RIGOL

User’s Guide

DS1000CA Series
Digital Oscilloscopes
DS1302CA, DS1202CA, DS1102CA, DS1072CA

Aug. 2011
RIGOL Technologies, Inc.
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Guaranty and Declaration

Copyright
© 2009 RIGOL Technologies, Inc. All Rights Reserved.

Trademark Information
RIGOL is registered trademark of RIGOL Technologies, Inc.

Publication Number
UGA03113-1110

Notices
 RIGOL products are protected by patent law in and outside of P.R.C..
 RIGOL Technologies, Inc. reserves the right to modify or change parts of or all
the specifications and pricing policies at company‟s sole decision.
 Information in this publication replaces all previously corresponding material.
 RIGOL shall not be liable for losses caused by either incidental or
consequential in connection with the furnishing, use or performance of this
manual as well as any information contained.
 Any part of this document is forbidden to copy or photocopy or rearrange
without prior written approval of RIGOL.

Product Certification
RIGOL guarantees this product conforms to the standards of national and industrial.
Meanwhile, the related standards conform to other ISO will get further. At present,
DS1000CA has passed CE, cTUVus and GOST certification.

Contact Us
If you have any problem or requirement when using our products, please contact
RIGOL Technologies, Inc. or your local distributors, or visit: www.rigol.com

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Safety Notices

Review the following safety precautions Observe All Terminal Ratings.

carefully before operating the To avoid fire or shock hazard, observe
instrument to avoid any personal all ratings and marks on the instrument.
injuries or damages to the instrument Follow the user‟s guide for further
and any products connected to it. To ratings information before making
avoid potential hazards use the connections to the instrument.
instrument as specified by this user‟s
guide only. Do Not Operate Without Covers.
Do not operate the instrument with
The instrument should be serviced covers or panels removed.
by qualified personnel only.
Use Proper Fuse.
To Avoid Fire or Personal Injury. Use the fuse of the type, voltage and
current ratings as specified for the
Use Proper Power Cord. instrument.
Use the power cord designed for the
instrument and authorized in your Avoid Circuit or Wire Exposure.
country only. Do not touch exposed connections and
components when power is on.
Ground The Instrument.
The oscilloscope is grounded through Do Not Operate With Suspected
the grounding conductor of the power Failures.
cord. To avoid electric shock the If suspected damage occurs with the
instrument grounding conductor(s) instrument, have it inspected by
must be grounded properly, before qualified service personnel before
making connections to the input or further operations.
output terminals of the instrument.
Provide Proper Ventilation.
Connect The Probe. Refer to the installation instructions for
The probes‟ ground terminals are at the proper ventilation of the instrument.
same voltage level of the instrument
ground. Do not connect the ground Do Not Operate in Wet Conditions
terminals to a high voltage. In order to avoid short circuiting to the

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interior of the device or electric shock, Definitions
please do not operate in a humid Measurement Category I is for
environment. measurements performed on circuits
not directly connected to MAINS.
Do Not Operate in an Explosive Examples are measurements on circuits
Atmosphere not derived from MAINS, and specially
In order to avoid damages to the device protected (internal) MAINS derived
or personal injuries, it is important to circuits. In the latter case, transient
operate the device away from an stresses are variable; for that reason,
explosive atmosphere. the transient withstand capability of the
equipment is made known to the user.
Keep Product Surfaces Clean and
Dry WARNING
To avoid the influence of dust and/or IEC Measurement Category I. The input
moisture in air, please keep the surface terminals may be connected to circuit
of device clean and dry. terminal in IEC Category I installations
for voltages up to 300 VAC. To avoid
The disturbance test of all the the danger of electric shock, do not
models meet the limit values of A connect the inputs to circuit‟s voltages
in the standard of EN 61326: above 300 VAC.
1997+A1+A2+A3, but can’t meet
the limit values of B. Transient overvoltage is also present on
circuits that are isolated from mains.
Measurement Category The DS1000CA series Digital
The DS1000CA series Digital Oscilloscopes is designed to safely
Oscilloscope is intended to be used for withstand occasional transient
measurements in Measurement overvoltage up to 500 Vpk. Do not use
Category I. this equipment to measure circuits
where transient overvoltage could
Measurement Category exceed this level.

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Safety Terms and Symbols

Terms in this Manual. These terms may appear in this manual:

WARNING
! Warning statements indicate the conditions or practices that could result in
injury or loss of life.

CAUTION
! Caution statements indicate the conditions or practices that could result in
damage to this product or other property.

Terms on the Product. These terms may appear on the product:

DANGER indicates an injury or hazard that may immediately happen.

WARNING indicates a potential injury or hazard that may immediately happen.
CAUTION indicates that a potential damage to the instrument or other property
might occur.

Symbols on the Product. These symbols may appear on the product:

!
Hazardous Refer to Protective Chassis Test
Voltage Instructions Earth Terminal Ground Grounding

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Instrument at a Glance

Four types of DS1000CA series digital oscilloscopes will be introduced in this book:
DS1072CA, DS1102CA, DS1202CA, DS1302CA

The instrument could help users to achieve high-quality measurement by excellent

performance, powerful functions and easy operation.

DS1000CA is designed for 2GSa/s maximum real-time sample rate, 50GSa/s

maximum equivalent sample rate, 300MHz maximum bandwidth and 20000wfms/s
waveform capture, which are used to capture rapidly changing waveforms fast and
accurately. Besides, abundant trigger, math and acquire functions enable it easy to
capture and analyze waveforms, also, AUTO button is available to display a signal
automatically. What‟s more, design of panels, LCD, interface and buttons are
friendly and clear, making operation more comfortable.

Main Features:

 Dual Channel, Bandwidth:

300MHz (DS1302CA)
200MHz (DS1202CA)
100MHz (DS1102CA
70MHz (DS1072CA)
 Color TFT LCD, 320× 234 pixels resolution.
 Plug and play USB storage.
 Adjustable waveform intensity, more effective waveform viewing.
 One-touch automatic setup, ease of use (AUTO).
 Supports waveforms, setups, bitmap and CSV format storage and reappearance
of waveforms and setups.
 Delayed Scan Function, easy to give attention to both details and overview of a
waveform.
 20 Automatic measurements.
 Automatic cursor tracking measurements.
 Waveform recorder, record and replay dynamic waveforms.
 User selectable fast offset calibration.
 Built-in FFT function, Frequency Counter.

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 Digital filters, includes LPF, HPF, BPF, BRF.
 Pass/Fail Function, optically isolated Pass/Fail output.
 Add, Subtract and Multiply Mathematic Functions.
 Advanced trigger types include: Edge, Video, Pulse width, Slope, Alternative.
 Adjustable trigger sensitivity.
 Multiple Language User Interface.
 Pop-up menu makes it easy to read and easy to use.
 Built-in Chinese and English help system.
 Easy-to-use file system supports Chinese & English characters file name input.

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Structure of This Document

Chpter 1 Quick Start

To introduce the panls and menus to help user to realize the base operations.

Chapter 2 Operating Your Oscilloscope

More details to help users to understand the functions and measurements of
instrument deeply.

Chapter 3 Application Examples

To show the measurement functions directly by application examples.

Chapter 4 Troubleshooting
Provide you troubleshooting to solve the problems during operating.

Chpter 5 Specifications
List common specifications and characteristics of DS1000CA series oscilloscope.

Chapter 6 Appendix
Information about accessories, warranties, services and supports and the like.

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Content

Guaranty and Declaration ....................................................................... I

Safety Notices ........................................................................................ II

Instrument at a Glance............................................................................. V

Chapter 1 Quick Start ........................................................................ 1-1

General Inspect .................................................................................... 1-2

Panels and User Interface ...................................................................... 1-3
Function Check ..................................................................................... 1-7
To Compensate Probes.......................................................................... 1-9
To Display a Signal Automatically ......................................................... 1-10
To Understand the Vertical System ....................................................... 1-11
To Understand the Horizontal System ................................................... 1-13
To Understand the Trigger System ....................................................... 1-15

Chapter 2 Operating Your Oscilloscope .............................................. 2-1

To Set Up the Vertical System ................................................................ 2-2

Channel Settings ............................................................................ 2-4
Math functions ............................................................................. 2-14
REF function ................................................................................ 2-18
To Set Up the Horizontal System .......................................................... 2-26
Delayed Scan ............................................................................... 2-28
X-Y Format .................................................................................. 2-29
To Set Up the Trigger System .............................................................. 2-30
Edge Trigger ................................................................................ 2-31
Pulse Width Trigger ...................................................................... 2-32
Video Trigger ............................................................................... 2-33
Slope Trigger ............................................................................... 2-36
Alternative Trigger ........................................................................ 2-38
Trigger Settings ............................................................................ 2-41
Trigger Holdoff ............................................................................. 2-42
To Set Up the Sampling System ........................................................... 2-46
To Set Up the Display System .............................................................. 2-50
To Store and Recall Waveforms or Setups ............................................. 2-53
To Set Up the Utility............................................................................ 2-60
I/O Setup .................................................................................... 2-62

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Language ..................................................................................... 2-63
Pass/Fail ...................................................................................... 2-64
Waveform Recorder ...................................................................... 2-68
Print Set ...................................................................................... 2-72
Self-Calibration ............................................................................. 2-73
Service ........................................................................................ 2-74
Preference ................................................................................... 2-75
To Measure Automatically .................................................................... 2-77
Automatic measurement of voltage parameters ............................... 2-81
Automatic measurement of time parameters.................................... 2-82
To Measure with Cursors...................................................................... 2-83
Manual Mode................................................................................ 2-84
Track Mode .................................................................................. 2-86
Auto Mode ................................................................................... 2-88
To Use Run Control Buttons ................................................................. 2-89

Chapter 3 Application & Examples ..................................................... 3-1

Example 1: Taking Simple Measurements ................................................3-1

Example 2: View a Signal Delay Caused by a Circuit..................................3-2
Example 3: Capture a Single-Shot Signal .................................................3-3
Example 4: To Reduce the Random Noise on a Signal ...............................3-4
Example 5: Making Cursor Measurements ................................................3-6
Example 6: The application of the X-Y operation ......................................3-8
Example 7: Triggering on a Video Signal ................................................ 3-10
Example 8: FFT Cursor Measurement .................................................... 3-12
Example 9: Pass/Fail Test .................................................................... 3-13

Chapter 4 Troubleshooting ................................................................ 4-1

Chapter 5 Specifications .................................................................... 5-1

Technical Specifications ...................................................................5-2

General Specifications .....................................................................5-6

Chapter 6 Appendix ........................................................................... 6-1

Appendix A: DS1000CA series Accessories ...............................................6-1

Appendix B: Warranty ............................................................................6-2
Appendix C: Maintenance .......................................................................6-3
Appendix D: Any Comment or Question? .................................................6-4

Index ...................................................................................................... 1

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Chapter 1 Quick Start

This chapter covers the following topics:

 General Inspect

 Panels and User Interface

 Function Check

 To Compensate Probes

 To Display a Signal Automatically

 To Understand the Vertical System

 To Understand the Horizontal System

 To Understand the Trigger System

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General Inspect

After receiving a new DS1000CA series oscilloscope, please inspect the instrument as
follows:

1. Inspect the shipping container for damage.

Keep the damaged shipping container or cushioning material until the contents
of the shipment have been checked for completeness and the instrument has
passed both electrical and mechanical test.

The consigner or carrier shall be liable for the damage to instrument resulting
from shipment, without free maintenance or replacement by RIGOL.

2. Inspect the instrument.

In case of any damage, or defect, or failure, notify your RIGOL Sales
Representative.

3. Check the accessories.

Accessories supplied with the instrument are listed in "Appendix A: DS1000CA
series Accessories" in this guide.
If the contents are incomplete or damaged, please notify your RIGOL Sales
Representative.

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Panels and User Interface

The first thing to do with a new oscilloscope is to know its panels. This chapter helps
to be familiar with the layout of the knobs and keys and how to use them. Read the
chapter carefully before further operations.

The Front Panel

The front panel is divided into “function menu”, “run control”, “trigger control”,
“horizontal control” and “vertical control” areas.

Thereinto, five grey menu buttons which lie beside LCD screen (defined No.1 to No.5)
are used to switch current menu options. Other function buttons are used to enable
the access to many measurement features associated with advanced functions,
mathematics, reference or to run control features. In addition, multi-function knob is
available to adjust waveform brightness or switch menus, but others are applied to
adjust offset, volts/div or s/div.

Power Switch Turn On/Off Multi-function Function Run Control

LCD Menu Knob Menu

Trigger Control

Horizontal Control
Vertical Control

Probe Compensator

USB Host MenuFigure 1-1 Analog Signal EXT TRIG

Buttons
Input Channels Channel

Figure 1-1
Front panel of DS1000CA series oscilloscope

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Interfaces:

USB Host: It is used to connect DS1000CA with external USB devices when the
oscilloscope is regarded as “Host Device”. For example, connect a USB flash device.
Signal Input: Two channels are provided: CH1 and CH2.
EXT TRIG Input: It is applied to input external trigger signal.

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The Rear Panel

Pass/Fail RS232 USB Device

Figure 1-2
Rear panel of DS1000CA series oscilloscope

Interfaces:

Pass/Fail: It is used to output the pass/fail test result.

RS232: To connect the oscilloscope with external devices by serial port.
USB Device: It is used to connect DS1000CA with external USB devices when the
oscilloscope is regarded as a “Slave Device”. For example, connect with PC for
remote control.

Notation definitions in this User’s Guide:

Throughout this manual, notation symbols of buttons and knobs are the same of
those on front-panel.
 A box around the name of the key denotes MENU function buttons on
front-panel, such as Measure.
 ( ) denotes the multi-function knob .
 denotes the two POSITION knobs.
 denotes the two SCALE knobs.
 denotes the LEVEL knob.
 The name with a drop shadow denotes the menu operating key, such as
Waveforms soft key in Storage menu.
 Use “→” to divide operation steps. Such as: Storage → Storage, indicates press
“Storage” button on the front panel, then press “Storage” menu.

