Brief introduces —ADO series

The automotive DSO of ADO series is produced by Jinhan Electronic CO.,Ltd with the feature of
compact ,portable and easy operation. We use TFT LCD to make it ease using and improving the efficiency
for the user.
In addition, this product is proven with the characteristic of Stable performance, easy operation and
powerful by several tests of all kinds of cars, so it be provided with good performance and competitive price.
The real-time sampling rate can get to100MSa/S, so it can meet the demand of the automotive market of
capture quick and complex signals. It can also provide other features: Support USB device storage, the user
can upgrade through USB. Dedicated test items and general oscilloscope to meet the requirements of
different levels of customers
Characteristic:

Model ADO102 ADO104

Channel 2 4

Bandwidth 10MHZ

Sampling rate 100MSa/S

Storage depth 4K

Multimeter Contain

—New ultra-thin design, small volume, light weight, convenient carrying

—Color TFTLCD display, 320*240 resolution, waveform display more clearly, stability
—Four analog channel (ADO102 for Dual channel)
—Can be convenient to realize the car corresponding module features one-button

operation
—Any interface screenshot (press F2 screenshot)
—The screenshot can preview

—Supporting USB storage device

—Have the edge trigger function, under universal oscilloscope mode can automatically
Features
detect the support (20Hz - 10MHz)

—Support time and voltage cursors

—Support A variety of waveforms mathematical sum
—Adding a variety of waveform math functions

—Support Chinese and English menu display

—A variety of display styles
—Backlight brightness can be adjusted

—Long standby: single cell battery can work continuously for 5 hours
—With a digital multimeter functions

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 1. Safety warning:
In order to avoid personal injury and prevent any damage to the product or any other product
connected with it, It is inevitable to have a deep realize about the safety precautions of our products before
operating.

NOTE: It is forbidden to use the USB connection and an oscilloscope (or multimeter)
for measurement at the same time, it may damage the instrument!

Only the trained personnel can run maintenance procedures.

1. Avoid fire and personal injury

 Correct plug
Do not insert or remove the probe or test lead when it is connected to a voltage source.

 Connect the probe correctly

The probe ground wire is the same as ground potential. Do not connect the ground wire to high voltage. And do not
touch exposed contacts and parts during testing.

 Check all terminal ratings

In order to avoid the impact of fire and excessive current, please have a read of product manual contain all ratings
and markup information, before you Connect the product to learn more about ratings

 Do not open the lid

Do not operate the product with the cover or panel is removed

 Avoid circuit exposure

Do not touch exposed connectors and components after starting up.

 Do not operate when you suspect that the product has failed
If you suspect that the product has failed, please check with qualified service personnel.

 To maintain proper ventilation, do not operate in humid conditions

 In order to get pure signal and protect products ,please far away heat source , fan blades and
drive shaft when measure the car signal.

 Do not operate inflammable, explosive atmospheres

 Keep the surface clean and dry

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 2, Safety terms and markings

WARNING : A warning statement states the conditions and actions which may endanger the safety of life

The terms in this manual. The following terms may appear in this manual:

CAUTION Indicates conditions and actions that may cause damage to this product and other
NOTE :
property.
Terms on the product:

The following terms may appear on the product

DANGER : There is a direct injury hazard near the mark.

WARNING : Indicates a potential hazard near the mark.

CAUTION : Indicates a potential hazard to this product and any other property.

Symbols on the product: The following symbols may appear on this product

Warning high pressure Protective earthing Measure the ground section

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目录
Content summary .......................................................................................................................... 2
Chapter 1 Getting Started Guide.................................................................................................... 3
1.1 To have a first realize about the front panel and user interface of ADO .................................. 3
1.2 Probe ....................................................................................................................................... 4
1. The safety of the probe........................................................................................................ 4
2. Probe compensation（ See detail in the probe manual, The factory has been
calibrated ） ............................................................................................................................... 4
Chapter 2 Introduction and operation of functions ......................................................................... 5
The main functional framework of the oscilloscope ..................................................................... 5
2.1 Automotive oscilloscope ......................................................................................................... 5
2.1.1 . Quick Operation Guide .................................................................................. 6
2.1.2 Ignition function ................................................................................................. 7
2.1.3 Sensor function ............................................................................................... 17
2.1.4 Actuator function ............................................................................................. 26
2.1.5 Bus test ............................................................................................................ 29
2.2 Universal oscilloscope .................................................................................................... 31
2.2.1 Menus and Control buttons ........................................................................... 31
2.2.2 Connector ........................................................................................................ 32
2.2.3 Automatic setting ............................................................................................ 32
2.2.4 Default setting ................................................................................................. 33
2.2.5 Vertical Systems ............................................................................................. 33
2.2.6 Horizontal system ........................................................................................... 34
2.2.7 Trigger system ................................................................................................ 36
2.2.8 Math System ................................................................................................... 37
2.2.9 System Setup .................................................................................................. 37
2.2.10 The storage system ........................................................................................ 38
Note: Do not use this oscilloscope (or multimeter) to measure when connecting to USB, as this
may damage the instrument! ....................................................................................................... 39
2.3 Introduction and Operation of Oscilloscope Multimeter Function ....................................... 40
Chapter3 Application Examples .................................................................................................. 43
3.1 Singal measure ...................................................................................................................... 43
3.4 Use Multimeter to Measure DC Voltage: ............................................................................. 45
Chapter 4 System Tips and Troubleshooting ................................................................................ 46
4.1 Prompting Message ............................................................................................................... 46
4.2 Troubleshooting .................................................................................................................... 46
Chapter 5 service and support ..................................................................................................... 47
5.1 Warranty Description ............................................................................................................ 47
Appendix A: Technical Specifications ......................................................................................... 48
Appendix B: ADO 102/ADO 104 oscilloscope accessories .......................................................... 49
Appendix C: routine maintenance and cleaning ........................................................................... 49

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 Content summary
This manual major in making a introduce about the operation message of handheld automotive oscilloscope
of ADO series, including the following sections:
◆ Getting Started Guide:
Making a brief introduce about Digital handheld oscilloscope and multimeter front panel, user
interface, function check and probe compensation.
◆ Function introduction and operation：
There is a brief introduce about the function and operation of universal oscilloscope, car oscilloscope
and multimeter
◆ Application example:
Provide some measurement examples for your reference.
◆ The system prompts and troubleshooting:
◆ Service and support：
◆ Appendix：

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 Chapter 1 Getting Started Guide

ADO series digital handheld storage oscilloscope is a small, lightweight portable instrument. It through a
color display provide users with a portable operation and basic test.

This chapter focuses on how to perform the following tasks：

▲Getting to know the front panel and user interface of ADO

▲Implement probe compensation
▲ Match the probe attenuation factor

1.1 To have a first realize about the front panel and user interface of ADO

The first step to have a deep realize about the front panel of the oscilloscope, before using the ADO. The
following is a simple description and introduction about the operation and function of the ADO front panel,
we hope it can help you to control our products in a short time.
To convenient operation , ADO’s front panel is marked with a Chinese menu. The left and right sides of
the display on the panel are marked with various function keys. Use the up, down, left and right keys to set
different options for the current menu and the red power button is used to control the machine on/off.
Other buttons are the function keys, through them, you can enter a different function menu or directly get a
specific function application. As shown in Figure 1-1 and Figure 1-2.

Channel 1-2 F1-F4 multi-selector button

Multimeter

RUN/STOP
Figure 1-1
ADO102
Zoom button

Move button Back

Figure1-2ADO104
Channel1-4

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 Display
Channel
level
Trigger Show
Horizontal Trigger operation
status horizontal
display time / div displacement position
status
Display power
Move the
Corresponds to a different function keys,
button menus will vary

Show the amount of the trigger

position

Channel 1 mark

Show vertical volts / division Frequency waveform display

Figure 1-3 Interface is shown in Figure

1.2 Probe

1. The safety of the probe

The protection settings around the probe body can protect the finger from electrical shock. Before making
any measurements, connect the probe to the oscilloscope and negative grounded (Note: must to keep the
consistency on the attenuation of the probe and the oscilloscope)

2. Probe compensation ( See details in the probe manual, The factory has been calibrated ）

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 Chapter 2 Introduction and operation of functions

The main functional framework of the oscilloscope

According to the functional framework, now we will to realize the AOD from three modules:
Car oscilloscope , general purpose oscilloscope, multimeter.

