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22 

Chapter 3 Automotive Test 

This chapter contains most of the test applications of ATO automotive oscilloscopes in automotive circuits. The 
purpose is to help users quickly troubleshoot and locate automotive electronics faults. It is recommended that you 
read this chapter carefully to understand the general operation and use of automotive oscilloscopes.   

3.1

 

Charging/Start Circuit

 

All electrical equipment of the car is powered by a power system composed of an on-board generator and a battery. 
In this power system, the generator supplies power to the electrical equipment and charges the battery when the 
generator is working normally. When the power generated by the generator is less than the power consumed by the 
on-board electrical equipment, the battery participates in power supply to make up for its deficiency. When the 
engine is working normally, it is necessary to ensure sufficient charging time for the battery to ensure that it does 
not lose power. When the generator is working normally, whether to charge the battery can be indicated from the 
charging  indicator  on  the  instrument  panel.  Due  to  the  large  speed  range  of  the  engine,  the  generator  must  be 
equipped with a voltage regulator to ensure that its rated voltage is not affected by the speed and current. The power 
supply when the engine starts is completely provided by the battery, so the battery must ensure that there is enough 
capacity to start the engine smoothly. The ATO1000 series car-specific oscilloscope can test the charging circuit and 
the starting circuit to test whether the charging/starting circuit of the car is working properly. The specific operations 
are as follows:

：

 

 

Click the icon 

  in the lower right corner of the oscilloscope to display the screen shown in Figure 3-1

：

 

   

Figure 3-1 Charging/Start Circuits 

Содержание ATO1000 Series

Страница 1: ......

Страница 2: ...Version Info Version Date Remarks V1 0 2020 06 ...

Страница 3: ... read this manual carefully before use and particularly pay attention to the Safety Precautions If you have read this manual please keep it properly for future reference The materials contained in this document are provided as present and are subject to change in future versions without notice ...

Страница 4: ...ERATION 16 2 9 CONNECT PROBE TO THE OSCILLOSCOPE 16 2 10 USE AUTO 17 2 11 LOAD FACTORY SETTINGS 19 2 12 USE AUTO CALIBRATION 19 2 13 PASSIVE PROBE COMPENSATION 19 2 15 MODIFY THE LANGUAGE 21 CHAPTER 3 AUTOMOTIVE TEST 22 3 1 CHARGING START CIRCUIT 22 3 1 1 12V Charging 23 3 1 2 24V Charging 24 3 1 3 Alternator AC Ripple 24 3 1 4 Ford Focus Smart Generator 25 3 1 5 12V Start 26 3 1 6 24V Start 28 3 ...

Страница 5: ... 3 Primary Secondary 62 3 5 NETWORKS 63 3 5 1 CAN High CAN Low 63 3 5 2 LIN Bus 65 3 5 3 FlexRay Bus 66 3 5 4 K line 67 3 6 COMBINATION TESTS 69 3 6 1 Crankshaft Camshaft 69 3 6 2 Crankshaft Primary ignition 70 3 6 3 Primary ignition Injector voltage 71 3 6 4 Crankshaft Camshaft Injector Secondary Ignition 72 3 7 PRESSURE TEST 73 3 7 1 Intake Manifold 73 3 7 2 Exhaust Tailpipe 74 3 7 3 In Cylinder...

Страница 6: ... 6 10 SERIAL BUS TRIGGER 118 CHAPTER 7 ANALYSIS SYSTEM 119 7 1 AUTOMATIC MEASUREMENT 120 7 2 FREQUENCY METER MEASUREMENT 124 7 3 CURSOR 124 CHAPTER 8 SCREEN CAPTURE MEMORY DEPTH AND WAVEFORM STORAGE 128 8 1 SCREEN CAPTURE FUNCTION 129 8 2 VIDEO RECORDING 129 8 3 WAVEFORM STORAGE 130 CHAPTER 9 MATH AND REFERENCE 135 9 1 DUAL WAVEFORM CALCULATION 136 9 2 FFT MEASUREMENT 138 9 3 REFERENCE WAVEFORM CA...

