DS212 Mini Oscilloscope

User Manual
Version 1.0
Contents

Important Safety Information P1

Chapter 1 DS212 Overview P2

Chapter 2 Interface Introduction P5

Chapter 3 Getting Started P8

Chapter 4 Functional Overview P13

Chapter 5 Product Inspection P20

Chapter 6 Battery Disposal P21

Chapter 7 Technical Support P22

！ Warning: Warning statements identify conditions or practices

that could result in injure yourself or others.

This user manual is

based on APP V1.03 ！ Caution: Caution statements identify conditions or practices
that could result in damage to your device or other property.

Attention: Attention statements identify annotations, usage

tips or additional information.
 Safety Statement

General Safety Information

● Read carefully all the following safety precautions to avoid personal injury
and prevent damage to the device or any products connected to it. Failure
to follow these safety instructions could result in personal injuries or risk of
fire.

● Use proper power cord. Please use power cord specified for this product
and certified for your country/district of use.
● Connect and disconnect properly. Do not connect or disconnect probe or
test leads while they are connected to voltage source. Before you connect
or disconnect current probes,please disconnect power to the circuit under
test.
● Observe all the terminal ratings. To avoid fire or shock hazard, please do
not measure signals at DC40V or above. Please read the User Manual
carefully to learn more about ratings before connection.

● Do not operate in a humid environment.

● Do not operate in a potentially inflammable/explosive atmosphere.
● Please keep the device surface clean and dry.

Operating Environment

Operating Environment Requirement

Operating Condition : +0°C to 50°c

Temperature
Non-operating Condition : -20°c to +60°c

Operating Condition : High Temperature：40°C to 50°C,0% to 90%RH

Low Temperature : 0° C to 40°C,10% to 90%RH

Humidity
Non-operating Condition: High temperature：40°C to 60°C,5% to 95%RH

Low temperature：0° C to 40°C,5% to 95%RH

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 Chapter 1

DS212 Over view

Specifications

Performance parameters
Coupling
AC / DC
Analog bandwidth
1MHz
Maximum sampling rate
10MSa / s
Analog input impedance
1MΩ
Maximum input voltage
±40V ( X1 probe )
Maximum sample memory depth
8K
Horizontal sensitivity
1uS/Div~2S/Div(in 1-2-5 sequence step)
Vertical sensitivity
20mv/Div~10V/Div (in 1-2-5 sequence step)
Functionalities
Modes Vertical precise, horizontal precise measurement andtrigger threshold

Trigger mode Rising/Falling edge trigger

Synchronous mode Auto ， Normal ， Single ， None ， Scan

Auto measurement frequency, cycle time, duty cycle,DC RMS voltage/

Vpp /Vmax/Vmin/Vavg

Inbuilt signal Generator 10Hz~1MHz square wave (duty adjustable) or 10Hz~20KHz Sine/

Square/Triangle/Sawtooth wave

Product parameters

Inbuilt 8MB U disk storage for waveform data and images

Storage
（ 100mm×56.5mm×10mm ）
Dimension
Internal 500mAh Lithium battery, external USB port
Battery
Color TFT LCD display ( 320X240 pixels )
Display

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 Chapter 1

DS212 Over view

Interface & Buttons

Power Button Left-Right Thumbwheel

Run/Pause Button

Up-Down
Thumbwheel

Charge indicator

Signal Input Up-Down Thumbwheel

Wave Out USB Port

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 Chapter 1

DS212 Over view

Operation on option area

Dial Up/Down Dial Left/Right

Button Function

1)Click: Run/Pause
|| 2)long press:Save current parameter/screen display

Wheel M ( Dial Up/Down) Choose up/down

1)Click :Sub-menu On/Off

Wheel M
middle button 2 ) long press : Enter file management
3)Double click : When "Auto Fit" is ON, auto adjustment

Wheel S Dial left/right to increase/decrease the setting parameters

Wheel S 1)Click :Switch Menu/Confirm sub-menu

middle button 2)long press:Menu display/hide

Note that each item's color in Parameter Area is the same as that in Measurement Area.