2.1 Automotive oscilloscope

Features introduce

Ignition Sensor Actuator Bus

1.Primary ignition 1. Crankshaft and 1. Electromagnetic 1. CAN-highCAN-low

2.Secondary ignition camshaft position valve 2. LIN-bus
3.Primary and 2. Vehicle speed 2. Gasoline and diesel 3. K-line
secondary ignition sensor fuel nozzle FlexRay
4.Primary 3. Oxygen sensor 3. Gasoline nozzle
ignition(current) 4. Throttle position (Current)
5.Ignition timing sensor 4. Gasoline nozzle
6.Ignition timing and 5. Air flow meter (Voltage and
primary ignition 6. Manifold absolute Current)
7.ignition timing and pressure Variable valve ttiming
crankshaft 7. Knock sensor
8.double-cylinder Accelerator pedal
secondary ignition

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 When the voltage signal voltage of the measured signal is not clear , you could use multimeter function
which contained in this series of oscilloscopes to test out it and then to set the oscilloscope and a probe
attenuation ratio. The text of the functional test with the measured model is Dodge Cool Granville 2.4L
version. As the different car models measured waveforms are different, so there some differences may be
exist. While measuring two kinds of signals, low frequency signal can be used as a trigger source to ensure
the stability of the waveform. (Change the trigger source, press the trigger button to change)

2.1.1 . Quick Operation Guide

Setting essentials：
step1 Step2
To select the corresponding Through the up and down
(1)Setting waveform amplitude:
channel keys to adjust
(2)The movement of the waveform:
Adjust through the left and
Up and down: Select the corresponding channel
right keys
Adjust through the left and
Left and right: Press Time base key
right keys
(3)Adjust the waveform density Through the up and down
Press the time key
(time base): keys to adjust
Moving the left and right keys
Press the start / stop key, then to see whether having
(4)Waveform freeze playback View:
press the time base button, phenomenon of missing
crankshaft

(5) The wave is difficult to capture: first press the trigger key, then by moving the "L"and"R" keys to control the
right side of the screen red trigger arrow, the red trigger arrows move to the appropriate position of the
waveform until the waveform stabilized, usually with the left zeroes potential or above A little bit of position.
And the source of the trigger must be the corresponding channel, the position of the triggered arrow is marked
on the right side of page 3. (Trigger function in the car circuit detection process is very frequent must be
proficient);

Supplementary content
Class 5 signals on the car circuit：

such as the battery voltage control module (PCM) output sensor reference
1) DC signal (DC):
voltage;
abs speed sensor magnetic crankshaft and camshaft position sensor
2) AC signal (AC):
deflagration sensor;
digital air flow sensor Hall-type speed sensor Hall crankshaft and camshaft
3)frequency modulation signal:
position sensor;
primary ignition coil electronic ignition timing nozzle all kinds of solenoid
4) pulse width modulation signal:
valve;

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5) Serial multiplex signal: CAN / LIN bus;

Automotive electronic signal of the five judgments based on

Amplitude： the electronic signal at a certain instantaneous voltage;

Frequency： the time between two events or cycles, usually the number of cycles per second (Hz)

Pulse width： the time or duty cycle of the electronic signal

the shape of the electronic signal characteristics; its curve and the rising edge of the rising
Shape：
edge.
Array: the repetition of the composition of the specialized information signal
(6)If the difference among two frequency test signal is large,There may be a channel of the waveform shaking , this
time you need to trigger the channel to a slower frequency of the signal source; If measuring the
crankshaft and camshaft signal in the same time ; ch1 connect the crankshaft, ch2 connect the camshaft.
Press the trigger button, then press F3, will trigger the source to ch2; moving left and right keys can control
screen to the right of the red trigger arrow to fine-tune;
(7) Remember the notes on the oscilloscope screen on page 3;

Waveform Recording

Start /finish recording

Dynamic waveform
playback

Choose back

Choose front

You can select the function no matter in automotive special menu or General
OSC, through the way that select OSC interface, then press “MATH” 2 times and
then F1. Another function can be run by press the correspond keys.
NOTE: F2 is the key of playback the waveform, the playback rate connects with
the time base setting of the waveform recording time.

2.1.2 Ignition function

（1）Ignition Introduction
1）Ignition system type
There is a long history of the use of traditional ignition systems with boards，Has now been
gradually replaced by a direct ignition system (DIS).
Direct ignition system is divided into three types:
▲Double-ignition system (DEC) with double-ended output ignition coil.
▲ single-ended output ignition coil using a single ignition system (CPC).

▲ Integrated Ignition System (COP) with integrated spark plugs.

The common feature of the three ignition systems is that the output of the ignition coil is

delivered directly to the spark plug without passing the distributor.

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 2）Traditional ignition system.

1. Cam
2. Breaker
3. Ignition coil
4. Distributor
5. Spark plugs

Traditional ignition system main consists by a battery, cam, breaker, ignition coil, distributor and
spark plugs;
The role of the battery is the power required to supply the ignition system, cams and circuit
breakers be used to control the ignition system power;
The ignition coil stores the ignition energy and converts the battery voltage to the ignition high
voltage;
The role of the circuit breaker is to turn on or off the point coil primary circuit;
The role of the distributor is to transform the Ignition high pressure produced by fire coil to
cylinder spark plugs according to the working order of the engine
The spark plug puts ignition high pressure into the cylinder combustion chamber，and produce
spark between the electrodes, then Ignite combustible mixture. The advantage of this ignition system
is easy to maintenance and testing, but one of the shortcomings is mechanical parts and electrical
contacts easy to wear, life is short, high-voltage connection is also easy to damage.

3）DEC:

1. Impeller
2. Impeller sensor
3. Other sensor
4. Ignition control module
5. Ignition amplifier
6. Ignition coil
7. Spark plugs
1.
2. Spark plugs
The dual ignition system be consisted of electronic devices, without mechanical parts. Each two
cylinders share an ignition coil，coil secondary two electrodes connect a spark plug separately. That’
s mean there are two spark plugs at the same time igniting, one of the tanks in the normal ignition,
the other cylinder is in the exhaust process(Spark spark "waste" in the exhaust)，The pressure in the
exhaust of the cylinder close to the air pressure, so it just needs a low Ignition voltage.
One of the advantages of a dual ignition system is the lack of failure, so seldom need to maintain, In
addition, it have a good adjust performance in Ignition system, like radio waves less, low fuel
Consumption. The disadvantage still needs high voltage lines and spark plug connectors.

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4）CPC and COP

1. Impeller
2. Impeller sensor
3. Other sensor
4. Ignition control module
5. Ignition amplifier
6. Ignition coil
7. Spark plugs

Each cylinder has a separate ignition coil which is the most advanced ignition system today. This
ignition system is divided into two types: CPC and COP. The integrated ignition system integrates the
ignition coil on the spark plug , single ignition is followed by a high voltage line from the ignition coil
to the spark plug.

5）Ignition principle
▲The electronic ignition

1. Signal sensor
2. Ignition control module (ECU)
3. Ignition amplifier
4. Ignition coil
5. High voltage line and spark plugs

Electronically controlled ignition through a set of sensors to collect information related to the
engine，contain Speed, cooling temperature and engine load. Position sensors and speed sensors are
the most important information for ignition systems, which come from Impeller sensor or camshaft
sensor. According to this message , ignition control module can calculate the ignition time and
charging time. If there is some sensor is not working may put out a wrong signal, so we need the
modern control module to check the authenticity of signal put out by the sensor. It is invalid to the
ignition control module outputs the signal directly to drive the ignition coil，we need to enlarge the
signal by ignition amplifier. In fact, the ignition amplifier is generally installed in the ignition coil, in
this case the primary ignition signal is undetectable; Or installed in the ignition control modeling
this case the output signal of the ignition control module is undetectable. Thus, it is particularly
important to detect engine failures and performance through secondary ignition signals.
▲Mechanical ignition system

1. Electric shock
2. Ignition coil
3. Distributor / high voltage line / spark plugs

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 Contact-driven

1. Sensor
2. Ignition amplifier
4. Ignition coil
5. Distributor / high voltage line / spark plugs

Sensor-driven

In a mechanical ignition system, the charging time and ignition time are controlled by the distributor
camshaft. The electrical sensor (Hall or magnetoelectric) or contact acts as a sensor.The contacts can
drive the ignition coil directly，And the electric transmitter to go through the ignition to drive the
ignition coil.

6）Sensor

Hall devices and magnetic induction coil are commonly used sensors.
Hall device output square wave 0-5 volts or 0-12 volts.
Magnetic induction coil output sine wave, the amplitude is related to rotational speed. Ignition control
signal.
Ignition control module output control signal 0-5 V or 0-12 V square wave.

7) the correct broken line pin broken line as shown in the figure((except the secondary
ignition, all of the other ignition need to has broken line, the line to measure the
secondary ignition directly to the ignition probe caught in the sub-line can be)

Cross section of the ignition coil (inside is secondary coil outside is primary coil）

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1）Primary ignition：

•Install the battery, press the red power button until you hear the buzzer ring to enters the main
step1 menu interface, as shown in Figure 1

•Press the up and down keys to select the instrument work mode and then press the "OK" button, the default
selected "ignition" selected after entering the ignition function selection interface, and then through the up
step2 and down keys to select "primary ignition" to enter the oscilloscope interface,
•As shown in Figure 2

•Connect the probe to the oscilloscope CH1 and the probe is set to 10X, then the ground pin is connected to
step3 the signal ground

•As the oscilloscope primary ignition has been set by default (probe file 10X, time base file 1ms), simply
connect the probe pin to the ignition coil can visually display the waveform. Figure 1 (when the waveform
step4 shaking too fast to capture, you can set the trigger mode for a single trigger to detect)

• Press "CH1" to view the values and configurations (configuration is default

step5
•The displayed waveforms can be implemented by adjusting the time base, vertical volts / lattice and trigger mode to
achieve their own needs (time base, vertical volt / grid and other specific methods of operation please refer to the general
step6 oscilloscope operation)

Figure 1 Figure 2

Note: Time base, vertical volt / grid adjustment, storage reference waveform and screenshots are
separate located in the general oscilloscope function's horizontal system, vertical systems and
storage systems , other operations copy the general operation of the oscilloscope.

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 Breakdown voltage or The figure is the Chrysler Dodge measured at
ignition voltage peak idle time of the primary ignition voltage
waveform. The starting voltage is 14V, the
coupling mode is DC coupling, the starting
Burn line voltage is the battery voltage. The coil began
Arcing or burning to charge, then the horizontal axis of the time
voltage base is 1ms, accounting for two cells, so the
charging time is 2 milliseconds, an
electromotive force is generated after power
Oscillation failure, the burning time is 1.1 ms. There are
Ignition coil coil more than oscillating waveforms , Sasser is a
begins charging
Damped Sasser which produced by the
mutual inductance among ignition primary
coil and secondary coil , This waveform is a
Pic-1 Primary ignition direct reflection of the working state of the
two coils.