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User’s Interface

Location of Waveform Trigger Point

Run Status Window in Memory in Memory

Status Bar
Trigger Point in
Waveform
Window

Channel 1

Menu

Channel 2

CH1 Volts/Div CH2 Volts/Div Timebase Trigger Offset

Figure 1-3 User‟s Interface

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Function Check

Perform this quick functional check to verify that the instrument is operating
correctly.

1. Turn on the instrument

Use the power cord designed for the oscilloscope to connect the instrument and
AC power which delivers 100 to 240 VACRMS, 45Hz to 440Hz. Press the power
switch to turn on the instruments, waiting until the display shows the waveform
window.

2. Recall factory setting

Press Storage → Storage → Factory → Load, to recall factory setting.

Power Switch Storage Button

Figure 1-4
Turn on the instrument

! WARNNING
To avoid electric shock, be sure the oscilloscope is properly grounded.

3. Input a signal to a channel of the oscilloscope

 Push BNC plug of probe into CH1 BNC connector, then twist the BNC cable to
right to lock the probe in place. Switch on the probe to 10X.

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Probe
compensator
connector

Ground pin

Figure 1-5 Probe connection Figure 1-6 Probe adjustment

 Press CH1 → Probe → 10X to set probe attenuation of the oscilloscope, so as

to make sure the measurement result is correct. (Default probe attenuation
scale is 1X.)
 Attach the probe tip to the Probe compensator connector and the reference
lead to the ground pin. Press AUTO, within a few seconds, a square wave will
display (approximately 1 kHz 3 V peak- to- peak).
 Push the OFF button or push the CH1 button again to turn off Channel 1.
Push the CH2 button to turn on channel 2, repeat steps above.

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To Compensate Probes

Perform this adjustment to match the characteristics of the probe and the channel
input. This should be performed whenever attaching a probe to any input channel
the first time.

1. From CH1 menu, set the Probe attenuation to 10X (press CH1 → Probe → 10X).
Set the switch to 10X on the probe and connect it to CH1 of the oscilloscope.
When using the probe hook-tip, inserting the tip onto the probe firmly to ensure
a proper connection.
2. Attach the probe tip to the Probe compensator connector and the reference lead
to the ground pin, Select CH1, and then press AUTO.
3. Check the shape of the displayed waveform.

Over compensated Correctly Compensated Under Compensated

Figure 1-9

Figure 1-7 Waveform compensation

4. If necessary, use a non-metallic tool to adjust the trimmer capacitor of the probe
for the flattest square wave being displayed on the oscilloscope.
5. Repeat if necessary.

WARNNING
! To avoid electric shock while using the probe, be sure the perfection of the
insulated cable, and do not touch the metallic portions of the probe head
while it is connected with a voltage source.

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To Display a Signal Automatically

The oscilloscope has an automated feature to display the input signal best-fit. The
input signal should be 50Hz or higher and a duty cycle is greater than 1%. Please
take the following steps:

1. Connect a signal to the oscilloscope input channel.

2. Press AUTO.

The oscilloscope will set up VERTICAL, HORIZONTAL and TRIGGER controls

automatically. You also could adjust the controls manually to get the best results if
necessary.

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To Understand the Vertical System

See figure 1-8 as below, the VERTICAL Control Area contains a series of buttons
and knobs, which are not only used to set CH1, CH2, math and reference waveform
functions, but also to adjust vertical position and “Volts/div”.

Figure 1-8 Vertical Control

1. Press CH1, CH2, MATH, REF, then the corresponding menu, sign, waveform and
volts/div state will appear on the screen. To turn off channels, please press OFF.

2. Set vertical position of waveform display by knob.

Turning the knob, a voltage value is displayed for a short time
indicating its value with respect to the ground reference located at the center of
the screen. Also notice that the ground symbol on the left side of the display
moves in conjunction with the knob.

Measurement hints

If the channel is DC coupled, measuring the DC component of the signal by

simply noting its distance from the ground symbol.
If the channel is AC coupled, the DC component of the signal is blocked,
allow you to use greater sensitivity to display the AC component of the
signal.

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Vertical offset back to 0 shortcut key

Turn the knob to change the vertical display position of

channel and press the knob to set the vertical display
position back to 0 as a shortcut key, this is especially helpful when the trace
position is far out of the screen and want it to get back to the screen center
immediately.

3. Set vertical “Volts/div” by knob.

Rotate to change “Volts/div”, the change will be displayed in real
time at the bottom of interface. Besides, the “Volts/div” contains two forms:
“Fine” and “Coarse”.

Coarse/Fine Shortcut key

The Coarse/Fine vertical control can be set by simply pressing the vertical
knob.

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To Understand the Horizontal System

See figure 1-9 as below, the HORIZONTAL Control Area contains a button and
two knobs, which are not only used to set up horizontal parameters and timebase,
but also to adjust horizontal position of waveforms.

Figure 1-9 Horizontal Control

1. The horizontal knob adjusts signal horizontal position on

waveform window.
Turning the horizontal knob, the waveform will move to left or
right and a sign at the left-bottom of the screen will vary to show the horizontal
position of the waveform.

Horizontal offset back to 0 shortcut key

Press the knob to set the horizontal offset to 0 as a shortcut

key, this is especially helpful when the trigger point is far out of the screen
and want it to get back to the screen center immediately.

2. Press MENU button to display “Time” menu, setting delayed state, time base
mode and trigger offset.

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Term Explanations

Trigger offset: Denotes the real position of the trigger point relative to the
midpoint of the memory. In this setting, the trigger position will be changed
horizontally when you turning the knob.

3. Set horizontal “s/div” by knob.

The horizontal knob changes the sweep speed in a 1-2-5 step
sequence, and displays the value in the status bar. The time base ranges of the
DS1000CA series is from 2ns/div* to 50s/div.

NOTE*: The speed of horizontal scan varies by different models.

Delayed Scan Shortcut key

To press the knob in the horizontal control area on the

front-panel is another way to enter or exit Delayed Scan mode.

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To Understand the Trigger System

See figure 1-10 below, the TRIGGER Control Area contains a knob and three
buttons, which are used to set trigger level, trigger parameters and force trigger.

Figure 1-10
Trigger Control

1. Set trigger level by knob.

A nacarat trigger line and trigger sign will move up and down when you turn the
knob, and they will disappear about 5 seconds after stop turning
knob. The trigger level value will change on the screen at the same time you turn
the trigger line.

Trigger Level to 0 Shortcut Key

Turn the knob to change the trigger level value and press the
knob to set trigger level back to 0 as a shortcut key.

2. Press MENU button in the Trigger control. A soft button menu appears on the
display showing the trigger setting choices as shown in Figure 1-11.

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· Press NO.1 menu button to choose Edge.

· Press NO.2 menu button to choose Source as CH1.

· Press NO.3 menu button to choose Slope as .

· Press NO.4 menu button to choose Sweep as Auto.

· Press NO.5 menu button to enter secondary menu of Set Up.

Figure 1-11

NOTE: The trigger mode, slope and source change in conjunction with the status bar
on the top-right of the screen.

3. Press 50%
The 50% button sets the trigger level to the center of the signal.

4. Press FORCE
Starts an acquisition regardless of an adequate trigger signal, usually used in
“Normal” or “Single” trigger mode. This button has no effect if the acquisition is
already stopped.

Local/Remote control

When the instrument is in remote mode, press FORCE to switch to local

mode.

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Chapter 2 Operating Your Oscilloscope

By now, a user should understand the VERTICAL, HORIZONTAL and TRIGGER

control systems and knows how to determine the system setup from the status bar
of a DS1000CA-series digital oscilloscope. This chapter will go through all groups of
front-panel buttons, knobs and menus; and further the knowledge of the operation
by hints in this guide. It is recommended to perform all of the following exercises to
get the most of the powerful measurement capabilities of the oscilloscope. If you
haven‟t know the operations above, please refers to chapter 1.

This chapter covers the following topics:

 To Set Up the Vertical System ( CH1, CH2, MATH, REF, OFF, Vertical
, Vertical )

 To Set Up the Horizontal System ( MENU, Horizontal , Horizontal

)

 To Set Up the Trigger System ( , MENU, 50%, FORCE)

 To Set Up the Sampling System (Acquire)

 To Set Up the Display System (Display)

 To Store and Recall Waveforms or Setups (Storage)

 To Set Up the Utility (Utility)

 To Measure Automatically (Measure)

 To Measure with Cursors (Cursor)

 To Use Run Control Buttons (AUTO, RUN/STOP)

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To Set Up the Vertical System

Two analog channels are provided by DS1000CA: CH1 and CH2. Press the
corresponding button on the front panel to turn the channels on/off. The backlight
indicates the channel is currently active. Press the button again to turn the channel
off. When channel is currently selected, press OFF will turn it off and the backlight
goes off.

Table 2-1 The Channels menu

Channel Mode Settings Status Indicator
ON CH1 (yellow letter)
Channel 1 (CH1) Selected CH1 (black letter)
OFF No indicator
ON CH2 (blue letter)
Channel 2 (CH2) Selected CH2 (black letter)
OFF No indicator
ON MATH (purple letter)
MATH Selected MATH（black letter）
OFF No indicator

All functions applied will base on operating the instrument with channels, so MATH
and REF can be regarded as relatively isolated channels.

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Knobs Explanations

Use the vertical controls to display signal waveforms by adjusting the vertical
and , and setting the input parameters.

1. Using vertical knob

The vertical control changes the vertical position of signal
waveforms in all channels (including MATH and REF). The resolution changes
according to the vertical level set. Pressing this knob will clear the channel offset
to zero.

2. Using vertical knob

The vertical control changes the vertical sensitivity of signal
waveforms in all channels (including MATH and REF). If the Volts/Div is set to
“Coarse”, the waveform scales in a 1-2-5 step sequence from 2 mV to 10 V. If the
Volts/Div is set to “Fine”, it scales to small steps between the coarse settings.

3. Channels would be adjustable by the vertical and only

when they are selected.

4. During the vertical positioning, a position message is displayed on the left

bottom of the screen, in the same color as the corresponding channel. The unit
is V (Volts).For instance: POS: 32.4mV Colours of words and channel waveform
are the same, the unit is V.

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Channel Settings

Each channel of DS1000CA has an operation menu and it will pop up after pressing
CH1 or CH2 button. Take CH1 as an example, the settings of all items in the menu
are shown in the table below.

Figure 2-1 Table 2-2 The Channel menu (Page 1/2)

Menu Settings Comments

AC Block the DC component of the
input Signal.
Coupling DC Pass both AC and DC components
of the input signal
GND Disconnect the input signal.
ON Limit the channel bandwidth to
BW Limit 20MHz to reduce display noise.
OFF Get full bandwidth.
1X
5X
10X Set this to match the probe
Probe 50X attenuation factor to make the
100X vertical scale readout correct.
500X
1000X
Digital filter Setup digital filter (See table 2-5).
Go to the next menu page (The
1/2 followings are the same, no more
explanation).

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Figure 2-2 Table 2-3 The Channel menu (Page 2/2)

Menu Settings Comments

Back to the previous menu page

2/2 (The followings are the same, no
more explanation).

Coarse Define a 1-2-5 sequence.

Volts/Div Fine To change the resolution to small
steps between the coarse settings.
ON Turn on the invert function.
Invert OFF Restore to original display of the
waveform.
V/ A/ W/ U Set “V”, “A”, “W” or “U” as the unit of
Unit
vertical channel.
50Ω* Press this key to select the input
Input
1MΩ resistance to 50Ω or 1MΩ.

NOTE*: This parameter is for DS1202CA and DS1302CA only.

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1. Channel coupling

To use CH 1 as an example, input a sine wave signal with DC shift.

Press CH1→Coupling→AC to set “AC” coupling. It will pass AC component

blocks the DC component of the input signal.

AC Coupling
Setup

AC Coupling
Status Symbol
Figure 2-3 AC coupling setting

Press CH1→Coupling→DC, to set “DC” coupling. It will pass both AC and DC

components of the input signal.

DC Coupling
Setup

DC Coupling
Status Symbol

Figure 2-4 DC coupling setting

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Press CH1→Coupling→GND, to set “GND” coupling, it disconnects the input

signal.

GND
Coupling
setup

GND Coupling
Status Symbol
Figure 2-5 GND coupling setting

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2. Set up the channel bandwidth limit

Take CH1 for an example, input a signal containing high frequency component.

Press CH1→BW Limit→OFF, to set up bandwidth limit to “OFF” status. The

oscilloscope is set to full bandwidth and passing the high frequency component
in the signal.

Turn Off the

BW Limit

Figure 2-6 Turn off the BW limit

Press CH1→BW Limit→ON, to set up bandwidth limit to “ON” status. It will

reject the frequency component higher than 20MHz.

20M BW Limit

Mark of
BW Limit

Figure 2-7 Turn on the BW limit

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3. Probe Attenuation Setting

The oscilloscope allows selecting the attenuation factor for the probe. The
attenuation factor changes the vertical scaling of the oscilloscope so that the
measurement results reflect the actual voltage levels at the probe tip.
To change (or check) the probe attenuation setting, press the CH1 or CH2
button (according to which channel in using). Toggle the Probe soft button to
match the attenuation factor of the probe.
This setting remains in effect until changed again.

Figure 2-8 show an example for using a 1000:1 probe and its attenuation factor.

Probe
Attenuation

Vertical
Volts/div

Figure 2-8 Setting probe attenuation

Table 2-4 Probe setting

Probe attenuation factors Corresponding settings
1:1 1X
5:1 5X
10:1 10X
50:1 50X
100:1 100X
500:1 500X
1000:1 1000X

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4. Digital Filter

Press CH1→Digital filter, display the digital filter menu.

Turn off
Digital Filter

Figure 2-9 Turn off digital filter

Turn on
Digital Filter

Mark of Digital Filter

Figure 2-10 Turn on digital filter

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Turn ( ) knob to set high and low limit of frequency.

Figure 2-11 Table 2-5 The Filter menu

Menu Settings Comments

Off Turn off the digital filter.

Digital Filter
On Turn on the digital filter.
Setup as LPF (Low Pass Filter).
Setup as HPF (High Pass Filter).
Filter Type
Setup as BPF (Band Pass Filter).
Setup as BRF (Band Reject Filter).

Upper limit <frequency Turn ( ) knob to set high limit.

upper limit>

Lower limit <frequency Turn ( ) knob to set low limit.

lower limit>
Back to higher level menu (The
followings are the same, no more
explanation).