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 Chapter 2

Interface Introduction

Home screen introduction

Parameter area

Option area

Measurement area

Home screen

Measurement area introduction

Menu Function

△V=V1-V2
Measured Value（Blue corresponds with Channel A,
Yellow with Channel B） corresponding the 1st and
2nd item in Page2

△ T=T2-T1

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 Chapter 2

Interface Introduction

Home screen introduction

Option area introduction

Page1(oscilloscope) Page2(Measurement)
A channel option Frequency

Bchannel option Duty ratio

C channel option
root-mean-square value
TimeBase option
voltage average value
Trigger option
voltage peak-to-peak value
Vernier option
Horizontal window battery voltage

Page3(option)

File management

Output option

System settings

Adjusting option

Product information

relevant information

Annotation: detailed introduction to options refer to Page 13-19

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 Chapter 2

Interface Introduction

Home screen introduction

Parameter area introduction

Menu Item Functions

/ / Battery supply/USB charging/Full charge

20mV—10V(1-2-5 sequence step ) (Channel A) y-axis voltage per grid,

AC/DC AC/ DC coupling method

20mV—10V(1-2-5 sequence step ) (Channel B) y-axis voltage per grid,

AC/DC AC/ DC coupling

(- A ): Ch_A waveform reverses

(- B ): Ch_B waveform reverses

( A + B ): Ch_A waveform overlaps with Ch_B waveform;

( A - B ): Subtraction of channel A waveform

(-A)/(-B)/(A+B)/(A-B)/
RecA/RecB/RecC/Hide and channel B waveform
RecA:Reload the last waveform saved in Ch_A;
RecB:Reload the last waveform saved in Ch_B
RecC:Reload the last waveform saved in Ch_C
Hide:Hide waveform

1.0uS—1S(1-2-5sequence step) Timebase (x-axis voltage per grid)

Trigger mode ： falling edge trigger/

rising edge trigger

AUTO/NORM/SINGL/ Auto/Normal/Single/Slow Scan/

NONE/SCAN/STOP Instant Scan/Run/Pause

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 Chapter 3

Getting Star ted

Power On/Off

● "OFF"Power On/Off Button

●Switch power button to "OFF" to turn off DS212

(If DS212 was powered off automatically, switch
off the power button before turning on.)

Turn on/off

● Normally, turn on DS212, it enters APP1 by default.

●Hold Wheel S and turn on DS212, it enters APP2 (If

APP2 is not installed, it enters DFU mode.)

Switch APP

●Hold Pause button“ “and turn on DS212,

to enter DFU mode.

Upgrade mode

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 Chapter 3

Getting Star ted

Check up before use

Make a quick inspection of functions to ensure the device is working soundly.

Please perform following steps:
● Turn on power and access the homepage of the mini oscilloscope.
● Place in the standard signal (e.g. square wave 1 KHz, Vpp=3V), insert X1
probe’s MCX end to CH A or CH B, and the probe to “OUT”. Check if the
measurement value and the standard value are equal, calibrate if different.
See below for detailed instructions:

Connect probes to both the MCX and Adjust relevant parameters of CH A：

CH A input jacks 1. Adjust the DC mode in AC/DC function in CH A
2. Voltage adjustment: Switch Voltage to 1V