When ignited, the coil secondary produces a high voltage. When the voltage gradually
increased to a certain level, Spark plug puts out spark, this voltage is the ignition voltage. The
voltage then drops rapidly to another voltage and remains for a while，this is the combustion
voltage，The burning time is the maintained voltage time at the combustion voltage. At the end of
the burning, The energy in the ignition coil is substantially exhausted , the residual energy forms
damping oscillations on the coil.
From the graph , you can analyze the vehicle's operating situation in detail. Ideally, the
pattern is very stable, which mean the voltage of each ignition process is the same. The graphics
of each cylinder should be roughly similar. But in the real operation, it is not so perfect , the
shaking is always exist ,small or large ,in the graph. For example, Ignition or breakdown voltage is
unstable, and the burning time may also be different, but that doesn't mean the engine is faulty.
This situation may need me integrate the experience gained
in past time ,and other graphics to make a comprehensive
analysis. So it is a low probability event to catch a very
ideal graphic in every test.

Ignition or breakdown voltage:

If the ignition voltage is too high, even beyond the screen

range，which Indicate that the resistance value in the
secondary ignition circuit is too high. There are many
reason can produce the phenomenon of high breakdown voltage like: there is an open circuit in
line , spark plug damage, high pressure line or spark plug gap is too large and so on . In contrast，
If the breakdown voltage is too low, indicating that the resistance in the secondary circuit circuit
resistance is lower than normal, this may caused by the follows reason : the spark may be too dirty
or broken, high voltage leakage and others .

Burning line and time:

If there is too much clutter on the burning line, you need to check whether the cylinder bad
ignition, ignition too early, the injector is damaged or the spark plug is dirty. The length of the

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duration of the combustion line is related to the concentration of the gas in the cylinder, normally,
when the burning time more than 2ms means that the mixed gas is too thick. Conversely, if the
burning time is less than 0.75 ms means the mixture is too thin.

Currently, We use the sensor capacitive probe as Ignition probe. One end of the capacitor module
is clamped on the cylinder line or on the ignition extension line, and the other end is
grounded .The probe is marked as 10000:1, but in the actual measurement process found that the
attenuation voltage has a certain difference, Usually at the position of the oscilloscope X1，factory
default vertical Vog is 200mv / lattice, vertical volts about 200mv ~ 1v to fine-tuning（Press the
corresponding channel ,and then up and down keys to adjust the value of the bottom left corner of
the screen）Ensure that the breakdown voltage does not exceed the screen. The density of the
waveform can be adjusted by time base, The factory default is 1ms, the coil charging time in
milliseconds to calculate, EFI motorcycle time base units may be smaller.
2）Secondary ignition

Prompt "Use a dedicated

same to Primary Step select Step select secondary step ignition probe"Wait a few
Step1 ignition 2 seconds to enter the
ignition 3 ignition 4
interface

NOTE:
 Independent ignition and high pressure ignition probe need to part with special ignition
extension cable and ignition sensor probe, respectively, connect the ignition probe to
oscilloscope CH1.
 As the oscilloscope secondary ignition has been default set by Ignition system with sub -
cylinder line (probe file 1X, time base file 1ms), Ignition probe with a capacitor (black small
box) one folder in the sub-line line, the other end of the ground or access the battery negative.
If the car is an independent ignition system, you will need to purchase an "independent
ignition extension cord" (one end of the ignition coil package is a spark plug effect instead of
the sub-cylinder line) when the ignition probe is caught on the independent ignition extension
line.

We all know that the engine ignition system is divided into three categories：

First one :All cylinders share an ignition coil, the high voltage generated by the ignition
coil is distributed to the spark plugs of the cylinders through the distributor. Early carburetor
period and the electronic control engine is used in this way.
Next one : The two cylinders share one ignition coil, like Elan , Teke Excelle. In
four-cylinder engine, first and fourth cylinder share one ignition coil, second and third cylinder
share one ignition coil.
Last one: Independent ignition which a spark ignition plug in each cylinder. This ignition
system has three major advantages: 1. Strong energy of ignition 2. Good sealing and good
anti-interference ability 3. Long life, now the car is basically this ignition system.
We know that the primary ignition waveform is generated by the primary coil, the
secondary ignition waveform is generated by the secondary coil. Relatively, the primary
ignition produces a low voltage, and the secondary ignition produces a high voltage of tens of
thousands of volts. Note that the high pressure here is just a pulse signal which can break the

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 spark plug electrode ignition cylinder mixed gas in a moment, just like the lighter is ignited,
The high voltage million pressures will not cause harm to the person. No matter the voltage is
primary ignition or the secondary ignition，its energy is from the 12V or 24V battery voltage
through the primary coil generated by the primary voltage，through the secondary coil to
produce secondary high voltage pressure.

Note:

The ignition extension cable connection and steps shown as below (ignition extension line to be
purchased separately)

1、

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3) Primary ignition, secondary ignition

This function can achieve primary ignition, secondary ignition, through CH1 and CH2，to
more intuitive observation and contrast two waveforms. Before you select the "primary ignition,
secondary ignition" to get the user interface ,there will be prompted "CH1: primary use standard
probe, CH2: secondary use of special ignition probe" , then waiting a seconds min you can enter
the oscilloscope interface，For other specific operations please refer to the above primary,
secondary ignition function.
Note: This function CH1 for the primary ignition, CH2 for the secondary ignition, pay
attention to the probe connected to the channel.
The figure shows the current waveform of the primary ignition. When the current begins to
flow in the ignition coil, the resulting waveform will rise at a certain slope due to the
characteristics of the coil-specific resistance and inductance. The rising slope is a very important
criterion. Usually the primary ignition waveform will rise at an angle about 60 °. At the same time
in the same time base unit (1ms),the time of primary ignition current waveform coil power is
same as the primary ignition voltage waveform coil charging time (about two cells) ,and the
maximum current through about 5A ~ 6A. When the current of ignition module is turned off , the
current waveform is almost vertical. It should be noted that when the current begins to flow in the
ignition coil, observe the current waveform of the ignition coil, if the left is almost vertical rise, it
shows the ignition coil resistance is too small (short circuit), this will cause driving performance
failure, and will Damage the switching transistor in the ignition mode.
In addition, the time that the current waveform from the beginning to reach the peak is
usually the same,, Which is due to the filling of a good ignition coil current, the time used is kept
constant. The ECU can increase or decrease the turn-on time of the ignition coil through the
ignition module to control the magnitude of the current flowing into the ignition coil Measuring
current waveforms need to use the current clamp, current clamp straight clip, signal line,
oscilloscope set to X1 vertical strip 200mv time base 1ms current clamp do not take anti or the
waveform will be reversed. If you want to measure the current, we can recommend one or two
relatively high costs of current clamp.

4）Primary Ignition (Current)

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 •Same as primary ignition steps 1
STEP1

•enter main menu sector to select "ignition" then select "primary ignition(current)" wait some time you
Step2 can enter the oscilloscope interface【not prompt】

•Just to connect the current clamp to CH1 and ignition coils, the waveform can be showed【Primary
Step3 Ignition has set the default value (probe file 1X, time base file 1ms)】Figure 2

•press "CH1" , You can view the values and configurations(Configuration has been default)
Step4
•You can adjust the time base, vertical volts / lattice and trigger to get your need 【Specific method
operation about the time base, vertical volts , div and others ,please refer to the general oscilloscope
Step5 operation 】

•If the measured waveform is inverted, the current clamp will be in the direction shown in Fig,the specific use of
current clamp , please refer to the current clamp manual (for the purchase of current clamp can contact
NOTE manufacturers recommended)

Figure 2 Figure 3 how to use the current

clamp

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2.1.3 Sensor function

1）Crankshaft, camshaft position sensor (magnetic type, Hall type)

•install the battery then press the red key enter into Main menu interface.【like figure 1】
step1

•select "sensor" to enter submenu ,then select "Crankshaft, camshaft position sensor"(figure 2) to enter second submenu
step2

•choies "Magnetic" or "Hall" then press "ok"with a show of "Amplitude varies with speed" and "0-5v or 0-12v" to waite 1-5S to enter
step3 operation interface

•( channel and function to correspond to CH1: crankshaft position sensor, CH2: camshaft position sensor)
note

•The two probes were connected to the oscilloscope CH1, CH2 and the probe set 1X file respectively, and then then the grounding clip
step4 is used as an earth for the sensor

•As the oscilloscope "magnetic" and "Hall" function has been set by default (probe file 1X,time base file 10ms), just two root probe
connected to the corresponding signal can be intuitive display wareform
•.As shown in Figure 4 (measured by the 800-turn waveform; crankshaft waveform is the movement of the crankshaft and the angle
note of rotation.In the case of magnetism, for example, a sine wave of a cycle represents the trajectory of a tooth, and we can judge
whether there is a phenomenon of missing teeth. The signal wheel with 58 + 2 is a sine wave of one cycle. °, part of the missing
teeth should be counted into.We take a cycle of sine wave time multiplied by 60, that is, a turn of time, usually milliseconds time
unit, then the time unit converted to r / min to get the speed, so we call the crankshaft signal for the speed signal and Corner signal)

step5 •press "CH1" OR "CH2" to check each value and configuration (configuration is default)

•You can adjust the time base, vertical volts / lattice and trigger to get your need 【Specific method operation about the time base,
step6 vertical volts , div and others ,please refer to the general oscilloscope operation 】

Measuring range: magnetic time base 1ms-500ms (grid); voltage 500mv-50v (string)); Hall time base
Note: Precautions when 1-500ms (grid) voltage 1v-10v (string).
measuring magnetic and
Hall-type waveforms
The amplitude and frequency of the magneto-electric type vary with the speed change (similar to
the principle of the generator), and the Hall-type fixed frequency varies with the speed.