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5. Volts/Div settings

The Volts/Div control has Coarse or Fine configuration. The Vertical

Sensitivity is 1mv/div ~10V/div.

Coarse: It is the default setting of Volts/Div in a 1-2-5 step sequence from

1mV/div, 2mV/div, 5mV/div, 10mV/div to10 V/div.

Fine: This setting changes the vertical scale to small steps between the coarse
settings. It will be helpful to adjust the waveform in smooth steps.

Fine
Adjustment

Fine Adjustment Data

Figure 2-12 Fine configurations

Coarse/Fine Shortcut key

To change Coarse/Fine setting, not only by menu but also by pressing

vertical knob.

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6. To invert a waveform

Invert turns the displayed waveform 180 degrees, as respect to the ground
level. When the oscilloscope is triggered on the inverted signal, the trigger is
also inverted. Figure 2-13 and 2-14 show the changes before after the inversion
respectively.

Invert Off

Figure 2-13
The waveform before inversion

Invert On

Figure 2-14
The waveform after inversion

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Math functions

The mathematic functions include “Add”, “Subtract”, “Multiply” and “FFT” for
Channel 1 and Channel 2. The mathematic result can be measured by the grid and
the cursor.

Press MATH button to enter “Math” menu, meanwhile, sign of math scale will appear
under the screen. See figure below, waveform of channel1 is marked yellow,
waveform of channel2 is marked blue, and waveform of channel1 adding channel2 is
marked purple.

MATH scale

Figure 2-15 The Math function

Figure 2-16 Table 2-6 The Math menu
Menu Settings Comments
A+B Add source A and source B.
A-B Subtract source B from source A.
Operation
A× B Multiply source B by source A.
FFT Fast Fourier Transform.
CH1
Source A Define CH1 or CH2 as source A.
CH2
CH1
Source B Define CH1 or CH2 as source B.
CH2
ON Invert the MATH waveform.
Invert
OFF Restore to original waveform display.

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1. FFT Analyse

The FFT (Fast Fourier Transform) process converts a time-domain signal into its
frequency components mathematically. FFT waveforms are useful in the
following applications:
 Measuring harmonic content and distortion in systems
 Characterizing noise in DC power supplies
 Analyzing vibration

Press MATH→Operate→FFT to enter FFT setting menu.

Figure 2-17 Table 2-7 The FFT menu

Menu Settings Comments

A+B Add source A to source B.
A-B Subtract source B from source A.
Operate
A× B Multiply source B by source A.
FFT Fast Fourier Transform.
CH1
Source Define CH1 or CH2 as FFT source.
CH2
Rectangle
Hanning
Window Select window for FFT.
Hamming
Blackman
Split Display FFT waveform on half screen.
Display
Full screen Display FFT waveform on full screen.
VRMS Set “VRMS” as vertical unit.
Scale
dBVRMS Set “dBVRMS” as vertical unit.

Key points for FFT

1. Signals that have a DC component or offset can cause incorrect FFT

waveform component magnitude values. To minimize the DC component,
choose AC Coupling on the source signal.
2. To reduce random noise and aliases components in repetitive or
single-shot events, set the oscilloscope acquisition mode to Average.
3. To display FFT waveforms with a large dynamic range, use the dBVRMS
scale. The dBVRMS scale displays component magnitudes using a log scale.

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2. Selecting an FFT Window

Oscilloscope record the FFT change for a limit time assume that YT waveform
repeat ceaselessly. If cycle is integer, YT waveform voltage is the same at
starting and ending point, and waveform is consecutive. Contrary, If cycle is
non-integer, the voltage is different at starting and ending point, leading to the
high frequency instantaneous intermit, which is called “leak”. To avoid leak,
multiply a window function to force the value is 0 at starting and ending point.

DS1000CA provides four FFT functions with different feature, which are need to
be selected according to measuring waveform.

Table 2-8 FFT Windows

Window Features Best for measuring

Best frequency resolution Transients or bursts, the signal levels
worst magnitude before and after the event are nearly
resolution. equal.
Rectangle This is essentially the Equal-amplitude sine waves with
same as no window. fixed frequencies.
Broadband random noise with a
relatively slow varying spectrum.
Better frequency, poorer Sine, periodic, and narrow-band
Hanning magnitude accuracy than random noise.
Rectangular.
Hamming has slightly Transients or bursts where the signal
better frequency levels before and after the events are
Hamming
resolution than Hanning. significantly different.
Best magnitude, worst Single frequency waveforms, to Find
Blackman
frequency resolution. higher order harmonics.

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Term Explanations

FFT Resolution: The quotient between sampling rate and number of FFT
points. With a fixed FFT points, the lower sampling rate results in better
resolution.

Nyquist Frequency
The highest frequency that any real-time digitizing oscilloscope can acquire
without aliasing. It‟s normally half of the sample rate. This frequency is called
the Nyquist frequency. Frequency above the Nyquist frequency will be under
sampled, causing a situation known as aliasing.

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REF function

Reference Waveforms are saved waveforms to be selected for display. The reference
function will be available after saving the selected waveform to non-volatile memory.

Press REF button to display the Reference waveform menu.

Figure 2-18 Table 2-9 REF menu when using internal memory

Menu Settings Comments

CH1 Select channel 1 as REF channel.
Source CH2 Select channel 2 as REF channel.
MATH/FFT Select MATH/FFT as REF channel.
Internal Select memory location in scope.
Location
External Select memory location out scope.
Save Save REF waveform
Go to import/export menu (see
Imp./Exp.
table 2-11).
Reset Reset REF waveform.

Figure 2-19 Table 2-10 REF menu when using external memory

Menu Settings Comments

CH1 Select channel 1 as REF channel.
Source CH2 Select channel 2 as REF channel.
MATH/FFT Select Math/FFT as REF channel.
Internal Select memory location in scope.
Location
External Select memory location out scope.
Save REF waveform to outer memory
Save
location.
Import Go to import menu (see table 2-15).
Reset Reset REF waveform.

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1. Import and Export

Switch in external memory and select Internal location.

Then, press REF →Imp. /Exp. and go to the following interface.

Figure 2-20 Import of export the figure

Figure 2-21 Table 2-11

(a) (a) The Imp. /Exp. Menu (Files)

Menu Settings Comments

Path
Set the explorer to Path, directories
Explorer Directories
or files.
Files
Export the REF file from internal
Export memory to export memory (see
table 2-12).
Import the REF file to internal
Import
memory.
Delete File Delete file.

Note: When the explorer is set to Path, Import and Delete File are grayed out
and disabled. When the explorer is set to Directories, the menu and
comments are as shown in the table below.

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(b) (b) The Imp. /Exp. Menu (Directories)

Menu Settings Comments

Path
Set the explorer to Path, directories
Explorer Directories
or files.
Files
Create a new folder under the
New Folder
current path.
Del Folder Delete the folder currently selected.

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2. Export

Switch in external memory and select Internal location.

Then, press REF→Imp. /Exp.→ Export and go to the following interface.

Figure 2-22 Figure export

Figure 2-23 Table 2-12 The Export menu

Menu Settings Comments
Move the cursor up.

Move the cursor down.

To delete chosen letter.

Save Execute the operation.

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3. Save to External memory

Switch in external memory and select External location.

Then, press REF→Save and go to the following interface.

Figure 2-24 Save the figure

Figure 2-25 Table 2-13 The Save menu

Menu Settings Comments

Path
Switch among Path, Directories
Explorer Directories
and Files.
Files
New File Set up new file in Path and Files.
(Folder) Set up new folder in Directories.
Delete File
Delete file (folder).
(Folder)

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4. New File (or New Folder)

Switch in external memory and select External location.

Then, press REF→Save→New File (or New Folder) and go to the following
interface.

File Name
Key In
Spell Key In
Character
Window

Switch Chinese/English Switch Capital On/Off

Figure 2-26 Input interface

Figure 2-27 Table 2-14 The New File menu

Menu Settings Comments
Move the cursor up.

Move the cursor down.

To delete chosen letter.

Save Execute the operation.

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5. Import
Switch in external memory and select External location.
Then, press REF→Import and go to the following interface.

Figure 2-28 Figure import

Figure 2-29 Table 2-15 The Import menu

Menu Settings Comments

Path
Switch among Path, Directories and
Explorer Directories
Files.
Files
Import the REF file into internal
Import
memory.

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6. Display a Reference Waveform

Figure 2-30 Reference waveform display

Operation Explanations:

1. Push REF button to show the reference waveform menu.

2. Press soft button 1 to select the reference channel: CH1, CH2, MATH/FFT.
3. Turn vertical and vertical to adjust the REF waveform
to a suitable position.
4. Press soft button No.2 to select the save location of REF waveform.
5. Press soft button No.3 to save the waveform as REF.

NOTE: The Reference function is not available in X-Y mode.

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To Set Up the Horizontal System

Press MENU button to enter the horizontal setting system.

Figure 2-31 Table 2-16 The Horizontal menu

Menu Settings Comments

ON Turn on Delayed Scan mode.
Delayed
OFF Turn off the Delayed Scan mode.
Y-T Y-axis indicates vertical voltage,
X-axis indicates horizontal time.
X-Y Y-axis indicates voltage of CH2,
Time Base
X-axis indicates voltage of CH1.
Roll[1] The waveform display updates
from right to left.
Trig-offset Reset Reset Adjust to the center.

NOTE:
[1] No trigger or horizontal offset control of waveforms is available
during Roll Mode, and it‟s only available when set to 500ms/div
or slower.

Term Explanations:

Slow Scan Mode: This mode is available when the horizontal time base is
set to 50ms or slower. In this mode, the oscilloscope acquires sufficient
data for the left part to the trigger point, then wait for trigger, when trigger
occurs, it continue to draw the rest part from the trigger point to the end of
the right side. When choosing this mode to view low frequency signals, it is
recommended that the channel coupling should be set as DC.

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The Horizontal Knobs

The horizontal controls change the horizontal scale and position of waveforms. The
horizontal center of the screen is the time reference for waveforms. Changing the
horizontal scale causes the waveform to expand or contract with respect to the
screen center. Horizontal position changes the displayed waveform position, relative
to the trigger point.

1. Horizontal knob is used to adjust the horizontal position of all

channel (include Math) waveforms. The resolution of this control varies with the
time base. Pressing this button clears trigger offset and moves the trigger point
to the horizontal center of the screen.

2. Horizontal is used to select the horizontal time/div (scale factor) for

the main or the Delayed Scan time base. When Delayed Scan is enabled, it
changes the width of the window zone by changing the Delayed Scan time base.

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Delayed Scan

The Delayed Scan is a magnified portion of the main waveform window. Use
Delayed Scan to locate and horizontally expand part of the main waveform window
for a more detailed (higher horizontal resolution) analysis of signal. The Delayed
Scan time base setting cannot be set slower than the Main time base setting.

Press MENU→Delayed→ON, or press horizontal knob to turn on delayed

scan function. See the waveform below.

Waveform to be Horizontally Expanded

Time Base of
Delayed Scan

Expanded Waveform in Horizontal Main Timebase

Figure 2-32 Delayed Scan windows

The screen splits into two parts as above:

The upper half displays the main waveform window and the lower half displays an
expanded portion of the main waveform window. This expanded portion of the main
window is called the Delayed Scan window. Two blocks shaded at the upper half; the
un-shaded portion is expanded in the lower half. The horizontal and
knobs control the size and position of the Delayed Scan. The value at
bottom of the screen is the main time base and the value on the center bottom
means the Delayed Scan time.

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X-Y Format

This format is useful for studying phase relationships between two signals.
CH1 in the horizontal axis(X) and CH2 in the vertical axis(Y), the oscilloscope uses a
none-trigger acquisition mode, data is displayed as dots.

Press MENU→Time Base→X-Y to enter X-Y mode.

Figure 2-33 X-Y display format

The oscilloscope could capture waveform with arbitrary sample rate in Y-T mode
(2GSa/s maximum for single channel, 1GSa/s maximum for double channels). While,
in X-Y mode, the sample rate is up to 500MSa/s. Generally, the sample rate is more
lower, the Lissajous graphics is more better.

The following modes or functions will not work in X-Y format.

 Cursor Measurements
 Pass/Fail Test
 REF or MATH Operations
 Delayed Scan Mode
 Vector Display Mode
 Horizontal knob
 Trigger Controls

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To Set Up the Trigger System

The trigger determines when the oscilloscope starts to acquire data and display a
waveform. When a trigger is set up properly, it can convert unstable displays or
blank screens into meaningful waveforms.

When the oscilloscope starts to acquire a waveform, it collects enough data so that it
can draw the waveform to the left of the trigger point. The oscilloscope continues to
acquire data while waiting for the trigger condition to occur. After it detects a trigger,
the oscilloscope continues to acquire enough data so that it can draw the waveform
to the right of the trigger point.

Press MENU button to enter trigger system setting interface.

Figure 2-34 Trigger controls

DS1000CA provides five trigger modes: Edge, Pulse, Slope, Video and Alternative.

Edge: An edge trigger occurs when the trigger input passes through a specified
voltage level in the specified slope direction.
Pulse: Use this trigger type to catch pulses with certain pulse width.
Video: Use video trigger on fields or lines for standard video signals.
Slope: The oscilloscope begins to trigger according to the signal rising or falling
speed.
Alternative: Trigger on non-synchronized signals.

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Edge Trigger

An edge trigger determines whether the oscilloscope finds the trigger point on the
rising or the falling edge of a signal. Select Edge trigger Mode to trigger on Rising
edge, falling edge or rising & falling edge.

Press MENU→Mode→Edge to enter the following menu.

Figure 2-35 Table 2-17 The Trigger menu

Menu Settings Comments

CH1 Select CH1 as trigger signal.
CH2 Select CH2 as trigger signal.
EXT Select EXT TRIG as trigger signal.
Source
EXT/5 Select attenuated EXT TRIG/5 as trigger
signal.
AC Line Select power line as trigger signal.
Trigger on rising edge.
Slope Trigger on falling edge.
Trigger on both ring & falling edge.
Auto Acquire waveform even no trigger occurred.
Normal Acquire waveform when trigger occurred.
Sweep
Single When trigger occurs, acquire one waveform
then stop.
Set up To go to Set Up menu, see table 2-32

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Pulse Width Trigger

Pulse trigger occurs according to the width of pulse. The abnormal signals can be
detected through setting up the pulse width condition.