Страница 7: ... BUS TRIGGER AND DECODE 174 13 3 CAN BUS TRIGGER AND DECODE 178 13 4 SPI BUS TRIGGER AND DECODE 181 13 5 I2C BUS TRIGGER AND DECODE 185 13 6 ARINC429 BUS TRIGGER AND DECODE 188 13 7 1553B BUS TRIGGER AND DECODE 192 CHAPTER 14 REMOTE CONTROL 195 14 1 HOST COMPUTER PC 196 14 1 1 Installation of Host Computer Software 196 14 1 2 Connection of Host Computer 196 14 1 3 Main Interface Introduction 197 1...

Страница 8: ...Table of Contents v ANNEX 210 ANNEX A TECHNICAL SPECIFICATIONS 210 ANNEX B MAINTENANCE OF ATO OSCILLOSCOPE 214 ANNEX C ACCESSORIES 215 ...

Страница 9: ...rminal ratings To avoid fire or shock hazard observe all rating and markings on the product Consult the product manual for further information of ratings before making connections to the product User correct probes To avoid excessive electric shock use only correct rated probes for any measurement Disconnect AC power The adapter can be disconnected from AC power and the user must be able to access...

Страница 10: ...0Vrms The transient overvoltage exists in a circuit isolated from the main power supply TO1000 series digital oscilloscopes are designed to safely withstand occasional transient overvoltages up to 1000Vpk Do not use this equipment to measure in a circuit where the instantaneous overvoltage exceeds this value 1 2 Safety Terms and Symbols Terms in the manual These terms may appear in this manual War...

Страница 11: ...input port is connected to a circuit with the peak voltage higher than 42V or the power exceeding 4800VA to avoid electric shock or fire User only insulated voltage probes supplied with the instrument or the equivalent product indicated in the schedule Before use inspect voltage probes test leads and accessories for mechanical damage and replace when damaged Remove voltage probes and accessories n...

Страница 12: ...nce power on and off oscilloscope settings and related calibration requirements of the ATO series oscilloscope Inspect package contents Use bracket Rear panel side panel Front panel Power on off the oscilloscope Understand the oscilloscope display interface Introduction to basic operations of oscilloscope Mouse operation Connect probe to the oscilloscope Use auto Use factory settings Use auto cali...

Страница 13: ...complete If the accessories are missing or damaged please contact Micsig s agent or local office 3 Inspect the instrument If any damage to oscilloscope is found by the appearance inspection or it fails to pass the performance test please contact Micsig s agent or local office If the instrument is damaged due to transportation please retain the package and contact the transportation company or Mics...

Страница 14: ...Chapter 2 Quick Start Guide of Oscilloscope 11 2 3 Rear panel side panel Figure 2 2 Rear panel side Panel 2 4 Front Panel Figure 2 3 Front Panel of Tablet Oscilloscope ...

Страница 15: ...al Measure Touch to turn on off measurement menu Trigger Touch to turn on off trigger menu Home Touch to return to the homepage Table 2 1 Description of Oscilloscope Front Panel 2 5 Power on off the Oscilloscope Power on off the oscilloscope First time start Connect power adapter to the oscilloscope and the oscilloscope should not be pressed on the adapter cable Press the power button to start the...

Страница 16: ...in the following chapters The following items may appear on the screen at a given time but not all items are visible The oscilloscope interface is shown in Figure 2 4 Figure 2 4 Oscilloscope Interface Display No Description 1 Micsig logo 2 Oscilloscope status including RUN STOP WAIT AUTO 3 Trigger point 4 Sampling rate memory depth 5 The area in indicates the position of waveform displayed on the ...

Страница 17: ...and REF channel 16 Automotive diagnostic software presets 17 Current channel selection Click to pop up the current channel switching menu to switch the current channel 18 Horizontal time base control icon Tap the left right time base buttons to adjust the horizontal time base of the waveform Tap the time base to turn on the time base knob and turn the knob to adjust the time base 19 Quick save Tap...

Страница 18: ...ic Operations of tBook mini series Oscilloscope Tap Tap button on the touch screen to activate the corresponding menu and function Tap any blank space on the screen to exit the menu Swipe Single finger swipe to open close menus including main menu shortcut menu button and other channel menu operations For example the main menu is opened as shown in Figure 2 6 The closing method is the opposite of ...