Figure 2
Figure 1

17 / 53
 Cranksh
aft

Camshaf

(Magnetic crankshaft and Hall type camshaft)

pic-4 Crankshaft, camshaft position sensor（Hall）

2）The vehicle speed sensor (magnetic, Hall, photoelectric)

•With crankshaft, camshaft position sensor Step 1

Step1

•Enter the main menu interface and select "sensor"Select "speed sensor" enter second submenu,then you can select "Magnetic",
"Hall" or "photoelectric" Press "OK" key to enter the oscilloscope operation interface.
step2

•before you get into the magnetic and Hall-type oscilloscope ,there is prompt "amplitude with the speed change" and "0-5v or 0-
12v" respectively,about ten a few seconds enter the user interface
note

•Connect the probe to the oscilloscope CH1 and the probe is set to 1X, and then the grounding clip used as an earth for the sensor
step3
•As the oscilloscope "magnetic", "Hall" and "photoelectric" function has been set by default (magnetic and Hall: probe file 1X, time
base file 5ms, photoelectric probe file 1X, time base 25ms ), Simply connect the probe to the corresponding signal can be intuitive
step4 display waveform, as shown in Figure 5

• Press "CH1", you can check each value and configuration (configuration is default)
step5

• The displayed waveforms can be implemented by adjusting the time base, vertical volt / grid and trigger mode to achieve their own needs (time
base, vertical volt / grid and other specific methods of operation please refer to the general oscilloscope operation)
step6

Figure 5 Hall-type vehicle speed sensor

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3）Oxygen sensor (zirconium, zircon oxygen before and after oxygen, titanium)

•With crankshaft, camshaft position sensor Step 1

step1

• entering the main menu interface to select "Sensor" , then select "Oxygen Sensor", enter the second submenu
step2 Press the up and down keys to select "Zirconium" or "Titanium", press "OK"

•Connect the probe to the oscilloscope CH1 and the probe is set to 1X, and then the grounding clip
step3 used as an earth for the senso

•As the oscilloscope "zircon" and "titanium" function has been set by default (probe file 1X, time base file 1s), simply
connect the probe to the corresponding signal can be intuitive display waveform, as shown in Figure 6(Note: due to
step4 the "SCAN" scan mode need to wait for the waveform scan out)

•Press "CH1", you can check each value and configuration (configuration is default)
step5
•The displayed waveforms can be implemented by adjusting the time base, vertical volt / grid and trigger mode to achieve their own
needs (time base, vertical volt / grid and other specific methods of operation please refer to the general oscilloscope operation)
step6

Figure 6 Zirconia type oxygen sensor

The range of the titanium oxygen sensor in the case is quite special；about 2.5V to 3.2V between
the changes；This type of titanium oxygen sensor is the most common only in Chrysler's car. If
there is question in the field, you can consult professional professional Chrysler cars technical.

NOTE：

Oxygen sensors are also known as exhaust gas sensors，It plays a very important role in the
exhaust emission control of vehicles equipped with catalytic converters. The oxygen sensor is
mounted on the exhaust pipe before the catalyst. The voltage variation of the zirconium oxygen
varies in the range of 0 to 5 V from 0 to 1 V, because the titanium oxide sensor requires a power
supply voltage. A vehicle equipped with an oxygen sensor is called a "closed loop", meaning that
after the fuel is burned, the sensor will analyze the exhaust emissions and re-adjust the engine oil
according to the results..
Regardless of the number of wires between the oxygen sensor and the engine control module,
the sensor output is always on the black line.
Single line: This line is used to output the sensor itself to generate voltage, usually black.

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Two lines: one output line and one output ground wire.
Three lines: one output line and two heating lines (power and ground). The internal heating
device increases the temperature during cold start to allow the car to be quickly controlled.
Four lines: a signal line and a signal ground wire. The other two are heating lines.

The Zirconium oxygen sensor needs to reach more than 350 ℃ temperature to work properly, the
oxygen sensor normal output feedback voltage between 0 ~ 1V(practice 0.1-0.85v) change
0.5V above the output means the mixture air is too thick; 0.5V is an appropriate balance between
thin and thick, 0.5V below the output that the mixture is too thin. The output voltage change
indicates that the engine control module is changing the air-fuel
Note: 1、The axis is a peak-to-amplitude
ratio (air to fuel ratio, mixed gas concentration).
2、Peak to trough for the two amplitudes，not one
Normal zircon oxygen sensor output voltage waveform should
meet the 3 elements: the highest voltage value, the minimum
voltage value, the response time (voltage from high to low time).
Normally, the permissible range is the maximum voltage value>
850mV, the minimum voltage value is 75 ~ 175mV, the response
time is <100ms. . The requirement for waveform amplitude Amplitude

variation is not less than 8 times the amplitude of the waveform Wavelength

in 10 seconds, That is, in the case of time base 1S, the waveform
reflects the change in the dilute concentration of the oxygen
One amplitude
content in the exhaust gas 8 times ----- the change of the high and
low voltage 8 times. The frequency of the oxygen sensor will be
accelerated when accelerating. As shown in Figure 7 below.
Start the engine, keep the engine speed 1500-2000rpm, after 3
minutes ， Until the engine reaches the normal operating
temperature，Because the engine must reach the normal operating
Pic-7 Zirconia oxygen sensor

temperature and enter the closed loop, the instrument read out the oxygen sensor signal is correct.
When test oxygen sensor , oxygen sensor has power, but not see the waveform changes,, the cause
of the failure may be as follows:
● Poor connection
● Oxygen sensor failure
● Engine vacuum leak
● Poor fuel mix ratio control

Broadband oxygen sensor is now more and more

common, under normal circumstances with the
oscilloscope to measure greater than 2.5 to 3.3v
changes, the multimeter shows 2.4 ~ 2.7v (multimeter
is the average measured oscilloscope reflects the
instantaneous changes in voltage)

Broadband / Broadband Oxygen Sensor

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4）Throttle position sensor (sliding resistance, Hall type, eddy current type)

•With crankshaft, camshaft position sensor Step 1

step 1

•Enter the main menu interface, select "sensor", and then enter the sub-menu, press the up and down keys to select "throttle
position sensor", press "OK" to confirm after entering the oscilloscope interface
step2

•Connect the probe to the oscilloscope CH1 and the probe is set to 1X, and then the grounding clip used as an earth for the senso
step3
•As the oscilloscope "throttle position sensor" function has been set by default (probe file 1X, time base file 500ms) simply
connect the probe to the corresponding signal can be intuitive display waveform, as shown in Figure 7 (Note: due to "SCAN" Scan
mode requires patience to wait for the waveform to scan out)
step4

•Press "CH1", you can check each value and configuration (configuration is default)
step5

•The displayed waveforms can achive their demand by adjusting the time base, vertical volt / grid and trigger mode (time base,
vertical volt / grid and other specific methods of operation please refer to the general oscilloscope operation)
step6

The throttle fully open

Throttle Close Throttle Close

NOTE：Turn on the ignition switch and do not start the engine，Detect the throttle position
sensor signal, slowly open and close the throttle, observe there is or without sudden wave or
irregular change in waveform.When analyzing the throttle position sensor waveform, you should
find out any abnormal waveforms in any signal waveform, For example, an instantaneous voltage
drop may indicate that the sensor itself is wrong, damaged, or dirty.。And this is not normal signal
waveform, but also easily lead to misjudgment of the oscilloscope, the vehicle failure. Most of the
throttle position sensor, in the idle time, the voltage value should be below 1.25V, and the throttle
fully open, the voltage should be 3.4V or more, and its voltage should be smooth changes without
any surge or voltage drop and so on. When the ignition switch is turned on and the engine don't
work , If the waveform does not change with the throttle opening,the cause may be as follows:

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● Poor connection
● The sensor itself is not good

As shown in the following figure throttle position sensor of the anatomical map, the red key
refers to the carbon film, in the throttle at different openings in the metal contacts on the carbon
film trajectory will correspond to the corresponding changes in the output voltage. Usually the
throttle position sensor voltage should be less than 1v from idle when the throttle is fully open
when less than 5v. The waveform should not be broken up and down, the ground to the peak or
large fall. the waveform of one of four in the throttle opening need to special attention which is a
component that universally used in sensor carbon film in driving. The first one of eight to
third of the Carbon film in front throttle is usually first worn out or carbon film off, causing the
waveform to fall directly. Usually the throttle position sensor failure, will cause the engine idle
operation is not normal(Such as idling too high or too low, idle instability, idle easy to turn off) or
engine acceleration is not normal (such as acceleration when the engine shaking, speed up the
reaction hysteresis, etc.)，And sometimes lead to the engine in the operation of intermittent jitter
and so on.

5）Air flow meter sensor

•With crankshaft, camshaft position sensor Step 1

step1

•Enter the main menu interface and select "sensor",And then enter the sub-menu, press the up and down keys to select "air flow
step2 meter sensor"

•Into the second sub-menu Press the up and down keys to select "high frequency" or "low frequency", press "OK" key to confirm
step3 after entering the oscilloscope interface

•Connect the probe to the oscilloscope CH1 and the probe is set to 1X, and then the grounding clip used as an earth for the senso
step4
•As the oscilloscope "Air flow meter sensor" function has been set by default (probe file 1X, time base file 100ms;low frequency:
probe file 1X, time base file 10ms) simply connect the probe to the corresponding signal can be intuitive display waveform, as
step5 shown in Figure 7 (Note: due to "SCAN" Scan mode requires patience to wait for the waveform to scan out)

•Press "CH1", you can check each value and configuration (configuration is default)
step6

•The displayed waveforms can achive their demand by adjusting the time base, vertical volt / grid and trigger mode (time base,
step7 vertical volt / grid and other specific methods of operation please refer to the general oscilloscope operation)

Note: The air flow meter is generally divided into analog air flow meter and digital air flow
meter:

●Hot wire air film air flow meter

The function of the air flow meter is to measure the air flow into the throttle body. The air
flow into the throttle body varies with the engine speed. The analog air flow meter will convert the
detected air flow to a voltage signal among 0-5V then sent to the oscilloscope. Start the engine,
depress the accelerator pedal, then the air flow signal value be enlarged with the throttle opening
increased.
In the idle should remain stable, when full throttle, the signal will rise to the maximum.