Press MENU→Mode→Pulse to enter the following menu.

Figure 2-36 Table 2-18 The Trigger menu (Page 1/2)

Menu Settings Comments
CH1 Selects CH1 as trigger signal.
CH2 Select CH2 as trigger signal.
Source EXT Select EXT TRIG as trigger signal.
Select attenuated EXT TRIG/5 as trigger
EXT/5 signal.
Set Pulse width as “+pulse width less than”
Set Pulse width as “+pulse width more than”
Set Pulse width as “+pulse width equal to”
When
Set Pulse width as “-pulse width less than”
Set Pulse width as “-pulse width more than”
Set Pulse width as “-pulse width equal to”

Settings Set required pulse width.

<Width>

Figure 2-37 Table 2-19 The Trigger menu (Page 2/2)

Menu Settings Comments

Auto Acquire waveform even no trigger occurred.
Normal Acquire waveform when trigger occurred.
Sweep
Single When trigger occurs, acquire one waveform
and then stop.
Set Up To go to Set Up menu, see table 2-32.

NOTE: The adjustable range of Pulse width is 20ns to 10s. When the
condition is met, it will trigger and acquire the waveform.

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Video Trigger

Choose video trigger to trigger on fields or lines of NTSC, PAL, or SECAM standard
video signals. Trigger coupling preset to DC.

Press MENU→Mode→Video to enter the following menu.

Figure 2-38 Table 2-20 The Video Trigger menu (Page 1/2)

Menu Settings Comments

CH1 Selects CH1 as trigger source.
CH2 Select CH2 as trigger source.
Source EXT Select EXT TRIG as trigger source.
EXT/5 Select EXT TRIG/5 as trigger
source.
Trigger on the negative edge of the
Normal polarity sync pulse
Polarity
Inverted polarity Trigger on the positive edge of the
sync pulse
All Lines Trigger on all lines.
Line Num Trigger on an specified line.
Sync
Odd field Select to trigger on odd field.
Even field Select to trigger on even field.
Note*: normal polarity is applicable to signal with negative horizontal sync pulse;
inverted polarity is applicable to signal with positive horizontal sync pulse.

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Figure 2-39 Table 2-21 The Video Trigger menu (Page 2/2, when Sync is set as the
specified line)

Menu Settings Comments

Specify the line on which the oscilloscope
triggers. The range of the line number
Line Num <line
available is from 1 to 525 (NTSC) or from
number>
1 to 625 (PAL/SECAM).
PAL/SECM
Standard Select Video standard.
NTSC
Auto Force the oscilloscope to trigger in the
absence of trigger condition.
Normal Lets oscilloscope to trigger in the suitable
Sweep
trigger condition.
Single Lets oscilloscope to trigger one time in the
suitable trigger condition, and then stop.
Set Up To go to set up menu, see table 2-33.

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Figure 2-40 Table 2-22 The Video Trigger menu (When the Sync is set as All lines,
Odd field and Even field)

Menu Settings Comments

PAL/SECAM
Standard Select Video standard.
NTSC
Auto Force the oscilloscope to trigger in the
absence of trigger condition.
Normal Lets oscilloscope to trigger in the
Sweep
suitable trigger condition.
Single Lets oscilloscope to trigger one time in
the suitable trigger condition, then stop.
Set Up To go to set up menu, see table 2-33.

Select “Line Synchronization”: Select “Filed Synchronization”:

Figure 2-41 Figure 2-42

Video Trigger: Line Synchronization Video Trigger: Field Synchronization

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Slope Trigger

Slope trigger sets the oscilloscope as the positive/negative slope trigger within the
specified time.

Press MENU→Mode→Slope to enter the following menu.

Figure 2-43 Table 2-23 The Slope Trigger menu (Page 1/2)

Menu Settings Comments

CH1 Set channel 1 as trigger source.
CH2 Set channel 2 as trigger source.
Source
EXT Set EXT. channel as trigger source.
EXT/5 Set EXT/5 as trigger source.
Set slope condition as “+slope more than”
Set slope condition as “+slope less than”
Set slope condition as “+slope equal to”
When
Set slope condition as “-slope more than”
Set slope condition as “-slope less than”
Set slope condition as “-slope equal to”

Time Set slope time.

<Time Set>

Figure 2-44 Table 2-24 The Slope Trigger menu (Page2/2)

Menu Settings Comments

Select the level that can be adjusted by

Vertical
.

Auto Force the oscilloscope to trigger in the

absence of trigger condition.
Normal Lets oscilloscope to trigger in the suitable
Sweep
trigger condition.
Single Lets oscilloscope to trigger one time in the
suitable trigger condition, then stop.
Set Up To go to set up menu. See Table 2-32.

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NOTE: Slope time can be set from 20ns to 10s. When a signal meets the trigger
condition, scope will execute the acquisition. You can adjust LEVEL A/ LEVEL B or
both simultaneous by turning the knob.

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Alternative Trigger

When alternative trigger is on, the trigger sources come from two vertical channels.
This mode can be used to observe two non-related signals. You can choose two
different trigger modes for the two vertical channels. The options are as follows:
Edge, Pulse, Slope and video. The info of the trigger level of the two channels will be
displayed on the upper-right of the screen.

Press MENU→Mode→Alternative to enter the following menu.

Figure 2-45 Table 2-25 The Alternative menu (Trigger Type: Edge)

Menu Settings Comments

CH1 Set trigger mode for Channel 1.
Select
CH2 Set trigger mode for Channel 2.

Type Edge Set Edge Trigger as the trigger type.

Trigger on rising edge.

Slope Trigger on falling edge.
Trigger on both ring & falling edge.
Set Up To go to set up menu. See Table 2-32.

Figure 2-46 Table 2-26 The Alternative menu (Trigger Type: Pulse Page 1/2)

Menu Settings Comments

CH1 Set trigger mode for Channel 1.
Select
CH2 Set trigger mode for Channel 2.

Type Pulse Set Pulse Trigger for the channel.

Set Pulse width as “+pulse width less than”

Set Pulse width as “+pulse width more than”
Set Pulse width as “+pulse width equal to”
When
Set Pulse width as “-pulse width less than”
Set Pulse width as “-pulse width more than”
Set Pulse width as “-pulse width equal to”

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Figure 2-47 Table 2-27 The Alternative menu (Trigger Type: Pulse Page 2/2)

Men
Settings Comments
u

Setting Set the width of the pulse.

<pulse width>
Set Up To go to set up menu. See Table 2-32.

Figure 2-48 Table 2-28 The Alternative menu (Trigger Type: Slope Page 1/2)

Menu Settings Comments

CH1 Set trigger mode for Channel 1.
Select
CH2 Set trigger mode for Channel 2.

Type Slope Set Slope Trigger for the vertical channel.

Set slope condition as “+slope more than”

Set slope condition as “+slope less than”
Set slope condition as “+slope equal to”
When
Set slope condition as “-slope more than”
Set slope condition as “-slope less than”
Set slope condition as “-slope equal to”

Figure 2-49 Table 2-29 The Alternative menu (Trigger Type: Slope Page 2/2)

Menu Settings Comments

Time Set slope time.

<Time Set >

Select the level to be adjusted by

Vertical
.

To go to set up menu. See Table 2-32

Set Up
and table 2-33.

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Figure 2-50 Table 2-30 The Alternative menu (Trigger Type: Video Page 1/2)

Menu Settings Comments

CH1 Set trigger mode for CH1.
Select
CH2 Set trigger mode for CH2.

Type Video Video Trigger for the channel.

Trigger on the negative edge
Normal polarity of the sync pulse
Polarity
Inverted polarity Trigger on the positive edge of
the sync pulse

Note*: normal polarity is applicable to signal with negative horizontal sync pulse;
inverted polarity is applicable to signal with positive horizontal sync pulse.

Figure 2-51 Table 2-31 The Alternative menu (Trigger Mode: Video Page 2/2)

Menu Settings Comments

ALL lines Trigger on all lines.
Line Num Trigger on an specified line.
Sync
Odd field Select to trigger on odd field or even
Even field field.
Select the specified line number for
Line Num
<Lines Set > sync.
PAL/SECM
Standard Select Video standard.
NTSC
To go to set up menu. See Table
Set Up
2-33.

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Trigger Settings

Set up different trigger settings according to different trigger modes. When in the
mode of Edge and Pulse, only Holdoff is adjustable. When source is non-digital
channel and in slope trigger, only trigger coupling, trigger sensitivity and Holdoff can
be set. For video trigger, Sensitivity and Holdoff can be set.

Figure 2-52 Table 2-32 The Trigger Set Up menu (Settings for trigger coupling,
trigger sensitivity and holdoff)

Menu Settings Comments

DC Allow all signals pass.
AC Block DC signals.
Coupling HF Reject Reject high frequency signals.
LF Reject Reject DC and low frequency
signals.
Set trigger sensitivity and the
Sensitivity range is from 0.10div to
<Sensitivity Setting>
1.00div.
Set time slot before another
Holdoff trigger event and the range is
<Holdoff Setting>
from 500ns to 1.50s.
Holdoff Reset Reset Holdoff time to 500ns.
Figure 2-53
Table 2-33 The Trigger Set Up menu (Settings for sensitivity and
holdoff)
Menu Settings Comments

Sensitivity Set trigger sensitivity.

<Sensitivity Setting>

Set time slot before another

Holdoff
<Holdoff Setting> trigger event.

Holdoff Reset Reset Holdoff time to 500ns.

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Trigger Holdoff

Use trigger Holdoff to stabilize a complex waveform, such as a pulse range. Holdoff
time is the oscilloscope‟s waiting period before starting a new trigger. During Holdoff,
oscilloscope will not trigger until Holdoff ends. For instance: To trigger on the first
pulse on a group of them, users can set the holdoff time to Pulse cluster width.

Trigger Position

Time of Holdoff

Figure 2-54 Trigger Holdoff

Operation Explanations:
1 Press the trigger MENU button to display the Menu.
2 Press Set Up key to display trigger set up menu.
3 Turn the multi function knob ( ) to change Holdoff time until waveform is
stable.
4 Pushing Trigger Hold off reset to reset the Holdoff time to its default value.

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Trigger Terms Explanation

1. Trigger Source:
Trigger occurs from several sources: Input channels (CH1 and CH2), AC Line,
Ext, Ext/5.

 Input Channels:
It is the most commonly used trigger source. The channel works when selected
as a trigger source whatever displayed.

 Ext Trig:
The instrument can be triggered from a third source while acquiring data from
CH1 and CH2. For example, to trigger from an external clock or with a signal
from another part of the test circuit. The Ext, Ext/5 trigger sources use an
external trigger signal connected to the EXT TRIG connector. Ext uses the signal
directly; it has a trigger level range of +1.6 V to -1.6 V. The EXT/5 trigger source
attenuates the signal by 5X, which extends the trigger level range to +8 V to -8
V allowing the oscilloscope to trigger on a larger signal.

 AC Line:
AC power can be used to display signals related to the power line frequency,
such as lighting equipment and power supply devices. The oscilloscope gets
triggered on its AC power input, an AC trigger signal is not required.

2. Sweep Mode:
The sweep mode determines how the oscilloscope behaves in the absence of a
trigger event. The oscilloscope provides three trigger modes: Auto, Normal, and
Single.

 Auto:
This sweep mode allows the oscilloscope to acquire waveforms even when it
does not detect a trigger condition. If no trigger condition occurs while the
oscilloscope is waiting for a specific period (as determined by the time-base
setting), it will force itself to trigger.

When forcing invalid triggers, the oscilloscope cannot synchronize the

waveform, and the waveform seems to roll across the display. If valid triggers

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occur, the display becomes stable on the screen.
Any factor results in the un-stability of waveforms can be detected by Auto
Trigger, such as the output of Power supply.
NOTE: When horizontal control is set under 50 ms/div, Auto mode allows the
oscilloscope not to capture trigger signal.

 Normal:
The Normal mode allows the oscilloscope to acquire a waveform only when it is
triggered. If no trigger occurs, the oscilloscope keeps waiting, and the previous
waveform, if any, will remain on the display.

 Single:
In Single mode, after pressing the RUN/STOP key, the oscilloscope waits for
trigger. While the trigger occurs, the oscilloscope acquires one waveform then
stop.

3. Coupling:
Trigger coupling determines which signal component passing to the trigger circuit.
Coupling types include AC, DC, LF Reject and HF Reject.

 AC: AC coupling blocks DC components.

 DC: DC coupling passes both AC and DC components.
 LF Reject: LF Reject coupling blocks DC component, and attenuates all signal
with a frequency lower than 8 kHz.
 HF Reject: HF Reject coupling attenuates all signals with a frequency higher
than 150 kHz.

4. Pre-trigger/delayed trigger:
The data collected before and after trigger.
The trigger position is typically set at the horizontal center of the screen. In the
full-screen display the 6div data of pre-trigger and delayed trigger can be
surveyed. More data (14div) of pre-trigger and 1s delayed trigger can be
surveyed by adjusting the horizontal knob.
This feature is very useful to study the events that led up to the trigger point.

Everything to the right of the trigger point is called post-trigger information. The
delay range (pre-trigger and post-trigger information) depends on the sweep
speed selected.

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5. Adjustable trigger sensitivity:

To avoid the influence of noise from the physical world, and get the stable trigger,
the trigger circuit has adopted Stickiness. In DS1000CA series, the stickiness is
adjustable from 0.1div-1.0div, which means when it sets to 1.0div, the trigger
circuit will not affect any signal with peak-peak amplitude less than 1.0div, so as
to avoid the influence of the noise.

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To Set Up the Sampling System

Figure 2-55 shows the menu button for acquire system on the front panel.
Acquire Setup Button

Figure 2-55 Acquire button

Press Acquire button, the interface menu shows as follows:

Figure 2-56 Table 2-34 The Acquire menu

Menu Settings Comments

Normal Normal Acquisition mode.
Acquisition Average Average Acquisition mode.
Peak Detect Peak Detect Acquisition mode.
Step by 2 N times the power. Set
Averages[1] 2 to 256
average times from 2 to 256.
Real-Time Real-time sampling mode.
Sampling
Equ-Time Equivalent sampling mode.
ON Set the insert mode is Sinx or
Sinx/x[2]
OFF Line.
Sa Rate[3] Display sampling rate.