Measure WAVE OUT outlet waveform 9

 Chapter 3

Getting Star ted

Operation Introduction

Switch main menu

In main menu, middle click Wheel S to switch main menu

Show/Hide main menu

In main menu, hold Wheel S middle button to show/hide main menu

Change time base

When hidden in main menu,dial left/right Wheel S to change time base

(middle click Wheel S to switch current trigger channel)
Change voltage

When hidden in main menu，dial up/down Wheel M to change voltage

(middle click Wheel M to switch Channel A/B) 10
 Chapter 3

Getting Star ted

Operation Introduction

Show/Hide sub-menu

In main menu, middle click Wheel M to show/hide sub-menu

Confirm option

In sub-menu, middle click Wheel S to confirm operation

Choose menu

In main menu/sub-menu, dial up/down Wheel M to choose up/down menu options

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 Chapter 3

Getting Star ted

Operation Introduction
Adjust menu
parameters

In main menu/sub-menu, dial left/right Wheel S to increase/decrease the setting

parameters.(When adjusting parameters of "Post" in sub-menu, hold Wheel S
middle button can fast adjust readings)

Show/Hide
sub-menu of file
managerment
shortcut
In main menu/sub-menu, hold Wheel M middle button to show/hide
sub-menu of file managerment
"Auto Fit" setting
x2

Enter "Trigger" in "Page 1" of main menu, set "Auto Fit" to "ON", double click
Wheel M middle button, DS212 will automcatically calibrate amplitude, time
base and trigger.

Auto-off setting

Enter "system setting" of "Page 3" under main menu, choose "Power off",
and dial Wheel S left/right to choose the time setting of auto power off.
If charging via USB, auto power off will not be activated.
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 Chapter 4

Functional Over view

Overview of Menu options

DS212 Menu

Page1 Oscillo Page2 Measure Page3 Options

Save Param
Voltage Save Bmp
Post Source Save Dat
CH_A AC/DC Freq Type File Manage Save Buf
Enable Enable Save Csv
Probe Load Dat
Load Buf
CH_B Same With CH_A
Source Save Svg
Math Duty Type
Type
CH_C Post Enable
WaveOut Option Freq
Enable
Duty
1.0uS - 2.0S Volume
TimeBase Source
1-2-5 BKlight
RMS Type
SyncMode Enable Standby
TrigMode System Setting Power Off
Source Menu Cycle
Trigger Item Cycle
Threshold Source
Enable Vavg Type Post Cycle
Auto Fit Enable Calibrate Zero
Calibration
Restore Data
T1 Post
T2 Post Device SN
Source
Enable T Hardware
Cursors Vpp Type
V1 Post MCU Type
Enable
V2 Post Product Info LCD Type
Enable V USB Disk
DFU Type
Post APP Type
X_Window Depth Vbat Battery voltage About
Enable
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 Chapter 4

Functional Over view

Specific Parameter Intro

Menu Options Functions Annotation for Functions Description

Channel A y-axis voltage 20mV/50mV/0.1V/0.2V/0.5V/

Voltage 1.0V/2.0V/5.0V/10V
per grid

Adjust Channel A waveform position

Post upward/downward in the window Position:5-195

AC/DC channel A coupling AD/DC

Enable channel A display/hide ON/OFF

Probe X1 / X10

Channel B y-axis 20mV/50mV/0.1V/0.2V/0.5

Voltage
Page1 voltage per grid V/1.0V/2.0V/5.0V/10V

Oscillo
Adjust Channel B waveform position
Post upward/downward in the window Position:5-195

AC/DC channel B coupling AD/DC

Enable channel B display/hide ON/OFF

Probe X1 / X10

Calculation between CH_A –A,-B,A+B,A-B,

Match waveform and CH_B waveform RecA,RecB,RecC

Adjust CH_C waveform position

Post upward/downward in the window Position:5-195

Enable CH_C display / hide ON/OFF

TimeBase X-axis 1.0us-2.0s(1-2-5

TimeBase
voltage per grid sequence step )

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 Chapter 4

Functional Over view

Specific Parameter Intro

Menu Options Functions Annotation for Functions Description

AUTO/NORM/SINGL/
NONE/SCAN
Syncmode trigger mode
Syncmode
selection Automatic /standard /
single pass /slow scan/
immediate scan