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Observe the abnormal phenomenon in the
waveform signal, such as：Whether the
waveform is smooth, with or without a
sudden wave, the waveform shape
suddenly deformed, usually between the
oscilloscope and the sensor line, there is a
bad contact situation, or the sensor itself
bad line.
The sensor voltage output signal,
which is usually the lowest at idle and increases as the engine load increases, typically about
800mv at idle and about 4.5V when the throttle is fully open.

●Digital air flow meter

The function of the digital air flow meter is to measure the air flow into the throttle body. The
air flow into the throttle body varies with the engine speed. The digital air flow meter converts the
detected air flow into a frequency signal. The higher the frequency signal, the greater the amount
of air. Start the engine, this time will be displayed on the screen square wave graph, if no
waveform display, you may enter the analog air flow meter.
Observe the abnormal phenomena in the signal waveform, for example, whether the square
wave waveform changes at right angles, or whether there is a sudden wave. Sensor frequency
signal waveform suddenly changes, usually that the oscilloscope and the sensor line between the
poor contact situation, or the sensor itself bad line.
Digital air flow meter produces a neat square wave signal, the frequency of the pulse is
increases followed with the speed increases of the car, but the duty cycle remains the same. We
refer to these signals as frequency modulation signals. To tap the sensor while the ignition key is
turned on and the engine does not start. If the waveform change that mean the air flow meter
sensor itself is bad, or the line has a short circuit or open circuit.
Air flow meter sensor signal generated by the frequency signal, the frequency is how many
square waves per second signal. In normally, the frequency signal value independent generated by
the air flow meter sensor and engine fixed speed does not change much, If the fluctuation range is
too large, it means that the air flow meter sensor is not good. If the air flow meter is detected, the
air flow meter has a power supply but does not change the waveform. The cause of the
malfunction may be as follows.

●The oscilloscope does not receive the signal from the air flow meter

●The sensor itself is unstable

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6）Intake manifold absolute pressure sensor

•With crankshaft, camshaft position sensor Step 1

step1

•Enter the main menu interface and select "sensor",And then enter the sub-menu, press the up and down keys to select "Intake
step2 manifold absolute pressure sensor",press "OK" key to confirm and enter the oscilloscope operation interface

•Connect the probe to the oscilloscope CH1 and the probe is set to 1X, and then the grounding clip
step3 used as an earth for the senso

•As the oscilloscope "Intake manifold absolute pressure sensor" function has been set by default (probe file 1X, time base file
500ms) simply connect the probe to the corresponding signal can be intuitive display waveform, as shown in Figure 9 (Note:
step4 due to "SCAN" Scan mode requires patience to wait for the waveform to scan out)

•Press "CH1", you can check each value and configuration (configuration is default)
step5

•The displayed waveforms can achive their demand by adjusting the time base, vertical volt / grid and trigger mode (time base,
step6 vertical volt / grid and other specific methods of operation please refer to the general oscilloscope operation)

Idle speed

• Figure 9

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7）Detonation sensor
•With crankshaft, camshaft position sensor Step 1
step1

•Enter the main menu interface and select "sensor",And then enter the sub-menu, press the up and down keys to select
step2 "Detonation sensor",press "OK" key to confirm and enter the oscilloscope operation interface

•Connect the probe to the oscilloscope CH1 and the probe is set to 1X, and then the grounding clip
step3 used as an earth for the senso

•As the oscilloscope "Detonation sensor" function has been set by default (probe file 1X, time base file 500ms)Just connect the
step4 probe to the corresponding signal and then use a small stick to knock the cylinder can be intuitive display waveform

•Press "CH1", you can check each value and configuration (configuration is default)
step5

•The displayed waveforms can achive their demand by adjusting the time base, vertical volt / grid and trigger mode (time
step6 base, vertical volt / grid and other specific methods of operation please refer to the general oscilloscope operation)

8）Accelerator

•With crankshaft, camshaft position sensor Step 1

step1

•Enter the main menu interface and select "sensor",And then enter the sub-menu, press the up and down keys to select
step2 "Accelerator",press "OK" key to confirm and enter the oscilloscope operation interface

•Connect the probe to the oscilloscope CH1 and the probe is set to 1X, and then the grounding clip
step3 used as an earth for the senso

•As the oscilloscope "Accelerator" function has been set by default (probe file 1X, time base file 250ms)Only need to
connect the probe to the corresponding signal can be intuitive display waveform, as shown in Figure 11 (Note: because in
step4 the "SCAN" scan mode need to wait for the waveform scan out)

•Press "CH1", you can check each value and configuration (configuration is default)
step5

•The displayed waveforms can achive their demand by adjusting the time base, vertical volt / grid and trigger mode (time
step6 base, vertical volt / grid and other specific methods of operation please refer to the general oscilloscope operation)

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2.1.4 Actuator function

1）The electromagnetic valve

•installing the battery, press the red button until you hear the buzzer,enter main menu interface.
step1

•Select "Actuator" to sub-menu, press the up and down keys to selectSolenoid valve, then press "OK" , Figure 2
step2

•Connect the probe to the oscilloscope CH1 and the probe is set to 1X, and then the grounding clip used as an earth for the senso
step3

•As the oscilloscope "The electromagnetic valve" function has been set by default (probe file 1X, time base file 25ms)Only need
step4 to connect the probe to the corresponding signal can be intuitive display waveform, as shown in Figure 12

•Press "CH1", you can check each value and configuration (configuration is default)
step5

•The displayed waveforms can achive their demand by adjusting the time base, vertical volt / grid and trigger mode (time base,
step6 vertical volt / grid and other specific methods of operation please refer to the general oscilloscope operation)

•If the waveform goes beyond the screen, it is necessary to switch the probe and the oscilloscope to the x10 solenoid valve
note waveform. The pulse width will change with the speed. We will refer to this type of signal as the pulse width modulation signal.

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2）Gasoline, diesel fuel injectors
•With solenoid valve step 1
step1

•select "Actuator" in main menu interface to the sub-menu, press the up and down keys to select "gasoline, diesel fuel injector",
step2 press "OK" key to enter the oscilloscope interface

•Connect the probe to the oscilloscope CH1 and the probe is set to 10X, and then the grounding clip
step3 used as an earth for the senso

•As the oscilloscope "gasoline, diesel fuel injector" function has been set by default (probe file 10X, time base file 1ms) simply
step4 connect the probe to the corresponding signal can be intuitive display waveform

•Press "CH1", you can view the values and configuration (configuration has been default)
step5

•The displayed waveforms can adjust the time base, vertical volt / grid and trigger mode by themself to achieve their own needs
step6 (time base, vertical volt / grid and other specific methods of operation please refer to the general oscilloscope operation)

3）Gasoline injector (current)

•With solenoid valve step 1

step1

•select "Actuator" in main menu interface to the sub-menu, press the up and down keys to select "Gasoline injector (current)",
step2 press "OK" key to enter the oscilloscope interface (before this , there is a prompt "need to match the current clamp to use")

•Connect the current clamp to the oscilloscope CH1

step3

•As the oscilloscope "gasoline with oil nozzle (current)" function has been set by default (probe file 10X, time base file 1ms)
step4 simply connect the probe to the corresponding signal can be intuitive display waveform

•Press "CH1", you can view the values and configuration (configuration has been default)
step5

•The displayed waveforms can adjust the time base, vertical volt / grid and trigger mode by themself to achieve their own needs
step6 (time base, vertical volt / grid and other specific methods of operation please refer to the general oscilloscope operation)

4）Gasoline injector (voltage, current)

•With solenoid valve step 1
step1
• select "Actuator" in main menu interface to the sub-menu, press the up and down keys to select "Gasoline injector (current, voltage)", press "OK"
key to enter the oscilloscope interface (before this , there is a Prompt "CH1: use probe, CH2: use current clamp" wait a few seconds to enter the
step2 oscilloscope interface)

• Connect the probe to the oscilloscope CH1 and adjust the probe to 10X, and then ground the signal to the ground or ground, the current clamp to
the oscilloscope CH2
step3

• As the oscilloscope "Gasoline injector (voltage, current)" function has been set by default (CH1: probe file 10X, time base file 1ms ; CH2: probe file
1X, time base file 1ms )Only need to connect the two ends of the corresponding signal can be intuitive display waveform, as shown in Figure 13
step4

• Press "CH1" and "CH2", you can view the values and configuration (configuration has been default)
step5

• The displayed waveforms can adjust the time base, vertical volt / grid and trigger mode by themself to achieve their own needs (time base,
vertical volt / grid and other specific methods of operation please refer to the general oscilloscope operation)
step6

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 Figure 13 Saturated switch type gasoline injector
(voltage, current)

Zero potential

Voltage

Current

Note: The waveform has a rectangular concave which is the fuel injection time (fuel injection
pulse width). The injection time of the voltage waveform in the figure is consistent with the rise
time of the current waveform. Solenoid valve will produce an induced electromotive force after
cut its power, which is the normal performance of the coil work. the current waveform has a rise
shown about a 45 °angle, a sharp rise indicates a short circuit of the solenoid valve coil.