NOTES:
[1] This function appears when acquisition as “Average”.
[2] This function appears when sampling as “Real-Time”.
[3] Sample rate of CH1 and CH2 will be displayed respectively in alternative trigger
mode.

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The waveform displayed on the screen will change in conjunction with the setting of
Acquire menu.

 To reduce the displayed random noise, select the Average Acquisition. This
mode would make the screen refresh slower.
 To Avoid signal aliasing, select Peak Detect Acquisition.
 Select Real-time acquisition to observe the single-shot or pulse signals.
 Select Equ-Time to observe high frequency repetitive signals.

Figure 2-57
Signal that contains noise, and without average sampling

Figure 2-58
Display signal after average sampling

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Figure 2-59
Adopt Normal acquisition

Figure 2-60
Adopt peak detect acquisition, signal contains envelope

Key points

Stop Acquisition: When the scope is acquiring waveforms, the

waveforms is in a live status; when acquisition is stopped, frozen waveform
will be displayed, the position and scale can still be adjusted by vertical
control and horizontal control.

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Term Explanations

Real-time Sampling: DS1000CA has Real-time sampling rate up to

2GSa/s. At the time base 20ns or faster, the oscilloscopes use the sine(x)/x
interpolation to expand the horizontal time base.

Equivalent sampling: Known as Repetitive sampling to get up to 20ps of

horizontal resolution (equivalent 50Gsa/s). This mode is good for observing
repetitive signals, and it is not recommended for single-shot or pulse.

Normal Acquisition: Oscilloscope acquires signal by equal time interval.

Average Acquisition: Apply averaging to your signal to remove

uncorrelated noise and improve measurement accuracy. Reduces random
or uncorrelated noise in the signal display. The averaged waveform is a
running average over a specified number of acquisitions from 2 to 256.

Peak Detect: Peak Detect mode captures the maximum and minimum
values of a signal. Finds highest and lowest record points over many
acquisitions.

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To Set Up the Display System

Figure 2-61 shows the menu button for the display system on the front panel.

Display Setup Button

Figure 2-61 Display button

Press the Display button, the interface menu for settings shows as follows.

Figure 2-62 Table 2-35 The Display menu (Page 1/3)

Menu Setting Comments

Vectors Display waveforms as vectors.

Type
Dots Display waveforms as dots.
Clear all existing waveforms from
Clear
screen.
Turn off the persistence function.
OFF
Persist The sample points remain displayed
Infinite
until turn the persistence “OFF”.
Set up waveform intensity
Intensity
<percentage> (0%~100%).

Key points

Display type: Display type includes Vector and Dot. In vectors type,
oscilloscope connects dots through digital interpolation including both linearity
and sin(x)/x. Sin(x)/x interpolation is suitable for Real-time sampling and will
be more effective at 50ns or faster time base.

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Figure 2-63 Table 2-36 The Display menu (Page 2/3)

Menu Settings Comments

Normal The waveform is displayed at the
same intensity.
Function
Intensity The intensity of waveforms is
connecting to probability.
Display grids and coordinates on the
screen.
Grid
Turn off the grids.
Turn off the grids and coordinates.
1s
2s
Set the time before menu fades away.
Menu 5s
The menu will be hidden after the set
Display 10s
time of last button pressing.
20s
Infinite

Figure 2-64 Table 2-37 The Display menu (Page 3/3)

Menu Settings Comments

Brightness Set up grid brightness.

<percentage>
Normal Set to normal mode.
Screen
Inverted Set to invert color display mode.

Term Explanations

Refresh rate: It is an important performance of digital oscilloscopes. It means

the number of display refreshing per second and it will affect the ability to
observe signal.

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Adjusting waveform intensity

Default setup of multi-function knob ( ) is adjusting waveform intensity.

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To Store and Recall Waveforms or Setups

Figure 2-65 shows the menu button for the storage system on the front panel.

Storage Setup Button

Figure 2-65 Storage button

Press the Storage button, the interface menu for settings shows as follows.

Figure 2-66 Table 2-38 The Storage menu (Waveform or Setups storage)

Menu Settings Comments

[2]
Waveform Store or recall waveform.
Setups Store or recall instrument setups.
Storage[1] Bit map Create or delete bit map files.
CSV Create or delete CSV files.
Factory Recall factory setups.
Go to menu for internal memory
Internal
operation (see Table 2-42).
Go to menu for external memory
External
operation (see Table 2-43).
Go to disk manage menu (see
Disk Mana.
Table 2-44).

NOTES:
[1] The waveform and setups files in internal memory can be saved, loaded and
deleted. While, the waveform, setups, bit map and CSV files in external memory
can be created and deleted. To restore the factory settings, please select
“Factory”.
[2] Both waveforms and status settings could be saved in “Waveform Storage”.

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Figure 2-67 Table 2-39 The Storage menu (Bit Map storage)

Menu Settings Comments

Storage Bit map Create or delete bit map files.

Save the current oscilloscope
On
Para Save settings in different format with the
Off
same file name.
Go to menu for external memory
External
operation (see Table 2-43).
Go to disk manage menu (see Table
Disk Mana.
2-44).

Figure 2-68 Table 2-40 The Storage menu (CSV storage)

Menu Settings Comments

Storage CSV Create or delete CSV files.

Displayed Save currently displayed waveform

Data data to CSV file.
Depth Maximum Save the whole waveform data in
memory to CSV file.
Save the current oscilloscope
On
Para Save settings in different format with the
Off
same file name.
Go to menu for external memory
External
operation (see Table 2-43).
Go to disk manage menu (see Table
Disk Mana.
2-44).

Figure 2-69 Table 2-41 The Storage menu (Factory storage)

Menu Settings Comments

Storage Factory Recall factory setups.

Load Recall factory setups or files.

Go to disk manage menu (see Table
Disk Mana.
2-44).

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Internal Memory

Press Storage→Internal to go to the following menu.

Figure 2-70 Table 2-42 The Internal Memory menu

Menu Settings Comments

Int_00 (S) Set up the location of files in
Int_01 (S) internal memory among Int_00 to
Internal . Int_09. Thereinto, S in brackets
. indicates the location has storage
Int_09 (N) file, N indicates has not.
Recall waveform files and setup
Load files from the internal memory
location.
Save waveform files and setup
Save files to the internal memory
location.
Delete File Delete the files

NOTE: To ensure the setups being saved properly, only after the settings are
changed for more than 5 seconds can the user turn off the instrument. The
oscilloscope can store 10 settings permanently and can restore at anytime.

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External Memory

Switch in external memory, press Storage→ External to go to the following menu.

Current
Path

Back to
Previous
Directory
Files
Current
Directory

File Information

Figure 2-71 File system

Figure 2-72 Table 2-43 The External Memory menu

Menu Settings Comments

Path
Explorer Directory Switch among Path, Directory and File.
File
New File
To create new file or folder.
(Folder)
Delete
Delete file (Folder).
File
(Folder) Recall waveform and setup from USB
Load
storage device.

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Disk Management

Press Storage→Disk Mana. to go to the following menu.

Figure 2-73 Table 2-44 The Disk Management menu (Page 1/2)

Menu Settings Comments

Path
Switch among Path, Directory and
Explorer Directory
File.
File
To create new folder (same as new
New folder
files).
Delete File Delete file.

Recall waveform, setup, recorded

Load
waveform, Pass/Fail file.

Figure 2-74 Table 2-45 The Disk Management menu (Page 2/2)

Menu Settings Comments

Rename To rename a file (see Table 2-46).

Disk info Display disk information.

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1. Disk Information

Press Storage →Disk Mana →Diskinfo to go to the disk information interface.

Figure 2-75 Disk information interface

2. Rename

Press Storage→Disk Mana.→Rename to go to the following interface.

Figure 2-76
Rename the file

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Figure 2-77 Table 2-46 The Rename menu

Menu Settings Comments

To move the cursor up.

To move the cursor down.

To delete chosen letter.

OK Rename the file.

Key point

Factory: The oscilloscope has default settings and can be recalled at

anytime by user.

Memory location: Specify the memory location to save/recall the

waveforms and setups.

Load: Recall saved waveforms, setups and default settings.

Save: Save waveforms and setups.

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To Set Up the Utility

Figure 2-78 shows the menu button for the Utility on the front panel.

System Function Setup Button

Figure 2-78 Utility button

Press the Utility button to show the menu of the settings in the Utility system.

Figure 2-79 Table 2-47 The Utility menu (Page 1/3)

Menu Setting Comments

I/O setting Setup I/O configuration.
(ON)
Sound Turn beeper sound on/off.
(OFF)
OFF Turn off Frequency Counter.
Counter
ON Turn on Frequency Counter.
简体中文
繁体中文
한국어
日本語
Select languages.
Language English
Deutsch
Français
Português
Русский
Espaňol

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Figure 2-80 Table 2-48 The Utility menu (Page 2/3)

Menu Settings Comments

Pass/Fail Setup Pass/Fail test.

Record Setup Waveform Recorder.

Print set Setup printing.

Figure 2-81 Table 2-49 The Utility menu (3/3)

Menu Settings Comments

Self-Cal Execute Self-calibration.

Service Go to service menu.

Preference Go to preference menu.

Term Explanations:

Self-Cal: Oscilloscope will calibrate parameter of vertical system (CH1,

CH2, and Ext), horizontal system and trigger system.

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I/O Setup

Press Utility → I/O setting to go to the following menu.

Figure 2-82 Table 2-50 The I/O Setup menu

Menu Display Comments

300
.
RS-232 Set RS-232 baud rate as 300, 2400,
.
Baud 4800, 9600, 19200 or 38400.

38400

GPIB# 0 to 30 Set the GPIB address.

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Language

The DS1000CA series oscilloscopes have multi-language user menu, choose as your
desire.

Press Utility→Language to select the language.

Figure 2-83 Language interface

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Pass/Fail

The Pass/Fail function monitors changes of signals and output pass or fail signals by
comparing the input signal is within the pre-defined mask. The testing results not
only can be displayed on screen or output by isolated pass/fail port but also can be
alarmed if turn on system sound.

Press Utility→Pass/Fail to go to the following menu.

Figure 2-84 Table 2-51 The Pass/Fail menu (Page 1/2)

Menu Setting Comments

ON Turn on Pass/Fail test.
Enable Test
OFF Turn off Pass/Fail test.
CH1 Select Pass/Fail test on CH1.
Source
CH2 Select Pass/Fail test on CH2.
(RUN)
Pass/Fail test stopped, press to run.
Operate
■ (STOP) Pass/Fail test running, press to stop.

ON
Turn on Pass/Fail information display.
Msg display
Turn off Pass/Fail information display.
OFF

Figure 2-85 Table 2-52 The Pass/Fail menu (Page 2/2)

Menu Settings Comments

Fail Output when Fail condition detected.
Fail + [1]
Output and beep when Fail condition
detected.
Output
Pass Output when Pass condition detected.
Pass + [1]
Output and beep when Pass condition
detected.
Stop ON Stop test when output occur.
on Output OFF Continue test when output occur.
Mask Go to mask setting menu.
Setting
Note: [1] Only available when sound is enabled.

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1. Mask Setting

Press Utility→Pass/Fail→Mask Setting to go to the following menu.

Figure 2-86 Table 2-53 The Mask setting menu (Page 1/2)

Menu Settings Comments

Set horizontal clearance to the
X Mask
<x div> waveform (0.04div-4.00div).
Set vertical clearance to the waveform
Y Mask
<y div> (0.04div-4.00div).
Create Create a test mask according to the
Mask above clearance.
Internal Set the memory location of the mask
Location
External files.

Figure 2-87 Table 2-54 The Mask setting menu (Page 2/2)
When the save as internal memory
Menu Settings Comments
Store created test mask into internal
Save
memory.
Recall mask setting file from internal
Load
memory.
Go to import/export menu (same as
Imp./Exp.
REF import/export menu.).

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Figure 2-88 Table 2-55 The Mask setting menu (Page 2/2)
When the save as external memory
Menu Settings Comments
Go to save menu (same as REF save
Save
menu).
Load Go to load menu (see Table 2-56).
Go to import menu. (The same as REF
Import
import menu).

2. Mask Setting

Press Utility→Pass/Fail→Mask Setting→Load to go to the following menu.

Figure 2-89 Table 2-56 The Load menu

Menu Settings Comments

Path
Switch among Path, Directory and
Explorer Directory
File.
File
Load Recall the specified file.

NOTE: Pass/Fail function is unavailable in X-Y mode.

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3. Pass/Fail connection

The Pass/Fail connection has an optically isolated output. It needs to connect to

another circuit to fulfill the function.

Before connecting to an external circuit, make sure the maximum

voltage/current does not exceed the internal photo MOS relay‟s rating,
400V/100mA. DS1000CA series adopts the technique of Optical Isolation, and
the output device has no polarity and can be used in any circuit within the
ratings.

Figure 2-90
Schematic Diagram of Pass/Fail output

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Waveform Recorder

Waveform recorder records input waveforms from CH1 and CH2, with a maximum
record length of 1000 frames. This performance can also be activated by the
Pass/Fail test output, which makes this function especially useful to capture
abnormal signals in long term without keeping an eye watching it. This function
contains four modes: OFF, Record, Play back and Storage. More details about the
function please refer to the following introduction.

1. OFF: It will close all record functions.

2. Record: To record waveform by selected time interval till the last frame.

Press Utility→Record→Mode→Record to go to the following menu

Figure 2-91 Table 2-57 The Record menu (Page 1/2)

Menu Settings Comments

OFF Turn off all recorder functions.
Record Select record mode.
Mode
Play back Select play back mode.
Storage Select storage mode.
CH1
Source CH2 Select record source channel.
P/F-OUT

End Frame Set number of record frames.

<1-1000>
(Run) Record stopped, press to Start
Operate recording.
(Stop) Press to stop recording.