Страница 19: ...t Vertical Position for details 2 8 Mouse Operation Connect the mouse to the USB Host interface then operate the oscilloscope with the mouse The menu will pop up with the right mouse button The left mouse button has the same function as the finger touch and the horizontal time base can be adjusted by rolling the mouse wheel The right mouse button menu is shown in Figure 2 7 Figure 2 7 Mouse Cursor...

Страница 20: ...the threshold level can be opened or closed automatically according to the set threshold level The threshold level can be settable Source can be automatically triggered and the triggered source channel can be automatically set to select priority to the current signal or to the maximum signal Open the main menu Tap Auto to open the auto set menu including channel open close setting threshold voltag...

Страница 21: ...t various parameters including vertical scale horizontal time base trigger level etc When the signal is connected these parameters will automatically change and the signal does not need to be operated again after the change The oscilloscope will automatically recognize and make the appropriate changes Auto range Turn the auto range function on or off Vertical scale Turn on the vertical scale autom...

Страница 22: ... in red and after calibrating is finished the word in red disappears When the temperature changes largely the auto calibration function can make the oscilloscope maintain the highest accuracy of measurement Auto calibration should be done without probe Auto calibration process takes about two minutes If the temperature changes above 10 we recommended users perform the auto calibration 2 13 Passive...

Страница 23: ... or manually adjust the waveform vertical sensitivity and horizontal time base Observe the shape of the waveform see Figure 2 13 Figure 2 13 Probe Compensation If the waveform on the screen is shown as under compensation or over compensation please adjust the trimmer capacitor until the waveform shown on the screen as correct compensation The probe adjustment is shown in Figure 2 14 ...

Страница 24: ... 4 of a 4 channel oscilloscope 7 Repeat this step for each channel Warning Ensure the wire insulation is in good condition to avoid probe electric shock while measuring high voltage Keep your fingers behind the probe safety ring to prevent electric shock When the probe is connected a voltage source do not touch metal parts of the probe head to prevent electric shock Before any measurement please c...

Страница 25: ...ke up for its deficiency When the engine is working normally it is necessary to ensure sufficient charging time for the battery to ensure that it does not lose power When the generator is working normally whether to charge the battery can be indicated from the charging indicator on the instrument panel Due to the large speed range of the engine the generator must be equipped with a voltage regulat...

Страница 26: ...lamp and clamp the current clamp to the output power line of the generator The alternator provides power to the vehicle There is little difference between different manufacturers The charging voltage is generally between 13 5V and 15 0V It is not good if it is too large or too small The output current of the generators of different models of different manufacturers is not the same so it needs to b...

Страница 27: ...whether the charging process is normal Use a BNC to banana cable one end is connected to the oscilloscope channel 1 and the other end is clamped between the positive and negative electrodes of the battery the red wire is connected to the red clip Connect the positive pole and connect the black wire to the black clip to the negative pole Start the vehicle and start the test At this time the oscillo...

Страница 28: ...d the red connector is connected to the feedback of the generator to the engine ECM with a stinger Use a current clamp of 600A and above connect the BNC of the current clamp to channel 3 turn on the switch of the current clamp and clamp the current clamp to the output power line of the generator Start the vehicle and start the test Among them the control signal of ECM to the generator on channel 1...

Страница 29: ... of the battery the red wire connects to the red clamp to the positive pole and the black wire to the black clamp to the negative pole Use a current clamp above 600A connect the BNC of the current clamp to channel 2 turn on the switch of the current clamp and clamp the current clamp to the positive or negative power line of the battery You need to clamp the entire positive or negative line Stay pa...

Страница 30: ...pter 3 Automotive Test 27 Figure 3 6 12V Start The following figure is the actual measurement diagram of the starting voltage and current of Mazda in a certain year Figure 3 7 Starting voltage and current ...

Страница 31: ...uct a current test on the starting process of the car automobile or diesel car observe whether the current waveform is normal use a current clamp of 600A or above and connect the BNC of the current clamp to channel 2 On turn on the switch of the current clamp and clamp the current clamp to the positive or negative power line of the battery You need to clamp the entire positive or negative line Pay...