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2.1.5 Bus test

1）CAN-high, CAN-low

•install the battery then press the red key when hear the Beep you can enter the main menu interface(same as figure 1 )
STEP1

•select "Bus test" into the Submenu to select "CAN-high ,CAN-low"(by Up and down keys) ,press "ok"to enter oscilloscope
operation interface (same as figure 2)
step2

•connect two probe to CH1,CH2 respectively ,and set to 1X, then connect the grounding clamp to the signal ground
step3
•since the oscilloscope function of "CAN-high ,CAN-low " has been Default settings (CH1, CH2 probe file 1X, time base file
25us), the waveform can be directly displayed just to connect the probe to the corespond signal,(same as the following
step4 picture )

•Press "CH1" and "CH2", you can view the values and configuration (configuration has been default)
step5
•The displayed waveforms can adjust the time base, vertical volt / grid and trigger mode by themself to achieve their own
needs (time base, vertical volt / grid and other specific methods of operation please refer to the general oscilloscope
step6 operation)

Picture-1 Picture-2

CAN- low

CAN-
high

Pic-14 CAN-high, CAN-low

29 / 53
2) LIN-bus
•With CAN-high, CAN-low step
STEP1

•select "Bus test" into the Submenu to select "LIN-bus"(by Up and down keys) ,press "ok"to enter oscilloscope
step2 operation interface (same as figure 2)

•connect probe to CH1 and set to 1X, then connect the grounding clamp to the signal ground
step3

•since the oscilloscope function of "LIN-bus " has been Default settings (CH1 probe file 1X, time base file 500us), the
step4 waveform can be directly displayed just to connect the probe to the corespond signal.

•Press "CH1" and "CH2", you can view the values and configuration (configuration has been default)
step5
•The displayed waveforms can adjust the time base, vertical volt / grid and trigger mode by themself to achieve
their own needs (time base, vertical volt / grid and other specific methods of operation please refer to the general
step6 oscilloscope operation)

3) FlexRay

• With solenoid valve step 1

STEP1

• select "Bus test" into the Submenu to select "FlexRay"(by Up and down keys) ,press "ok"to enter oscilloscope operation interface
(same as figure 2)
step2

• connect two probe to CH1,CH2 respectively ,and set to 1X, then connect the grounding clamp to the signal ground
step3

• since the oscilloscope function of "FlexRay " has been Default settings (CH1, CH2 probe file 1X, time base file 10us), the waveform
can be directly displayed just to connect the probe to the corespond signal,(same as the following picture )
step4

• Press "CH1" and "CH2", you can view the values and configuration (configuration has been default)
step5

• The displayed waveforms can adjust the time base, vertical volt / grid and trigger mode by themself to achieve their own needs
(time base, vertical volt / grid and other specific methods of operation please refer to the general oscilloscope operation)
step6

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2.2 Universal oscilloscope

General Purpose Oscilloscope This

section describes the functions below

Mathemati
Menu and default Vertical Storage
Automatic Horizontal Trigger cal System
control Connector setting
system setting system system system computing settings system
system

2.2.1 Menus and Control buttons

As shown in the following figure:

ADO102 control button ADO104 control button ADO General Button

All models
Time base The "Horizontal" control menu is displayed
trigger Show the “trigger” control menu
CH1、CH2 Display the setting menu “CH1、CH2CH3、CH4”
CH3、CH4
automatic Automatic setting the oscilloscope control state，press the Channel 1 to 4 to achieve the
One-touch trigger function of 20 HZ-10 MHZ
Start / stop Continuous acquisition of waveforms or stop acquisition.
Note: In the stop state, for the waveform vertical and horizontal time base can be adjusted

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 within a certain range, equivalent to the signal in the horizontal or vertical direction of the
expansion
multimeter Press "multimeter" to enter multimeter mode
return Press "Back" to return to the previous menu
Oscilloscope for zooming in, zooming out, or moving the display cursor; used in the
multimeter function to adjust the range
The oscilloscope can be used to move the waveform or move the display cursor; used as a
selection test type in the multimeter function
OK Function confirmation key
F1、F2、F3、 Respectively, select the settings in the first 1,2,3,4 option menu
F4
Oscilloscope on / off key

2.2.2 Connector

VΩ COM CH2 CH1 VΩ COM CH4 CH3 CH2 CH1

ADO102 ADO104
Figure 2-1 Figure 2-1

 CH1-CH4: Input connection for displaying waveforms.

 "COM port" and "VΩ port" are used to connect black and red test leads

2.2.3 Automatic setting

ADO series digital storage oscilloscope with automatic setting function. so it can
automatically adjust the voltage range, time base, and the trigger mode to the best form display
according to the input signal, . The "Auto" button is the function button that is set automatically.
●If multiple channels have a signal, the channel with the lowest frequency signal is used as the
trigger source.
●If no signal is found, connect channel 1 to a signal and press the "Auto" button. As shown in
Figure 2-3:

Figure 2-3:

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2.2.4 Default setting

Before the oscilloscope be sent to the market ,it has been setting to routine operation (default
setting),there is a "Factory mode recovery" operation in the main menu of system setting ,select
"Restore Factory" then press "ok" (by Up and down keys) ,the instrument can saved and returned
to the factory settings, restart the instrument can be used.

2.2.5 Vertical Systems

Channel and its settings

Operation menu of the channel, indicating Table 2-1 below:
Table 2-1
Coupling AC Blocking the DC component of the input signal.
DC The ac and dc component of the signal.
Probes 1X According to the probe attenuation factor to select one of the
10X values in order to maintain the correct reading of the vertical
100X deflection factor. There are three types: 1X, 10X, 100X
Display Open Open display waveforms
Close Close display waveforms
Frequenc / Automatically displays the current input signal frequency
y
peak-to- / Automatically displays the current waveform peak-to-
peak value peak value.
Duty Cycle / automatically displays the current input signal duty
Cycle / automatically displays the current input signal cycle

1). Set the channel coupling and reverse

Take the example that signal applied to the oscilloscope channel, the measured signal is a
square wave signal containing AC component.
●Main menu, select "Universal oscilloscope" press "OK" to enter the oscilloscope interface.
Press "CH1" → "Coupling DC", press “F3”set to DC coupling. DC and AC components of the
input signal to pass through.
As Figure 2-4
● Press "CH1" → "Coupling AC", press “F3” set to AC coupling. DC component of the input
signal is blocked. As Figure 2-5
● Press "CH1" → "Inverse" and press the SELECT function key "F4" to anti opposite way.
Inverting the signal display. Figure 2-6

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 Figure 2-4 Figure 2-5 Figure 2-6

2).Probe scale setting

To cope with the attenuation factor setting of the probe, User need adjust the probe attenuation
scale factor in channel operation menu. If the probe attenuation coefficient ratio is 10:1,
Oscilloscope input channel ratio should be set to 10X, and so on. To avoid the display of
information and measurement data errors occur. Take the CH1 for example:
● Press "CH1" → "F2" to set the probe ratio for 10X.

3).Vertical volts/division adjustment setting

When adjusting the vertical volts/div, the range is 100mV/div-50V/div (probe 10X), Stepping
way to 1-2.5-5, or 10mV/div-5V/div (probe 1X), 1V/div-500V/div (probe 100X). Take the CH1
for example:
● If you set the vertical direction 2.00V/div,press"CH1"→ " "or " " to adjust the vertical
volts / division, press " " or " "to move up and down the entire waveform. As Figure 2-7
● If you set the vertical direction 1.00V/div, the steps in the above example. As Figure 2-8

Figure 2-7 Figure 2-8

2.2.6 Horizontal system

Using the control buttons to change the level of the horizontal scale (time base), trigger
horizontal position (trigger position) in storage . Changing the horizontal scale will causes the
waveform expansion or contraction relative to the screen center, Change the horizontal position
relative to the change point of the waveform trigger position.

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 Table 2-2 Main Menu of horizontal time base

Master time
base Horizontal main time base setting is used to display the waveform

Display Set cursor display or not display

Master time
base cursor Source Select cursor measurement signal source (CH1-CH4)
state
Type There are two types of time and voltage

Cursor1
Time base offset relative to the main vector
Cursor Cursor 2
display
Incremental Cursor 2 - Cursor 1

● Horizontal scale:
Adjust the main group; press the "HORI" button, Press" "or" " to change the scale of the
level, to zoom in or out waveform. If you want to stop waveform acquisition, press the "RUN"
key can be realized. As Figure 2-9, Figure 2-10

Figure 2-9 Figure 2-10

● Horizontal Position:

Adjust the horizontal position of the waveform (trigger position relative to the center of the
screen).Press the "HORI" button, Through " " or " "to move the waveform left or right. The
resolution of the button is changed with time base. Press "AUTO" key can make the horizontal
position return to zero.
●Cursor measurement:
Adjust the measurement, press the " HORI " keys, press "F2-F4" respectively to select the
corresponding function (display, source, type), and then press the " HORI " on the to enter the
cursor display interface, and then " " " " or " ", " " key to adjust the cursor position.