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Figure 2-92 Table 2-58 The Record menu (Page 2/2)

Menu Settings Comments

Set time interval between
Interval
<1.00ms-1000s> record frames.

3. Play back: Play back the recorded waveforms.

Figure 2-93 Table 2-59 The Play Back menu (Page 1/2)

Menu Settings Comments

(Run) Play stopped, press to Start
Operate playback.
(Stop) Press to stop playing.
Set repeat play mode.
Play mode
Set single time play mode.

Interval Set up interval.

<1.00ms-20s>

Figure 2-94 Table 2-60 The Play Back menu (Page 2/2)

Menu Settings Comments

Start Frame Set start frame.

<1-1000>
Current
Select current frame to be played.
Frame <1-1000>

End Frame Set End frame.

<1-1000>

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Key Points

The RUN/STOP button can also replay or continue the waveform display.

4. Storage: Store recorded waveforms to non-volatile memory according to the

setup frames.

Figure 2-95 Table 2-61 The Storage menu (Page 1/2)

Menu Settings Comments

Start Frame Set first frame to be saved.

<1-1000>

End Frame Set last frame to be saved.

<1-1000>
Internal
Location Set up Store location.
external

Figure 2-96 Table 2-62 The Storage menu when the save to Internal memory
(Page 2/2)
Menu Settings Comments
Save recorded waveform to internal
Save
memory location.
Recall recorded waveform from
Load
internal memory location.
Go to import/export menu (Same as
Imp./Exp.
REF import/export menu).

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Figure 2-97 Table 2-63 The Storage menu when the save as external memory
(Page 2/2)
Menu Settings Comments
Go to save menu (same as REF save
Save
menu).
Load Go to load menu (see Table 2-56).
Go to import menu. (Same as REF
Import
import menu).

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Print Set

DS1000CA series oscilloscopes support external printers.

Press Utility→ Print set to go to the following menu.

Figure 2-98 Table 2-64 The Print Set menu

Menu Settings Comments

Print Execute print function.
ON Invert the color for print.
Inverted
OFF Print original color.
Gray scale
Palette Set up print color.
Color

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Self-Calibration

The Self-Calibration adjusts the internal circuitry to get the best accuracy. Use these
functions to calibrate the vertical and horizontal systems. For maximum accuracy at
any time, run this calibration if the ambient temperature changes by 5℃ or more.

Before running this procedure, make sure that disconnect any probes or cables from
all channel inputs, otherwise failure or damage to the oscilloscope may occur. Then,
press Utility→ Self-Cal.

Figure 2-99 The Self-Calibration menu

NOTE: The oscilloscope must have been working or warm-up at least 30 minutes
before running self-calibration to get best accuracy.

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Service

Press Utility→Service to go to the following menu.

Figure 2-100 Table 2-65 The Service menu

Menu Settings
System Info Press to display system information.
Color Test Press to run color test.

1. System Information
Press Utility→Service→System Info to display the information of the
oscilloscope. Product Model, Serial No. Software version and Installed module
of the oscilloscope. Follow the prompting message “<<Press „RUN/STOP‟ Key to
Exit the Test>>" to exit this interface.

2. Color Test
Select Color Test to enter the color test screen, the hue, saturation, brightness,
or red, green and blue components can be adjusted by turning the ( ) knob,
confirm selection by pushing the ( ) knob.

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Preference

Press Utility→Preference to go to the following menu

Figure 2-101 Table 2-66 The Preference menu (Page 1/2)

Menu Display Comments

1 min
.
Screen saver . Set up screen saver timer.
5 hour
OFF
Ground Set up waveform vertical expand
Expand Refer.
Center reference.
Set the Screen waveforms persist
Screen Persist or display the last sampling
waveforms in stopping moment.
Classical
Modern
Skin Set up skin style.
Tradition
Succinct

Figure 2-102 Table 2-67 The Preference menu (Page 2/2)

Menu Display Comments

Set up sticky state of CH1, CH2,
Sticky key
MATH, REF, Trig. Lev. and Trig. Pos.
Command RIGOL or TEK

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Key Points

Screen saver: If oscilloscope is free for a pointed time, screen saver

function can be used. This function extends the life of LCD backlighting
system.

Expand reference: When changing the volts/div. for channels, the signal
expands or compresses around the signal ground level, or the center of the
screen. When Center is selected, the waveform will expand or compress
around the center of the display. When Ground is selected, the channel
ground level will remain the same position on the display and waveform will
zoom about the ground level.

Sticky key: If sticky feature is turned ON, when adjusting positions (CH1,
CH2, MATH, REF, Trig. Lev. and Trig. Pos.), the object will stop at zero
position until next adjustment, for the ease of getting back to initial
positions.

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To Measure Automatically

The Measure button in the menu area activates the automatic measurement
function. The instruction below shows the powerful measurement function of
DS1000CA series oscilloscopes.

Auto Measurement

Figure 2-103 Measure button

The oscilloscopes provide 20 auto measurements: Vpp, Vmax, Vmin, Vtop, Vbase,
Vamp, Vavg, Vrms, Overshoot, Preshoot, Freq, Period, Rise Time, Fall Time,
Delay1-2 , Delay1-2 , +Width, -Width, +Duty, -Duty (10 voltage and 10 timing
measurements).

Press the Measure button to display the menu of the Automatic Measurements
settings.

Figure 2-104 Table 2-68 The Measure menu

Menu Settings Comments

CH1 Select CH1 or CH2 as source channel
Source
CH2 for measurement.
Voltage Select to measure voltage parameter.

Time Select to measure time parameter.

Clear Clear measurement result on screen.

Display OFF Turn off all measurement result.
All ON Turn on al measurement result.

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1. Page 1 for Voltage Measurements

Figure 2-105 Table 2-69 The Voltage Measurement menu

Menu Settings Comments

Measure maximum voltage of a
Maximum
waveform.
Measure minimum voltage of a
Minimum
waveform.

Peak-Peak Measure Peak-to-Peak Voltage.

Measure a flat top voltage of a

Top
square waveform.

2. Page 2 for voltage measurements

Figure 2-106 Table 2-70 The Voltage Measurement menu

Menu Settings Comments

Measure a flat base voltage of a
Base
square waveform.
Measure voltage between Top and
Amplitude
Base.
Measure average voltage of a
Average
waveform.
Measure Root Mean Square Voltage
RMS
of a waveform.

3. Page 3 for Voltage Measurements

Figure 2-107 Table 2-71 The Voltage Measurement menu

Menu Settings Comments

Measure overshoot in percentage of
Overshoot
an edge.
Measure preshoot in percentage of
Preshoot
an edge.

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4. Page 1 for Time Measurements

Figure 2-108 Table 2-72 The Time Measurement menu

Menu Settings Comments

Period Measure Period of a waveform.

Freq Measure Frequency of a waveform.

Rise time Measure Rise Time of a rising edge.

Fall time Measure Fall Time of a falling edge.

5. Page 2 for Time Measurements

Figure 2-109 Table 2-73 The Time Measurement menu

Menu Settings Comments

+Width Measure +Pulse Width of a pulse wave.

-Width Measure –Pulse Width of a pulse wave.

+Duty Measure +Duty Cycle of a pulse wave.

-Duty Measure –Duty Cycle of a pulse wave.

6. Page 3 for Time Measurements

Figure 2-110 Table 2-74 The Time Measurement menu

Menu Settings Comments

Measure the signals delay between
Delay1→2
two channels at the rising edge.
Measure the signals delay between
Delay1→2
two channels at the falling edge.

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NOTE: The results of the automatic measurements will be displayed on the bottom
of the screen. Maximum 3 results could be displayed at the same time. When there
is no room, the next new measurement result will make the previous results moving
left out of screen.

Operation Explanation:

1. Select the signal channel for measuring. CH1 or CH2 according to the signal of
interest.
Press soft buttons as follows: Measure→Source→CH1 or CH2.
2. To see all measurement values, set the Display All to ON. 18 measurement
parameters will be displayed on the screen (except for “Delay1→2 ” and
“Delay1→2 ” ).
3. Select parameters page for measuring; select voltage or time parameters pages
by pressing soft button as follows: Measure→Voltage or time →Vmax, Vmin……
4. To get the measured value on the screen; select the parameters of interest by
pressing the soft button on the right of the menu, and read the data on the
bottom of the screen.
If the data is displayed as “*****”, it means the parameter cannot be measured
in current condition.
5. Clear the measure values: press Clear and all of the auto measure values would
disappear from the screen (except for “Display all” parameters).

Clear measured data from screen

Turn on/off the mass measurement

Figure 2-111 Measure menu

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Automatic measurement of voltage parameters

The DS1000CA series oscilloscopes provide automatic voltage measurements

including Vpp, Vmax, Vmin, Vavg, Vamp, Vrms, Vtop, Vbase, Overshoot and
Preshoot. Figure 2-112 below shows a pulse with some of the voltage measurement
points.

Overshoot

Vmax

Vtop

Vpp Vamp

Vbase

Vmin

Preshoot
Figure 2-112
Voltage parameters

Vpp: Peak-to-Peak Voltage.

Vmax: The maximum amplitude. The most positive peak voltage measured over
the entire waveform.
Vmin: The minimum amplitude. The most negative peak voltage measured over the
entire waveform.
Vamp: Voltage between Vtop and Vbase of a waveform
Vtop: Voltage of the waveform‟s flat top, useful for square/pulse waveforms.
Vbase: Voltage of the waveform‟s flat base, useful for square/pulse waveforms.
Overshoot: Defined as (Vmax-Vtop)/Vamp, useful for square and pulse
waveforms.
Preshoot: Defined as (Vmin-Vbase)/Vamp, useful for square and pulse waveforms.
Average: The arithmetic mean over the entire waveform.
Vrms: The true Root Mean Square voltage over the entire waveform.

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Automatic measurement of time parameters

DS1000CA series oscilloscopes provide timing parameters auto-measurements;

Frequency, Period, Rise Time, Fall Time, +Width, -Width, Delay 1→2 , Delay 1→2 ,
+Duty and -Duty.
Figure 2-113 shows a pulse with some of the time measurement points.

Rise Time Fall Time

90%

50%

10%

+Width -Width

Figure 2-113
The time parameters

Rise Time: Time that the leading edge of the first pulse in the waveform takes to
rise from 10% to 90% of its amplitude.
Fall Time: Time that the falling edge of the first pulse in the waveform takes to fall
from 90% to 10% of its amplitude.
+Width: The width of the first positive pulse in 50% amplitude points.
-Width: The width of the first negative pulse in the 50% amplitude points.
Delay 1→2 : The delay between the two channels at the rising edge.
Delay 1→2 : The delay between the two channels at the falling edge.
+Duty: +Duty Cycle, defined as +Width/Period
-Duty: -Duty Cycle, defined as -Width/Period

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To Measure with Cursors

Figure 2-112 shows the Cursor button on the front-panel.

Cursor Measurement

Figure 2-114 Cursor button

The cursor measurement has three modes: Manual, Track and Auto Measure.

1. Manual:
In this mode, the screen displays two parallel cursors. Move the cursors to make
custom voltage or time measurements of the signal. The values are displayed on
the boxes below the menu. Before using cursors, make sure to set the Signal
Source as the channel for measuring.

2. Track:
In this mode, the screen displays two cross cursors. The cross cursor sets the
position on the waveform automatically. Adjust cursor‟s horizontal position on
the waveform by rotating the multifunctional knob ( ). The oscilloscope
displays the values of the coordinates on the boxes below the menu.

3. Auto Measure:
This mode will take effect with Automatic Measurements. The instruments will
display cursors while measuring parameters automatically. These cursors
demonstrate the electrical meanings of these measurements.

NOTE: The Auto Measure mode for Cursor measuring will take no effect without
automatic measurements.

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Manual Mode

Press Cursor→Mode→Manual to display the manual mode menu.

Figure 2-115 Table 2-75 Manual mode menu

Menu Settings Comments

Adjust the cursor to measure X/Y
Mode Manual
parameters manually.
Shown as vertical line to measure the
X
horizontal parameters.
Type
Shown as horizontal line to measure the
Y
vertical parameters.
CH1
Source CH2 Select the measurement signal source.
MATH/FFT
CurA Set CurA effective and adjust it.
CurB Set CurB effective and adjust it.

In this mode, the oscilloscope measures the Y or X coordinate values of the cursors,
and the increments between the two cursors.

To do manual Cursor Measurements, please do as the following steps:

1. Select the Manual mode for cursor measurement by pressing soft button as:
Cursor→Mode→Manual.
2. Select the cursors type by pressing soft button as Cursor→Type→ X or Y.
3. Select channel Source for measurements by pressing soft button as:
Cursor→Source→CH1, CH2 or MATH/FFT.
4. Move the cursors to adjust the increment between the cursors:(Details in the
following Table)

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Table 2-76 The Cursor menu

Cursor Increment Operation

Turn the multifunctional knob ( to move
X
cursor A horizontally.
Cursor A
Turn the multifunctional knob ( ) to move
Y
cursor A vertically.
Turn the multifunctional knob ( ) to move
X
cursor B horizontally.
Cursor B
Turn the multifunctional knob ( ) to move
Y
cursor B vertically.
NOTE: Cursor could be moved only when the curse function menu is displayed.

5. To get measurement values:

Position of Cursor A (Time cursor centered on the midpoint of screen; Voltage

cursor centered on channel ground level).
Position of Cursor B (Same as above).
Horizontal space between cursor A and B (△ X): Time between cursors (1/△ X),
units in Hz, kHz, MHz, GHz.
Vertical space between cursor A and B (△ Y): Voltage between cursors.

NOTE: The values will be automatically displayed on the right upper corner of
screen when the cursor function menu is hidden or displaying other menus.

Term Explanations:

Cursor Y: Cursors Y appear as horizontal lines on the display to measure

vertical parameters. Usually it is used to measure the Volts. When the
source is set as function, the units are assigned to the function.

Cursor X: Cursor X appears as vertical lines on the display to measure

horizontal parameters. Usually it indicates the time of trigger excursion.
When the source is set as FFT, X means frequency.

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Track Mode

Press Cursor→Mode→Track to display the track mode menu.