Страница 32: ...t combustion ratio Another example is a vehicle speed sensor Its function is to convert the vehicle speed into a voltage signal and send it to the trip computer The trip computer controls the shift timing to achieve upshift or downshift With the continuous development of cars in the direction of intelligence and new energy the number of sensors on the car body has shown a trend of sharp increase a...

Страница 33: ... same time Shown as Figure 3 10 Figure 3 10 ABS Wheel Speed Sensor 3 2 2 Accelerator pedal The accelerator pedal is the signal of the automobile accelerator There are generally 2 groups each pair of 3 wires power signal and ground Divided into analog analog and analog digital Analog analog signal is two analog signals usually there are two ways one is deviation signal one signal is from 0 3V 4 8V ...

Страница 34: ...TO oscilloscope to test the accelerator pedal sensor the specific operation is shown in Figure 3 11 Figure 3 11 Accelerator Pedal The following picture is the actual measurement diagram of the accelerator pedal sensor of a certain model ...

Страница 35: ...l type has a digital circuit inside the sensor The output signal is a square wave The frequency is used to represent the air flow A higher frequency means a higher air intake Use a BNC to banana cable and connect one end to channel 1 of the oscilloscope The black plug on the other end is grounded and the red connector is connected to the signal wire of the air flow sensor with a needle Start the v...

Страница 36: ...ctive sensor output is a sine wave signal or square wave signal generally 2 wire AC excitation The output of the type sensor is multiple sine waves there is a missing piece at the end of the camshaft so that the signal changes and the position of the No 1 cylinder is judged at the missing place generally 2 wire Use a BNC to banana cable connect one end to channel 1 of the oscilloscope the other en...

Страница 37: ... output voltage of this sensor is 3 4V when the vehicle is cold As the vehicle starts the temperature rises and the voltage gradually decreases It is generally 1V during normal operation but with As the vehicle temperature rises when the vehicle temperature reaches 40 50 degrees the ECM will switch the voltage to make the sensor voltage rise rapidly to 3 4V so as to achieve more accurate voltage o...

Страница 38: ...ne wave there are missing teeth on the disk and the sine wave will be missing in the missing teeth this kind of sensor is generally 2 wire the Hall type output is usually a square wave Generally 3 wire power signal and ground Use a BNC to banana cable one end is connected to channel 1 of the oscilloscope the other end is grounded with the black plug and the red connector is connected to the signal...

Страница 39: ...36 Figure 3 16 Crankshaft position sensor The figure below is the actual measurement of the crankshaft position sensor inductive of a certain model ...

Страница 40: ...scope to test the distributor sensor divided into two types Hall effect and induction The specific operation is shown in Figure 3 17 Figure 3 17 Distributor 3 2 8 Fuel pressure Fuel pressure signals generally appear on high pressure fuel rails or sensors or common rail diesel vehicles and the pressure is relatively high Generally the fuel pressure is proportional to the output voltage and the volt...

Страница 41: ...not to cause excessive torque to avoid damage to the sensor There may be several reasons for knocking the ignition angle is too advanced too much carbon deposits in the combustion chamber the engine temperature is too high the air fuel ratio is too lean the fuel is not clean enough and the fuel octane number is too low Use a BNC to banana cable connect one end to channel 1 of the oscilloscope the ...

Страница 42: ...Chapter 3 Automotive Test 39 Figure 3 19 Knock Sensor test The following picture is the actual measurement diagram of the knock sensor of a certain model ...

Страница 43: ...ble one end is connected to channel 1 of the oscilloscope the other end is grounded with the black plug and the red connector is connected to the signal line pre oxygen of the oxygen sensor with a needle Use a BNC to banana cable connect one end to channel 2 of the oscilloscope ground the black plug on the other end and use a needle to connect the red connector to the signal line of the oxygen sen...