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2.2.7 Trigger system

The trigger determines the time that the oscilloscope starts to acquire data and display waveforms.
Once the trigger is set up correctly, it can convert the unstable display into meaningful waveforms.
Trigger Control menu button" TRIG".
 Trigger Control
Trigger: The oscilloscope trigger mode is edge triggered.
 Edge Trigger:
When the edge of the trigger signal reaches a given level, trigger occurs. Edge trigger is
triggered on the input signal edge trigger threshold. When "Edge”, that is input at the rising
edge, falling edge triggered.
Table 2-3 Edge trigger function menu
Source oscilloscope Set CH1 as trigger source. (CH2-CH4 empathy)
UP Select the trigger signal to trigger on the rising edge
Slope
DOWN Select the trigger signal to trigger on the falling edge
Auto Set in the absence of detectable also can collect waveform trigger conditions
Trigger
Normal Set only a triggering condition is satisfied only waveform
mode
Single Set capture a waveform when a trigger is detected, then stop

Operating instructions (example channel 1):

 Set the trigger level:

.Main menu, select "Universal oscilloscope" press "OK" to enter the oscilloscope
interface .Press "CH1", then press" "or" "adjusts channel 1 mark. Press the "TRIG",
then press" "" "or" "" "adjust the trigger flag arrow, The trigger level is set
according to the trigger flag relative to the channel 1 flag position and the voltage value
represented by each cell in the current vertical direction.

 Set source:
Press the "F3" key to select the source (CH1-CH4)
 Set slope:
Press the "F2" key to select the slope as "up" or "down".
 Set the trigger mode
Press "F4" to select "Auto", "Normal" or "Single".
 Auto: The waveform is refreshed regardless of whether or not the trigger conditions are
met.
 Normal: The waveform is refreshed when the condition is satisfied and the trigger
condition is not satisfied.( Do not refresh the wait for the next trigger event.)

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  Single: Collect the waveform once it meets the trigger condition and then stop it. As
shown in Figure 2-11

Figure 2-11

2.2.8 Math System

Math function is to display CH1, CH2, CH3, CH4 two two-channel waveform additions,
subtraction functions
Table 2-4 Math Functions
Menu Setting Description
Settings
Comments
Arithmetic /
Functions
Source A Settings Source Set CH1, CH2, CH3, CH4 as source B
CH1-CH4
Source B Settings Source Set CH1, CH2, CH3, CH4 as source B
CH1-CH4
Operation A+B、A-B or Be A + B or A-B operation according to the source A,
NULL Source B is set above
▲Press the "operation" button then press the "F4" select operation mode and turn on the
display.

2.2.9 System Setup

Table 2-5 System Functions menu

Menu Settings
Setting Description
Comments
Sound Sound Set sound to "ON" or "OFF"
Display
Brightness Can be set from 1-5
brightness
Language / Chinese or English
Color System four styles to choose "default", "style one"、" style

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 theme two", " style three "
Location
On / Off Minutes of the last open position
History
Version
/ Check the software version of the oscilloscope
Information
Restore
/ Reset
Factory

System Settings
1) Sound settings:
the main menu, select "System Settings" button, press the "OK" to enter the settings
interface, via the arrow keys to select "Sound" press "OK" button, enter the change, left and
right keys to select On or Off and then press "OK "button to confirm.
2) brightness setting:
the main menu, select "System Settings" button, press the "OK" button to enter the
settings interface, via the arrow keys to select "Brightness" press "OK" button to enter modify,
add brightness left minus right then press "OK" key to confirm; the machine can be set
brightness 1-5.
3) language setting:
the main menu, select "System Settings" button, press the "OK" button to enter the
settings interface, via the arrow keys to select "Language" press "OK" button, enter the
change, left and right keys to select the language and then press the "OK" button confirm; the
unit provided in both Chinese and English display interface.
4) Color settings:
language setting: the main menu, select "System Settings" button, press the "OK"
button to enter the settings interface, via the arrow keys to select "System risers" press "OK"
button, enter the change, up and down keys to select a topic style and then press "OK" button
to confirm, the unit provides four display style theme.
5) to restore the factory:
the main menu, select "System Settings" button, press the "OK" button to enter the
settings interface, via the arrow keys to select "Factory" press "OK" button, enter the change,
left and right keys to select OK or Cancel, then press "OK" button to confirm the WTR.

2.2.10 The storage system

ADO Series can store two reference waveforms, 20 groups of shots (depending on memory size)
to the oscilloscope internal storage.
ADO Series provides USB interface, you can save waveform memory shots to the U disk, the
common image BMP image file can be opened by computer software. In addition, two sets of
waveform and parameters are stored and can be called out by "reference waveform" respectively,
displayed on the screen.

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To save a reference waveform:

•open oscilloscope , select"general osc",press "ok "to enter the operation interface.
step1

•Press one of the key "HORI","TRIG","MATH", then press "OK"to get the reference waveform
step2
•press "F2"to select signal rigal and reference waveform successively (every unit signal rigal can Save two sets of reference
waveforms Ref1, Ref2 ),press "F4"to save and show the reference waveform, to end the reference waveform by press''F2" to
step3 select the reference as "NULL"

To save a picture:
•Oscilloscope and automotive modules interface,long press "F2"operating status (the left side of battery indicator) will flash
1 which mean the oscilloscope is taking screenshots, waiting a second ,there is a prompt box with screenshot success

•Multimeter screenshots prompt is " being screenshot”,and there will be a prompt box with screenshot success.
2

•Other interface will appear prompts are screenshots, after the screenshots success there will be a prompt box with
3 screenshot success.

Note: screenshot function can save about 20 pictures,the actual amount depend on
the size of the memory decision, if prompted to screenshot failure, re-screenshots
look, if it doesn't worke then look at the memory can delete a few pictures.

View storage oscilloscope image method:

1) view on computer
•close the device , connect it with computer through USB ,then press "F3" and "on / off" in the same time until
step1 the screen is light

•finish the step 1 , the computer will prompt the U disk has be installed , to open it you can brow the screenshot
step2 picture

•end over steps , you need to click "Exit U disk mode" in your computer ,then disconnect the data cable, press
step3 the power button to re-boot can be used again.

2) view on oscilloscope:
enter the main menu to select screenshot function to enter Screenshot preview function ,you can
view storage oscilloscope image. Press the "OK" key to select the screenshot, press any key to
return to the screenshot list, "F3" key to delete the currently selected screenshot, "F4" key to
delete all screenshots.

Note: Do not use this oscilloscope (or multimeter) to measure when connecting to USB, as
this may damage the instrument!

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2.3 Introduction and Operation of Oscilloscope Multimeter Function

This series of oscilloscopes not only can be used as oscilloscope but also to mutimeter . The
function of digital multimetercan be used to test the DC and AC voltage, resistance, capacitance,
diodes, buzzer on-off . This instrument uses TFT full color display, and has a range display,
polarity display, overload display, battery power display.

Table 2-6 multimeter range

Measure
Range
Type
DC Voltage 400.0mV 4.000V 40.00V 400.0V 1000V
AC Voltage 400.0mV 4.000V 40.00V 400.0V 750V
Resistance 400.0Ω 4.000KΩ 40.00KΩ 400.0KΩ 4.000MΩ 40.00MΩ
Capacitance 51.2nF 512.0nF 5.120uF 51.20uF 100uF
Diode 0V-1.5V
Buzzer-off Below 60Ω ,buzzer alarm

Display manually or automatically DC or AC Running state

Electricity

Meter Interface

Measure Method:
Table2-7 Multimeter Operation Key Function
Key Description
Multimeter Press this key to enter Multimeter Mode.
Press “ ” or “ ” to select Mesure Type
Press “ ” or “ ” to tune the Range

Multimeter’s RUN/HOLD key.

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Note 1: Multimeter default range is "automatic" file, if you want to manually set the range, please
predict the size of the voltage to be measured.

Note 2: "RS232" in the display interface is flashing to indicate that the multimeter is running;
"AUTO" means setting the range automatically

（1）DC and AC voltage measurement

•Connect the black test leads to the COM terminal at the top of the instrument (ie, the corresponding black port), the red test
leads are connected to the instrument's VΩ terminal (corresponding to the red port)
step1

•press red button to open oscilloscope , then select "Multimeter" button to switch to the multimeter function.
step2

•press "R" or "L" button to select "DC" or "AC"

step3
•connect the test pen to voltage and current which we need to measure , then we can read the number . meanwhile the
polarity connected red table pen can also be displayed by the liquid crystal display positive and negative,(When the AC
voltage is not polarized) This instrument defaults to "Auto". If you want to set the range manually, you can change the range
step4 by pressing the "up" or "down" key and then make the measurement.

（2）Resistance measurement

• Select the Resistor file by pressing the "R" or "L" key.

step1

• Connect the measuring pen to both ends of the resistor to be read the
step2 displayed value and manually set the range if desired.

（3）Capacitance measurement

• Select the capacitance file by pressing the "R" or "L" key.

step1

• Connect the measuring pen to both ends of the test capacitor to read the
step2 displayed value.

Note: The scale can not be set manually

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（4）Diode and continuity test

•Press the "L" or "R" key to select "Diode" or "On"

step1
•Put the pen on the two side of the Diode or the line, device can read it’s value.(The
step2 value when measuring diode, it’s diode Conduction voltage drop)

•When mesuareing resistance is below 60Ω, buzzer alams.

step3

Attention:

a) The device has forward and reverse voltae, when the diode connected reversed, the value is
negative.
b) Diode and Buzzer-off mearusing only have “Auto” Range.
c) When measuring,must keep “Sound” On, or the Buzzer can’t alarm.

Ways to setup:

 press the "back" button, until the main menu through the arrow keys to select the "Settings",
click "OK" button to enter the setting
 using the arrow keys select "sound", click "OK" button appears bomb box, through the left
and right button to select the open and click "OK" button to confirm

3. Data Hold Function

"Run / Stop" button is pressed on the instrument, the data will remain being displayed on the
display even if the input signal changes, or eliminate, the value is not changed

Waring 1: When using Multimeter, the OSC dector must not connect to GROUND.
Waring 2: Please select the appropriate Range before measure object.
Waring 3: When the USB cable is connect to other devices, must not measur, or the device
will be damaged.