Rising edge/Falling edge

Trigmode Choose the Triggering Mode
Triggering mode

Choose the Triggering

Source channel
CH A/CH B

Horizontal Triggering
Threshol Position:-80-110
Position Level

Display/Hide Horizontal
Enable ON/OFF
Triggering Position Level

Page1 Auto Fit Automatic adjustment ON/OFF

Oscillo
Time measurement
T1.Post Position : 5-248
cursorT1

Time measurement
T2.Post Position:5-248
cursor T2

Display /Hide Time

Enable.T ON/OFF
Measurement cursor

Voltage Measurement
V1.Post Site selection : 2-198
Cursor V1

Voltage Measurement
V2.Post Site selection:2-198
Cursor V2

Display /Hide Voltage

Enable.V CH A/CH B/OFF
Measurement cursor

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 Chapter 4

Functional Over view

Specific Parameter Intro

Menu Item Options Annotation for Functions Description

Horizontal movement Depends sample

Page1 Post to view waveform memory depth
Oscillo
Depth Internal storage depth 1k/2k/4k/8k

Display/hide Trigger line

Enable cursor
ON/OFF

Choose the Measurement

Source channel
CH A/CH B

FREQ/DUTY/ RMS/
Vavg/Vpp/Max/Min

Choose the Notes: Frequency/Duty/

Type Root Mean Square/
Measurement Type Voltage Avergage/
Voltage Peak-Peak/
Voltage Maximum/
Voltage Minimum
Page2
Display/Hide
Measure Enable measurement window ON/OFF

Choose the Measurement

Source channel
CH A/CH B

FREQ/DUTY/RMS/
Vavg/Vpp/Vmax/ Vmin

Choose the Measurement Notes: Frequency/Duty/

Type Type
Root Mean Square/
Voltage Avergage/
Voltage Peak-Peak/
Voltage Maximum/
Voltage Minimum

Display/Hide
Enable ON/OFF
measurement window

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 Chapter 4

Functional Over view

Specific Parameter Intro

Menu Options Functions Annotation for Functions Description

Source Choose the Measurement channel CH A/CH B

FREQ/DUTY/RMS/
Vavg/Vpp/Max/Min

Choose the Notes: Frequency/Duty/

Type Measurement Type Root Mean Square/
Voltage Avergage/
Voltage Peak-Peak/
Voltage Maximum/
Voltage Minimum

Enable Display/Hide measurement window ON/OFF

Source Choose the Measurement channel CH A/CH B

FREQ/DUTY/RMS/
Vavg/Vpp/Max/Min
Page2
Notes: Frequency/Duty/
Measure Type
Choose the
Root Mean Square/
Measurement Type
Voltage Avergage/
Voltage Peak-Peak/
Voltage Maximum/
Voltage Minimum

Display/Hide
Enable measurement window
ON/OFF

Source Choose the Measurement Type CH A/CH B

FREQ/DUTY/RMS/
Vavg/Vpp/Max/Min

Choose the Notes: Frequency/Duty/

Type Measurement Type Root Mean Square/
Voltage Avergage/
Voltage Peak-Peak/
Voltage Maximum/
Voltage Minimum

Display/Hide
Enable measurement window
ON/OFF

Vbat Battery voltage

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 Chapter 4

Functional Over view

Specific Parameter Intro

Menu Options Functions Annotation for Functions Description

Save Save current Middle click Wheel S to save

Param parameter settings

Save bmp file (waveform image) to

Save Bmp the built-in U disk.(Shortcut: long Middle click Wheel S to save
press”Run/Pause”button

Save dat file to built-in U

Save Dat Middle click Wheel S to save
disk

Save buf file (sampling data in

Save Buf buffering area) to built-in U disk
Middle click Wheel S to save

Save csv file (export sampling data in

Save Csv buffering area) to built-in U disk
Middle click Wheel S to save

Page3 Load Dat Load dat file Middle click Wheel S to save
Setting
Load Buf Load buf file Middle click Wheel S to save