Figure 2-116 Table 2-77 Track mode menu

Menu Settings Comments

Mode Track Set Track mode in cursor measurement.
CH1
Set Cursor A in conjunction with CH1,
Cursor A CH2
CH2 or turn off Cursor A.
None
CH1
Set Cursor B in conjunction with CH1,
Cursor B CH2
CH2 or turn off Cursor B.
None
CurA Turn the multifunctional Knob ( ) to
(Cursor A) move cursor A Horizontally.
CurB Turn the multifunctional knob ( ) to
(Cursor B) move cursor B horizontally.

In Track mode, the cross cursor is displayed on the waveform under measuring. If
you move the horizontal position of cursor, the horizontal coordinate and vertical
coordinate of current point as well as the increments of them will be displayed
immediately. Note: horizontal coordinate represents time value, vertical coordinate
represents voltage value.

To do Track mode Cursor Measurements, follow these steps:

1. Select the Track mode for cursor measurement by pressing soft button as:
Cursor→Mode→Track.
2. Select channel Source for Cursor A and Cursor B by pressing soft button as:
Cursor→Cursor A or Cursor B→CH1, CH2 or None.
3. Move the cursors to adjust the horizontal positions of the cursors:

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Table 2-78 The Cursor usage

Cursor Operation
Cursor A Turn the multifunctional knob ( ) to move cursor A horizontally.

Cursor B Turn the multifunctional knob ( ) to move Cursor B horizontally.

NOTE: Moving cursor horizontally is not allowed when other (not tracking cursor)
menu is activated.

4. To get measurement values:

 Position of Cursor A (Time cursor centered on the midpoint of screen;
Voltage cursor centered on channel ground level).
 Position of Cursor B (Time cursor centered on the midpoint of screen;
Voltage cursor centered on channel ground level).
 Read the horizontal space between Cursor A and B (△ X): Time between
cursors, units in seconds.
 (1/△ X), units in Hz, kHz, MHz, GHz.
 Vertical space between cursor A and B (△ Y): Voltage between cursors,
units in V.

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Auto Mode

Press Cursor→Mode→Auto to display the auto mode menu.

Figure 2-117 Table 2-79 Auto mode menu

Menu Settings Comments

Display the cursors for the current
Mode Auto automatic measuring. (See the following
figure).

There will be no cursor display if no parameters are chosen in Measure menu. The
oscilloscope could move cursor automatically to measure 20 parameters in Measure
menu.

Figure 2-118
Auto Measure Mode of Cursor Measurement

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To Use Run Control Buttons

The RUN control buttons include AUTO (auto setting) and RUN/STOP.

AUTO: The AUTO features automatic adjustments to produce a stable display of the
input signal. Press AUTO button, the following menu appears.

Figure 2-119 Table 2-80 The Auto menu

Menu Settings Comments

Press to display multi-cycle waveform

Multi-Cycle on the screen.

Press to display single cycle

Single
waveform on the screen.
Cycle
Press to display the waveform‟s rising
edge and measure its rise time
Rise Edge
automatically.
Press to display falling edge of the
waveform and measure fall time
Fall Edge
automatically of it.
Press to cancel all the Auto Set
actions, the oscilloscope will recover
(Cancel)
to its previous status.

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Auto-Set functions

When the AUTO is pressed the oscilloscope is configured to the following defaults:

Table 2-81 The Auto menu

Menu Settings
Display format Y-T
Acquire mode Normal
Vertical position Adjust to right position
Vertical “Volts/div” Adjusted
Volts/Div Coarse
Bandwidth limit OFF* (Full bandwidth)
Signal Invert OFF
Horizontal position Center
Horizontal “S/div” Adjust to right position
Trigger type Edge
Trigger source Find the channel with input signal automatically.
Trigger coupling DC
Trigger voltage Midpoint setting
Trigger mode Auto
NOTE*: When measuring small signal, the Bandwidth limit will be turned on automatically.

RUN/STOP: Run or Stop waveform acquiring.

NOTE: In STOP status, the volts/div and horizontal time base can be adjusted in a
fixed limit. That is, to zoom in/out the signal in vertical and horizontal directions.

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Chapter 3 Application & Examples

Example 1: Taking Simple Measurements

The function is used to observe an unknown signal; to display, measure frequency,

and peak-to-peak amplitude.

1. To quickly display a signal, please do the steps as follow:

(1) Set the probe and the channel attenuations to 10X.
(2) Connect signal to CH1 with the probe.
(3) Press the AUTO button.

The oscilloscope sets the vertical, horizontal, and trigger controls at the best
status automatically. To optimize the waveform display, adjust these controls
manually to meet the requirements.

2. Selecting Automatic Measurements

The oscilloscope takes automatic measurements on most signals. To measure
the frequency and the peak-to-peak amplitude, do these steps as follows:

(1) Measure peak-to-peak amplitude.

Press Measure→Source→CH1 to set the measurement source
Press Voltage→Peak-Peak to select the peak-to-peak measurements and the
result will be displayed on the screen.
(2) Measure frequency.
Press Measure→Source→CH1 to set the measurement source
Press Time→Freq to select the frequency measurements and the result will be
displayed on the screen.

NOTE: The frequency and peak-to-peak measurements are shown on the

screen and are updated periodically.

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Example 2: View a Signal Delay Caused by a Circuit

This example is to test the input and output signals of a circuit and observe the
signal delay. First, set the probe and the channel attenuation to 10X and connect
CH1 probe to the input, CH2 to the output of the circuit.

Do these steps as follow:

1. Display the signals (CH1 and CH2):

(1) Press the AUTO button.
(2) Adjust the vertical and the horizontal scale by turning the knobs to
appropriate ranges for display.
(3) Press the CH1 button to select Channel 1, and turn the vertical
knob to adjust the vertical position of Channel 1 waveform.
(4) Press the CH2 button to select Channel 2, and turn the vertical
knob to adjust the vertical position of Channel 2 waveform.

2. Measure the delay time when a signal going through the circuit.
(1) Auto-measuring the delay:
Press Measure→Source→CH1 to set the measurement source.
Press Time to select the measurement Type.
Press Delay 1→2 to display the result on the screen.
(2) You can see the change of the waveform in the following figure:

Figure 3-1 Waveform distortion

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Example 3: Capture a Single-Shot Signal

To capture a single event, it needs to gather some pre-test knowledge of the signal
in order to set up the trigger level and slope correctly. For example, if the event is
derived from TTL logic, a trigger level of 2 volts should work on a rising edge.

The following steps show how to use the oscilloscope to capture a single event.

1. Set the probe and the channel attenuations to 10X.

2. Set up the trigger.

(1) Press the MENU button in the Trigger control area to display the menu.
(2) Press Edge to select the trigger mode. Press Slope to select . Press Source to
select CH1. Press Sweep to select Single. Press Set Up→Coupling to select DC.
(3) Turn the vertical and horizontal knobs to adjust the Volts/Div and
the Time base in a proper range for the signal.
(4) Turn the knob to adjust trigger level.
(5) Press RUN/STOP button to start capturing. When the trigger conditions are met,
data appears on the display representing the data points that the oscilloscope
obtained with one acquisition.

This function helps to capture the occurrence easily, such as the noisy with
large amplitude; set the trigger level higher a little above the normal level and
press RUN/STOP and wait. When noise occurs, the instrument will record the
waveform before and after the trigger. Adjust the button in the
horizontal control area and change the level of the trigger position, will get the
inverted delay trigger. It is useful to observe the waveform before the
occurrence of the noise.

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Example 4: To Reduce the Random Noise on a Signal

If the signal is noisy (Figure 3-2), set up the oscilloscope to reduce the noise on the
waveform and avoid its interference to the signal.

Figure 3-2 Signal with noise

1. Set the probe and the channel attenuations to 10X.

2. Connect a signal to the oscilloscope and obtain a stable display.

3. Improve the trigger by setting the Coupling.

(1) Press the MENU in the Trigger control area.
(2) Press Set Up→Coupling→LF Reject or HF Reject.
HF Reject (High frequency reject) adds a low pass filter with the -3 dB cut-off
point at 150 kHz. Use HF rejects to remove high frequency noise such as AM or
FM broadcast stations from the trigger path.

LF Reject (Low frequency reject) adds a high pass filter with the -3 dB cut-off
point at 8 kHz. Use LF Reject to remove low frequency signals such as power
line noise from the trigger path.

4. To reduce the noise by setting the acquisition type and adjust the waveform
intensity.

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(1) If there is noise within the signal and the waveform looks too wide, in this case,
choose average acquisition. In this mode the waveform will be thin and easy to
observe and measure.

To use average follow these steps.

 Press soft button as Acquire→Acquisition→Average.
 Toggle the Averages soft button to select the number of averages that best
eliminates the noise from the displayed waveform. It can be adjusted from 2-
256. (See Figure 3-3)

Figure 3-3 Signal without noises

(2) To reduce the noise it can also be achieved by reducing the intensity of the
display.

NOTE: It is normal that the refresh rate will slow down when the average
acquisition mode is ON.

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Example 5: Making Cursor Measurements

There are 20 build-in automatic measurements. They can also be conducted using
cursors to make time and voltage measurements of a waveform quickly.

Measure the Peak Frequency of the First Sinc Waveform

To measure the ringing frequency at the rising edge of a signal, do these steps:

1. Press Cursor key to see the Cursor menu.

2. Press Mode to set Manual mode.
3. Press Type to select X.
4. Turn ( ) knob to place cursor A on the first peak of the wave.
5. Turn ( ) knob to place cursor B on the second peak of the wave.

Figure 3-4 Waveform display

Observe the delta in time and frequency displayed on the screen.

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Measure the Amplitude of the First Waveform Peak of the Sinc.

Please follow these steps:

1. Press Cursor key to see the Cursor menu.
2. Press Mode to set Manual mode.
3. Press Type to select Y.
4. Turn ( ) knob to place cursor A on the first peak of the wave.
5. Turn ( ) knob to place cursor B on the second peak of the wave.

Observe the following measurements in the cursor menu: (See Figure 3-5)
 The delta voltage (peak-to-peak voltage of the waveform)
 The voltage at Cursor 1
 The voltage at Cursor 2

Figure 3-5 Waveform display

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Example 6: The application of the X-Y operation

Viewing Phase Changes through a Network

Theme: Connect the oscilloscope to monitor the input and output of the circuit and
capture the phase changes.

To view the input and output of the circuit in an X-Y display, do these steps:
1. From the probe menu set the attenuation to 10X. Set the switch to 10X on the
probes.
2. Connect the CH 1 probe to the input of the network, and connect the CH 2 probe
to the output.
3. If the channels are not displayed, press the CH1 and CH2 buttons.
4. Press the AUTO button
5. Adjust the vertical knob to display approximately the same amplitude
signals on each channel.
6. Press the MENU in horizontal control area to display the menu
7. Press the Time Base soft button to select X-Y.
The oscilloscope displays a Lissajous pattern representing the input and output
characteristics of the circuit.
8. Adjust the vertical and knobs to a desirable
waveform display.
9. Apply the Ellipse method to observe the phase difference between the two
channels.

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Signal must be
centered in X

D A B

Figure 3-6
Ellipse method to observe the phase difference

Sin = A/B or C/D, where  = phase shift (in degrees) between the two signals.
From the formula above, you could get:
 = arcsine (A/B) or arcsine (C/D)
If the main axis of the ellipse is at I and III quadrant,  must be in the range of
(0~π/2) or (3π/2~2π). If the main axis is at II and IV quadrant,  must be in the
range of (π/2~π) or (π~3π/2).

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Example 7: Triggering on a Video Signal

Test a video circuit in the DVD set. Use video trigger to obtain a stable display.

Triggering on Video Fields

To trigger on the video fields, please do as the following steps:

1 Press the MENU key in the Trigger control area to see the Trigger menu.
2 Press Mode to select Video.
3 Press Source to select CH1 as trigger source.
4 Press Polarity to select .
5 Press Sync as Odd Field or Even Field.
6 Adjust the to set trigger level at the video sync pulse to get stable
trigger.
7 Turn the horizontal knob to see a complete waveform on the screen.

Figure 3-7 Waveform display

DS1000CA series triggers on the Odd field or Even field. To avoid confusion when
Odd field and Even field trigger simultaneously, choose Odd field or Even field as in
step 5 above.

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Triggering on the Video Lines

1. Press the MENU key in the Trigger control area to see the trigger menu.
2. Press Mode to select Video.
3. Press Source to select CH1 as trigger source.
4. Press Polarity to select .
5. Press Sync to select Line Num.
6. Turn ( ) knob to trigger on a specified line number.
7. Adjust the to set trigger level at the video sync pulse to get a stable
trigger.
8. Turn the horizontal knob to observe a complete waveform on the
screen.

Figure 3-8 Waveform display

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Example 8: FFT Cursor Measurement

FFT measurements include: Amplitude measurement (VRMS or dBVRMS) and

Frequency measurement (Hz).
Do these steps as follow:
1. Press Cursor→Manual.
2. Press Type to select X or Y.
3. Press Source to select FFT.
4. Turn ( ) knob to move the cursor to an point of interest.

Figure 3-9 Cursor amplitude measurement

Figure 3-10 Cursor frequency measurement

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Example 9: Pass/Fail Test

The Pass/Fail Test is one of enhanced special functions based on DS1000CA series.
In this test function the oscilloscope, compares the input signal to the established
waveform mask. If the waveform “touches” the mask, a “Fail” signal occurs,
otherwise the test passes. When needed, a programmable output can be used for
external automatic control applications. The output is built in as a standard feature,
and is optically isolated.

Do the steps as following:

1. Press Utility→Pass/Fail.
2. Press Enable Test and select ON.
3. Press Mask Setting→Load.
4. Press Load to recall the saved mask or press X Mask and Y Mask to adjust the
horizontal limit and vertical limit then press Create Mask to create a new mask.
5. Press Output to select the expected outputting waveforms.
6. Press Operate to start the test.

Figure 3-11 Waveform display

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Chapter 4 Troubleshooting

1. After the oscilloscopes is powered on, the screen remains dark (no
display), please inspect the instrument following these steps:
(1) Check the power cable connection.
(2) Check if the power switch is turned on.
(3) After the above inspection, restart the oscilloscope.
(4) If the problem still remains, please contact RIGOL for help.