Страница 44: ...he analog signal of a gasoline engine when the throttle is closed or the engine is turned off the output voltage is 0 and the output is generally about 1V at idling speed it may be slightly higher or lower After quickly depressing the accelerator the throttle opens and the voltage rises rapidly Achieve above 4 5V For the analog signal of the diesel engine the voltage is between 1 5 2 0V at idling ...

Страница 45: ...ut inductive signal sine wave Use a BNC to banana cable connect one end to channel 1 of the oscilloscope the other end of the black plug is grounded and the red connector is connected to the signal line of the vehicle speed sensor with a needle Lift the vehicle as a whole or lift the driving wheels or connect the signal to a road test start the vehicle put in gear to rotate the wheels and observe ...

Страница 46: ...lloscope the other end of the black plug is grounded and the red connector uses a needle to connect the signal line of the throttle position sensor or the throttle switch signal 1 Use a BNC to banana cable connect one end to channel 2 of the oscilloscope the other end of the black plug is grounded and the red connector uses a needle to connect the signal line of the throttle position sensor or the...

Страница 47: ...44 Figure 3 24 Throttle Position Sensor test The following figure is the actual measurement diagram of the throttle position sensor of a certain model Figure 3 25 Throttle Position Sensor Diagram ...

Страница 48: ...and causing pollution Use a BNC to banana cable one end is connected to channel 1 of the oscilloscope the other end of the black plug is grounded and the red connector is connected to the ground wire of the canister solenoid valve with a needle tip Use ATO oscilloscope to test the vehicle speed sensor the specific operation is shown in Figure 3 26 Figure 3 26 Carbon canister solenoid valve test Th...

Страница 49: ...mbient temperature is low or the engine temperature is relatively low when starting the vehicle the glow plug will be turned on first and after the preheating light goes out the vehicle can be started to make the engine idling Use a current clamp connect one end to channel 1 of the oscilloscope and clamp the other end to the power cord of the glow plug Pay attention to the direction of the current...

Страница 50: ...mbustion temperature so as to reduce the emission of nitrogen oxides in the exhaust gas and achieve the goal of environmental protection Use a BNC to banana cable one end is connected to channel 1 of the oscilloscope the other end is grounded with the black plug and the red connector is connected to the ground wire of the EGR solenoid valve with a needle Use ATO oscilloscope to test the EGR soleno...

Страница 51: ...d uniform current change in each sector Use a current clamp connect one end to channel 1 of the oscilloscope and clamp the other end to the power line of the fuel pump Pay attention to the direction of the current You can also use the corresponding fuse replace it with a extension cord and clamp on the cord of the current clamp Use ATO oscilloscope to test the electronic fuel pump the specific ope...

Страница 52: ...Chapter 3 Automotive Test 49 Figure 3 30 Electronic fuel pump test ...

Страница 53: ...e air duct to adjust the engine idle speed For gasoline vehicles generally when the engine is cold started The engine speed will rise rapidly to about 1200 rpm When the engine reaches the normal operating temperature the idle speed will gradually decrease and finally stabilize at the preset value Use ATO oscilloscope to test the idle speed control valve the specific operation is as shown in Figure...

Страница 54: ...erally it is a 2 wire device the power supply voltage is 12V and the ECM controls the grounding Limited by cost some vehicles are equipped with single point fuel injectors The single point fuel injection pressure is low and the airflow from intake pipe can make a mist of fuel for better combustion Use ATO oscilloscope to test the fuel injector the specific operation is shown in Figure 3 32 Figure ...

Страница 55: ...pressure at high speed injection time is short volume is large There are mainly Bosch common rail injectors Delphi injectors CDi version 3 system injectors piezoelectric injectors Volkswagen Audi s PD system Volkswagen Audi s piezoelectric PD etc on the market Use ATO oscilloscope to test the fuel injector diesel engine the specific operation is shown in Figure 3 33 Figure 3 33 injector diesel eng...

Страница 56: ...ly controls the amount of high pressure oil entering the oil return system thereby increasing or decreasing the fuel pressure of the common rail pipe Use a BNC to banana cable connect one end to channel 1 of the oscilloscope the other end of the black plug is grounded and the red connector is pierced into the end of the pressure regulator signal line with a needle probe Use ATO oscilloscope to tes...