Save Svg Save Svg file (sampling buffer figure) In U disc

squar/sine/triangle
Type Output signal type
/sawtooth

Squar(10Hz-1Mhz)sine/
Freq Output signal frequecy triangle/sawtooth(10Hz-20kHz)

Duty Output signal duty cycle 10%-90%

Volume Adjust buzzer volume 0%-90%

Blight Adjust backlight brightness 10%-100%

Standby Adjust standby time 0min-60min

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 Chapter 4

Functional Over view

Dial up/down Wheel M to choose options in option menu, middle click
Wheel M to open option setting menu; dial left/right Wheel S to choose
parameters and change current values.
Specific Parameter Intro

Menu Options Functions Annotation for Functions Description

PowerOff Auto power off time 0min-60min

MenuCycle Main Menu option cycle ON/OFF

ItemCycle Sub-menu option cycle ON/OFF

PostSlide Ripid Slide post ON/OFF

Middle click Wheel S, an auto calibration window will pop

Calibrate
up, middle click Wheel S to auto calibrate; after auto
Zero calibration, save calibration data in the pop-up window
Page3
Middle click Wheel S, a restore factory setting window will
Setting Restore
pop up, then middle click Wheel S to restore factory
Data settings

DeviceSN device serial number

Hardware Hardware version number

MCU Typy Processor type

LCD Typy LCD screen mode

USB Disk U Disk capacity

DFU Typy DFU version

APP Typy APP version

Relevant ancillary information

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 Chapter 5

Product Inspection

Charge and monitor the battery

■ When the battery voltage status turns to“ ”or display

brightness is relatively dim, please charge the battery in time.

！ Charging is available in both power-on and off mode. When the

battery is being charged, the LED will light on until the charging
process is finished.

■ Under any circumstances, switching power button to OFF can turn

off DS212.

General Inspection

● When you get a new DS212 oscilloscope, you are advised to

inspect the product by the following steps.
● Inspect damages caused by shipping.
If the packaging carton or the protection pad is seriously damaged,
keep the package until the oscilloscope & accessories pass the
electrical and the mechanical test.
● Inspect the product.
Please contact the company if the following problems occur:
1) product surface is damaged,
2) product doesn't work properly,
3) product does not pass performance test.
If the damage is resulted from shipping, please keep the package
and contact the company for repair or exchange.

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 Chapter 6

Batter y Disposal

Regulatory Markings

FCC compliance statement

This device is complied with the regulation in the 15th part of FCC
regulation. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference,and
(2) This device must accept any interference received, including the
interference that may cause undesired operation.

The CE mark is a registered trademark of European Community.

This CE mark shows that the product complies with all the relevant
European Legal Directives.

！ Do not dispose in domestice household waste

● This device complies with the WEEE Directive (2002/96/EC)

marking requirement. This affixed product label indicates that you
must not discard this electrical or electronic product in domestic
household waste.
● Disposal and recycling: you must dispose the mini oscilloscope
according to local law and regulations. As the oscilloscope contains
electronic building brick and battery, you must dispose it
respectively with garbage.
● Please dispose the battery in accordance with local
environmental regulations.

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 Chapter 7

Technical Suppor t

Firmware upgrading

To upgrade the firmware of oscilloscope, please carry out the operation below ：

1 . Open web browser to visit www.minidso.com , download the newest firmware

appropriate to oscilloscope to your PC.

2 . Hold Pause button and turn on DS212, to enter DFU mode for upgrade.

3 . Use USB data cord to connect DS212 to your PC, and a removable hard disk
named “DFU V3_40_D” will appear on your PC. Copy the hex firmware to the
root directory of that disk. After the extension of the firmware changes from
“hex” to “rdy”, restart DS212. Then the upgrading process is finished.

For more information, please visit www.minidso.com.

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