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 Chapter3 Application Examples

3.1 Singal measure

Measuring an unknown signalman and show it’s value immediately. Quickly display and measure
the frequency and peak-to-peak values of the signal

● If you want show the value immediately ,please do as fllows:

•Enter the "Universal oscilloscope” interface. Setting the probe menu

attenuation coefficient to 10X, and switch the probe to 10X.
step1

•Connect the CH1 probe to the test point.

step2

•Press “AUTO” key.

step3

Figure 3-1

The OSC will automatically set the optimum waveform display to get the super performance. On
the base , you can adjust the Vertical or Horizontal scale, until the waveform meets your
requirements.

● running the auto measure of signal voltage and time parameters：

The digital storage oscilloscope allows automatic measurement of most display signals.
Parameter values (maximum, minimum, duty, amplitude, period), follow these steps:

•Enter the "Universal oscilloscope” interface. Press “AUTO” key, show current waveforms.
step1

•Press "CH1" button to turn pages which can be observed maximum, minimum, duty cycle, amplitude. (CH2-
CH4 similar operations)
step2

•In this case, the signal parameter measurements are shown in F1-F4 corresponding to the location, you can
display the signal parameter values by pressing the corresponding F1-F4 function key to select. Figure 3-1
note

3.2 Cursor measure

This OSC can automatic measure a variety of waveformparameters. All measurement parameters
can be measured by the cursor.Use the cursor and measure the waveform parameters quickly

● Measuring the peak voltage of square wave signal.

Take the CH1 for example. if you want to measure the peak voltage of a square wave signal, do
as follows:

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 •Press “HORI” key to enter the main base cursor state setting
step1

•Press “F2” key to set the cursor “ON”; Press “F3” key to set the source as “CH1-CH4”; press “F4” key to set the type
step2 of the cursor “Voltage”.

•Press “HORI” key again to see location of cursor 1 and cursor 2(relative to the intermediate zero volate reference
step3 level) and increment (V_cursor2-V_cursor1)

•Press “ ” and “ ” to tune the position of cursor 2,“ ” and “ ” to tune the position of cursor
step4 1;and there position and increment will updating on the screen in Real-time. See Pic 3-2 and Pic 3-3.

Note: If you use the cursor to measure the time, only in the second step above, set the cursor type
to time

Figure 3-2 Figure3-3

3.3 Capture the Single Signal

The advantage and feature of digital storage oscilloscope is capture the Aperiodic signal like
pulse, burr in Conveniently. If we need to capture a unit signal , first of all need to have a certain
prior knowledge of this signal in order to set the trigger level and trigger edge. If the signal is not
sure the situation, you can automatically or normal trigger mode to observe the first to determine
the trigger level and trigger edge.
Steps are as follows
1、 As aforementioned, set the attenuation coefficient of
probe and CH1 channel to 10X.
2、 Trigger settings:
（1） Press "CH1” key → press "F3" key to set the
coupling to "DC."
（2） Press the "TRIG" button to display the edge trigger
menu settings.
（3） In this menu, press “F1” key to set the edge type
“slope down”,press “F2” key to set the source
“CH1”,press “F3” key to set the trigger mode to
“single”. Figure 3-4

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（4） Press “RUN” key, the left corner of the display screen will displays “SIGL”,waiting for
the signal meets the trigger condition occurs. If the trigger signal reaches the ertain conditions, it
will displays on the screen. With this feature ，you can easily capture the event accidental, such as
a suddenly low voltage:press”RUN” key to start the wait when there is a low level occurs, the
devices will automatically trigger and the trigger waveform record before and after a period of
time off.”HORI” key can change the horizontal position of the trigger position, and then you can
get different lengths, which can easily observe the waveform. See Figure 3-4

3.4 Use Multimeter to Measure DC Voltage:

● Use “AUTO” measure DC Voltage.

① Press “AVΩ”key, enter Multimeter mode, Auto range default.

② Press “ ” or “ ” to select “DC Voltage”
③ Put the pen on the test point, and it will read The value see Figure 3-5.

Figure 3-5

● Set the Voltage Range manually.

① Press “ ” or “ ” to select “DC”

② Press “ ” or “ ” to adjust the range.See figure 3-6.

Figure 3-6

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 Chapter 4 System Tips and Troubleshooting

4.1 Prompting Message

Trigger level limit:
Horizontal position limit:
Voltage range limit:
USB storage device is connected successfully:

4.2 Troubleshooting

1. If you press the " " button oscilloscope screen remains dark, no display, follow these

steps:
(1) Open the instrument battery cover, check whether the power supply or battery power
leakage, flatulence, etc.
(2) After the inspection is completed, restart the instrument.
(3) If you still can not properly use the product, please contact us.

2. After signal acquisition, signal waveform screen does not appear, please follow these steps:
(1) Check whether the probes are correctly connected to the signal line connection.
(2) Check whether the signal cable is properly connected to the BNC.
(3) Check whether the probe is properly connected with the analytes.
(4) Check whether the analyte signal is generated.
(5) Re-acquire the signal again.

3. Measured voltage amplitude value is 10 times greater than the actual value, or 10 times
smaller:
Check whether the channel attenuation factor of the probe matches the actual attenuation ratio.

4. There waveform display, but not stable:

Check the trigger source trigger menu settings are consistent with the actual signal input
channels.

5. Press "RUN" button without any display:

Trigger checks whether the trigger menu in the "normal" or "Single" and the trigger level has
been exceeded if the signal range. If it is, the trigger level is centered, or set the trigger mode to
"AUTO" file.

6.Stepped waveform display:

This phenomenon is normal. When the base level is too low may stall, increasing the level of
the base when the horizontal resolution can be increased to improve the display.

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 Chapter 5 service and support

5.1 Warranty Description

We guarantee the production and sale of its products, the date of shipment from
authorized dealers within a year, does not appear in material and workmanship defects.
As specified in the detailed product warranty proved defective, we will provide repair or
replacement service.
In addition to this summary, or use the warranty provision of the warranty, we do not
make any other warranties, express or implied. The Company's indirect, special or
damage arising there from shall not be liable.

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 Appendix A: Technical Specifications
Unless otherwise noted, all technical specifications are used for attenuation switch setting
10X probes and these series oscilloscopes.To verify that the oscilloscope meets
specifications, the oscilloscope must meet the following conditions:
 The oscilloscope must be more than thirty minutes of continuous operation within
the specified operating temperature.
 If the operating temperature changes by more than 5 degrees, will have to be
corrected, unless labeled "typical" outside the specifications, all specifications are
guaranteed.
 Oscilloscope must be within the factory calibration interval.

Technical Specifications

import
Input coupling AC、DC
Input impedance 1MΩ 25pF
The maximum 40V (probe X1); 400V (probe X10) can be measured 220V voltage;
input voltage (probe X100) 2000V voltage can be measured
Probe 1X、10X
attenuation
Set the probe 1X、10X、100X
attenuation
factor
Signal
acquisition
system
Sampling Real-time sampling, random sampling
Method
Memory depth 4K
Acquisition Sample, Peak Detect
Mode
Vertical System
Vertical 10mV-5V (Probe 1X) 100mV-50V (probe 10X) (1,2.5,5 step)
Sensitivity
Vertical accuracy +/-3%
Vertical 8bit
resolution
Bandwidth 10MHz
Horizontal
Systems
Real-time 100 MSa/s

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 sampling rate
Horizontal scan 25nS/div-5S/div
range
Trigger System
Mode Auto, Normal and Single
Type Rising edge trigger, falling edge trigger
Automatic Support (20Hz-10MHz)
detection
Measurement
System
Cursor Support time and voltage cursors
measurements
Measurements Manual
Measure Peak and frequency
Equipment
Screen 3.2-inch, 16-bit true color, TFT, 320 * 240
3000 + mA lithium battery (single cell about four hours of continuous
Battery
work)
Size 115 * 180 * 35 (mm)

Appendix B: ADO 102/ADO 104 oscilloscope accessories

ADO 102 oscilloscope: ADO 104 oscilloscope:
- User manual (CD) - User manual (CD)
- Certificate - Certificate
- A dedicated high-voltage - Two dedicated
ignition probe (Found 1: 3000) high-voltage ignition probe (1: 3000)
- 1: 1/10: 1 probe two - 1: 1/10: 1 probe four
- Multimeter table pen one pair - Multimeter table pen one pair
- Four broken wire needle - Six broken wire needle
- Lithium battery × 2 - lithium batteries × 2
- Battery Charger - Battery Charger
- Portable Kit - Portable Kit
- USB cable one - USB cable one

Appendix C: routine maintenance and cleaning

Routine maintenance
Do not store or leave the instrument in where the LCD display will be exposed to direct
sunlight for a long time.
Do not allow sprays, liquids and solvents touches on the instrument or probe, to avoid
damage to the instrument and probe.

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Please charge the battery in the battery is finished using the situation.

Clean
Regularly inspect the instrument and probe according to operating conditions.
Please follow the steps below to clean the outer surface of the instrument:
1.Use external dust soft cloth to wipe the instrument and probe. When cleaning the LCD
screen, be careful not to scratch the clear plastic protective screen.
2.Use a damp but not dripping, soft cloth to wipe the instrument, please remove the
battery before wiping. Use a mild detergent and water to scrub. Do not use any corrosive
chemicals, to avoid damage to the instrument and probe.

WARNING: Before reinstalling the battery, make sure the instrument is completely
dry to avoid water damage to equipment caused by electrical short circuit.

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