2. After the oscilloscopes is powered on, the screen can not display
normally:
Do not turn the instrument on/off frequently. Wait 5 seconds for the next
start-up, otherwise, malfunction screen might be caused.

3. After the signal acquisition the waveform does not appear, please
check according to the following steps:
(1) Check if the probes are correctly connected with the signals.
(2) Check if the probes are firmly connected to the channels.
(3) Check if the probes are correctly connected with the object being tested.
(4) Check if the circuit can generate signal at the test point (Connect the probe
compensator output to an input channel to confirm whether the testing point
has no signal or the input channel is in some troubles).
(5) Repeat the acquisition.

4. The measurement result is 10 times higher or lower than the value

expected.
Check if the probe attenuation is the same as the channel attenuation.

5. If the oscilloscope does not get a stable waveform display, please

check according to the following steps:
(1) Check the Trigger Source and notice if it is set to the channel in use.
(2) Check the Trigger Type. Use “Edge” for normal signals, and use “Video” for
VIDEO signals.
(3) Switch the Coupling into HF Rejection or LF Rejection in order to filter the noise
which disturbs trigger.

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6. After pressing the RUN/STOP button, the oscilloscope does not display
any waveform on screen.
Check whether the Trigger Mode is set to “Normal” or “Single” and see whether
the trigger level is out of the signal range. If yes, set the trigger level in proper
range by turning the knob or pressing the 50% button. Or set the
Trigger Mode as “AUTO”. Moreover, push AUTO button to display the waveform
on screen.

7. After the Acquisition is set to “Averages” or Display Persistence is set

ON, the waveform refreshes slowly.
It is normal in these settings.

8. The signal is displayed as ladder like waveform.

(1) The time base maybe is too low. Turn the horizontal knob to
increase horizontal resolution to improve the display.
(2) Maybe the display Type is set to “Vectors” set it to “Dots” mode to improve the
display.

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Chapter 5 Specifications

All specifications apply to the DS1000CA Series Oscilloscopes unless noted

otherwise. To meet these specifications, two conditions must first be met:

 The instrument must have been operating continuously for thirty minutes within
the specified operating temperature.
 Must perform the Self Cal operation, accessible through the Utility menu, if the
operating temperature changes by more than 5℃.

All specifications are guaranteed unless noted “typical”.

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Technical Specifications

Acquisition
Sampling Modes Real-Time Equivalent
Sampling Rate 2GSa/s[1] (single channel) 50GSa/s[2]
1GSa/s (each channel)
Averages N time acquisitions, all channels simultaneously, N is
selectable from 2, 4, 8, 16, 32, 64, 128 and 256

Inputs
Input Coupling DC, AC, GND
Input Impedance 1MΩ± 2%, in parallel with 15pF± 3pF
50Ω± 2%[3]
Probe Attenuation Factors 1X, 5X, 10X, 50X, 100X, 500X, 1000X
300V (DC＋AC Peak, 1MΩ input impedance，
Maximum Input Voltage 10X)
5V (VRMS, 50Ω input impedance, BNC) [3]
Time delay between channel
500ps
(typical)

50Ω
With DS1302CA, DS1202CA
Without DS1072CA, DS1102CA

Horizontal
Sample Rate Range 1Sa/s-2GSa/s (Real-Time), 50GSa/s (Equivalent) [2]
Waveform interpolation Sin(x)/x
Record Length Up to 10k samples for single channel, at 2GSa/s
5k samples for each channel
Scan speed Range 1ns/div-50s/div, DS1302CA
(Sec/div) 2ns/div-50s/div, DS1102CA, DS1202CA
5ns/div-50s/div, DS1072CA
1-2-5 Sequence
Sample Rate and
±50ppm (over any≥1ms time interval)
Delay Time Accuracy
Delta Time Single-shot: ± (1 sample interval + 50ppm × reading
Measurement Accuracy + 0.6 ns)

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(Full Bandwidth) >16 averages: ± (1sample interval + 50ppm ×

reading + 0.4 ns)

Measurements
Manual Voltage difference between cursors (∆V)
Cursor Time difference between cursors (∆T)
Reciprocal of ∆T in Hertz (1/∆T)
Track Voltage value for Y-axis waveform
Time value for X-axis waveform
Auto Cursors are visible for Automatic Measurement
Auto Vpp, Vamp, Vmax, Vmin, Vtop, Vbase, Vavg, Vrms, Overshoot,
Measure Preshoot, Freq, Period, Rise Time, Fall Time, +Width, -Width,
+Duty, -Duty, Delay1→2 , Delay1→2

Vertical
A/D converter 8-bit resolution, each channel samples simultaneously
Volts/div Range 1mV/div-10V/div at input BNC
Offset Range ± 40V(205mV/div-10V/div)
± 800mV(1mV/div-200mV/div)
Analog Bandwidth 70MHz(DS1072CA)
100MHz(DS1102CA)
200MHz(DS1202CA)
300MHz(DS1302CA)
Single-shot 70MHz(DS1072CA)
Bandwidth 100MHz(DS1102CA)
200MHz(DS1202CA)
300MHz(DS1302CA)
Selectable Analog
Bandwidth Limit 20MHz
(typical)
Lower Frequency
≤5Hz (at input BNC)
Limit (AC -3dB)
Rise Time at BNC, <1.2ns, <1.7ns, <3.5ns, <5ns,
typical On 300MHz, 200MHz, 100MHz, 70MHz respectively
Dynamic range ± 5div
DC Gain Accuracy 1mV/div: ± 8% (Normal or Average acquisition mode)
2mV/div-5mV/div: ± 4% (Normal or Average acquisition
mode)

User‟s Guide for DS1000CA Series 5-3

RIGOL

10mV/div-10V/div: ± 3% (Normal or Average acquisition

mode)
DC Measurement Average of ≥16 Waveforms with vertical position at zero:
Accuracy, Average ± (DC Gain Accuracy× reading+0.1div+1mV)
Acquisition Mode Average of ≥16 Waveforms with vertical position not at
zero:
± [DC Gain Accuracy× (reading+ vertical position)+(1% of
vertical position)+0.2div]
Add 1mV for settings from 1mV/div to 200 mV/div
Add 50mV for settings >200mV/div to 10V/div
Delta Volts
Delta Volts between any two averages of 16 waveforms
Measurement
acquired under same setup and ambient
Accuracy (Average
conditions: ± (DC Gain Accuracy× reading + 0.05 div)
Acquisition Mode)
Overshoot <20%

Trigger
Trigger Sensitivity 0.1div-1.0div (adjustable)
Trigger Level Range Internal ± 6 divisions from center of screen
EXT ± 1V
EXT/5 ± 3V
Trigger Level Accuracy Internal ± (0.3div× V/div)
(typical) applicable for (± 4 divisions from center of screen)
the signal of rising and EXT ± (6% of setting + 40 mV)
falling time ≥20ns EXT/5 ± (6% of setting + 200 mV)
Normal mode: pre-trigger(262144/ sampling rate),
Trigger Offset delayed trigger 1s
Slow Scan mode: pre-trigger 6div, delayed trigger 6div
Trigger Holdoff range 500ns-1.5s
HF reject 100kHz± 50kHz
LF reject 8kHz± 20％
Set Level to 50%
(typical) Input signal frequency ≥50Hz

Edge Trigger
Edge trigger slope Rising, Falling, Rising + Falling
Pulse Trigger
Trigger condition (＞, ＜, =) Positive pulse, (＞, ＜, =) negative pulse
Pulse Width range 20ns – 10s

5-4 User‟s Guide for DS1000CA Series

 RIGOL

Video Trigger
Video standard & Support standard NTSC, PAL and SECAM broadcast
line frequency systems. Line number range: 1-525 (NTSC) and 1-625
(PAL/SECAM)
Slope Trigger
Trigger condition (＞, ＜, =) Positive slope, (＞, ＜, =) negative slope
Time setting 20ns – 10s
Alternate Trigger
Trigger on CH1 Edge, Pulse, Video, Slope
Trigger on CH2 Edge, Pulse, Video, Slope

NOTES：
[1] Only one input channel is available when Sample rate is at 2GSa/s.
[2] This is the highest specification, the specific specifications are as follows:
DS1302CA: 50GSa/s
DS1202CA, DS1102CA: 25GSa/s
DS1072CA: 10GSa/s
[3] For DS1202CA and DS1302CA only.

User‟s Guide for DS1000CA Series 5-5

RIGOL

General Specifications

Display
Display Type 5.7 in. (145 mm) diagonal TFT Liquid Crystal
Display
Display Resolution 320 horizontal × RGB× 234 vertical pixels
Display Color 64k color
Display Contrast (typical) 150:1
Backlight Brightness (typical) 300 nit

Probe Compensator Output

Output Voltage (typical) 3 Vpp into ≥1 MΩ load
Frequency (typical) 1kHz

Power
Supply Voltage 100 ~ 240 VACRMS, 45-440Hz, CAT II
Power Consumption Less than 50VA
Fuse 2A, T rating, 250 V

Environmental
Ambient Operating 10℃~ 40℃
Temperature Non-operating -20℃~ +60℃
Cooling Method Fan force air flow
Humidity +35℃ or below: ≤90% relative humidity
+35℃~ +40℃: ≤60% relative humidity
Altitude Operating 3,000 m or below
Non-operating 15,000 m or below

Mechanical
Size Width 303mm
Height 154mm
Depth 133 mm
Heavy Without package 2.4 kg
Packaged 3.8 kg

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 RIGOL

IP Protection
IP2X

Calibration Interval
The calibration interval is one year

User‟s Guide for DS1000CA Series 5-7

 RIGOL

Chapter 6 Appendix

Appendix A: DS1000CA series Accessories

Standard Accessories

 Probe× 2 (1.5m), 1:1, (10:1) Passive Probes

This Passive Probe is 6MHZ which belongs to 150v CATII when the power switch
is in 1X.
This probe fit bandwidth upper limit which belongs to 300V CATII when the
power switch is in 10X.
 A Power Cord that fits the standard of destination country
 Resource CD (including User‟s Guide)

Optional Accessories

 DS1000CA soft carrying case

 BNC Cable
 RS-232 Cable
 USB Cable
 USB-GPIB Adapter
 50Ω Impedance Adapter

All accessories (standard and optional) are available by contacting your local RIGOL
office.

User‟s Guide for DS1000CA Series 6-1

RIGOL

Appendix B: Warranty

RIGOL warrants its products‟ mainframe and accessories in materials and

workmanship within the warranty period. During the period concerned, RIGOL
guarantees the free replacement or repair of products which are approved defective.

To get repair service or obtain a copy of the whole warranty statement, please
contact with your nearest RIGOL sales and service office.

RIGOL do not provide any other warranty items except the one being provided by
this summary and the warranty statement. The warranty items include but not being
subjected to the hint guarantee items related to tradable characteristic and any
particular purpose. RIGOL will not take any responsibility in cases regarding to
indirect, particular and ensuing damage.

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Appendix C: Maintenance

General Maintenance
Do not store or leave the instrument in where the instrument will be exposed to
direct sunlight for long periods of time.

Caution
To avoid damages to the instrument or probes, do not expose them to liquids which
have causticity.

Cleaning
Clean the instrument and probes often based on its operating conditions require. To
clean the exterior surface, perform the following steps:
1. Disconnect the instrument from all power sources.
2. Clean the loose dust on the outside of the instrument and probes with a lint-
free cloth (with a mild detergent and water). When clean the LCD, take care to
avoid scarifying it.

WARNING
!
To avoid injury resulting from short circuit, make sure the instrument is
completely dry before reconnecting into a power source.

User‟s Guide for DS1000CA Series 6-3

RIGOL

Appendix D: Any Comment or Question?

If you have any question or comment on our document, please mail to:
service@rigol.com

6-4 User‟s Guide for DS1000CA Series

 RIGOL

Index

50% ........................................ 1-16 Horizontal ..................................5-2

AC Coupling .............................. 2-6 I/O setup ................................. 2-62
AC Line .................................... 2-43 Inputs .......................................5-2
Acquisition ................................ 5-2 Instant Execute Key .................. 2-89
Alternative Trigger .................... 2-38 Invert a waveform .................... 2-13
Appendix .................................. 6-1 Language ................................. 2-63
AUTO ...................................... 2-89 LF Reject ................................. 2-44
Auto Trigger ............................. 2-43 Math........................................ 2-14
Automatic Measurement ............ 2-77 Measurements ............................5-3
Average Acquisition................... 2-49 Normal Trigger ......................... 2-44
Bandwidth Limit ......................... 2-8 Nyquist Frequency .................... 2-17
Blackman Window .................... 2-16 Power ........................................5-6
Channel Coupling ....................... 2-6 Pretrigger ................................ 2-44
Cleaning ................................... 6-3 Probe Attenuation .......................2-9
Coarse/Fine .............................. 1-12 Probe compensation....................1-9
Cursor ..................................... 2-83 Probe Compensator ....................5-6
Cursor Measurements................ 2-83 Pulse Trigger ............................ 2-32
DC Coupling .............................. 2-6 Random Noise ............................3-4
Display ..................................... 5-6 Realtime Sampling .................... 2-49
Display System ......................... 2-50 Rectangle Window .................... 2-16
Edge Trigger ............................ 2-31 REF ......................................... 2-18
Envelope .................................. 2-49 RUN/STOP ............................... 2-89
Equivalent Sampling .................. 2-49 Sampling System ...................... 2-46
Ext and Ext/5 ........................... 2-43 Self- Calibration ........................ 2-73
Factory Setup ........................... 2-59 Single Trigger ........................... 2-44
FFT ......................................... 2-15 Slope Trigger............................ 2-36
FORCE ..................................... 1-16 Sync Pulses .............................. 2-35
Front panel ............................... 1-3 Trigger ......................................5-4
Functional check ........................ 1-7 Trigger Settings ........................ 2-41
GND Coupling ............................ 2-7 Trigger System ......................... 2-30
Hamming Window..................... 2-16 UTILITY ................................... 2-60
Hanning Window ...................... 2-16 Vertical ......................................5-3
HF Reject ................................. 2-44 Vertical Window........................ 1-11

User‟s Guide for DS1000CA Series 1

Video Signal............................. 3-10 Video Trigger ........................... 2-33

6-2 User‟s Guide for DS1000CA Series