Страница 57: ...he high pressure fuel pump The more fuel enters the piston chamber of the high pressure fuel pump the higher the pressure which increases the pressure in the common rail fuel pipe on the contrary the lower the pressure Generally two wires signal power and ground Use ATO oscilloscope to test the flow control valve the specific operation is shown in Figure 3 35 Figure 3 35 Quantity Flow control valv...

Страница 58: ...ECM controls the throttle servo motor according to the accelerator pedal signal to realize the throttle opening control which is then monitored by the throttle position sensor and transmits the signal back to the ECM to achieve closed loop control Use ATO oscilloscope to test the throttle servo motor the specific operation is shown in Figure 3 36 Figure 3 36 Throttle servo motor test ...

Страница 59: ...ierce the red connector into the signal wire of the fan terminal use a current clamp connect one end to channel 2 of the oscilloscope and clamp the other end to it Pay attention to the direction of the current on the fan s power cord If you need to test the current connect a current clamp Use ATO oscilloscope to test the cooling fan the specific operation is shown in Figure 3 37 Figure 3 37 Variab...

Страница 60: ...ine speed so as to achieve the best combustion efficiency and improve fuel economy Use a BNC to banana cable connect one end to channel 1 of the oscilloscope the other end of the black plug is grounded and the red connector is pierced into the variable valve timing signal line with a needle tip Use the ATO oscilloscope to test the variable valve timing divided into single and double timing the spe...

Страница 61: ...58 Figure 3 39 Variable valve timing test The following picture is the actual measurement diagram of the Variable valve timing of a certain model ...

Страница 62: ...ntact type and capacitive type to the system with no distributor and one coil per cylinder that is commonly used today Use a P130A probe connect one end to channel 1 of the oscilloscope and connect the other end to the ground with the black clip Use a stinger to pierce the ground wire of the primary coil and hook the probe to the metal needle of the stinger use a current clamp to connect the other...

Страница 63: ...60 The figure below is the actual measurement of the primary ignition of a certain model Figure 3 41 Primary ignition actual test ...

Страница 64: ...stributor ignition system distributorless ignition system invalid spark COP independent ignition multi COP integrated unit ignition Use the ATO oscilloscope to test the secondary ignition coil must use the secondary ignition probe the voltage KV coil output voltage and voltage mv can be tested separately to help users troubleshoot possible faults The specific operations are as follows Figure 3 42 ...

Страница 65: ...e end to channel 2 of the oscilloscope and test the other end according to different engine ignition types UseATO oscilloscope to simultaneously test the three indicators of the secondary ignition coil Synchronize voltage test of the primary and the secondary coil Primary coil voltage and current and the voltage of the secondary coil use the secondary ignition probe the specific operation is shown...

Страница 66: ...e signals are in a differential relationship The CAN bus is divided into idle and transmission states When idle CAN high and CAN low are both 2 5V When transmitting signals the high level of CAN high is 3 5V and the low level is 2 5V the high level of CAN low is 2 5 V the low level is 1 5V Use a BNC to banana cable one end is connected to channel 1 of the oscilloscope the other end of the black pl...

Страница 67: ...64 Figure 3 45 CAN BUS Test The figure below is the actual measurement of the CAN bus of a certain model ...

Страница 68: ...dows mirrors air conditioners electronic seats etc LIN is single wired has high level and low level when transmitting data the high level is 12V and the low level is 0V The LIN bus generally has a sync header followed by data If there is only a signal from the sync header it means that the device has not responded Use the ATO oscilloscope to test the LIN bus the specific operation is shown in Figu...

Страница 69: ...oth wires will have a voltage of 1V up and down and the voltages on the two wires are opposite Use the P130A probe one end is connected to channel 1 of the oscilloscope and the other end is grounded with the black clip Use a piercing needle to pierce the easy to test Flexray bus positive plug and hook the probe to the metal needle of the puncture needle Use the P130A probe connect one end to chann...

Страница 70: ...K Line is very different from CAN Bus and most communication networks For example the CAN Bus network does not have a central or master ECM all ECMs are equal because they can send and receive information along the network The K line has only one line and the information is transmitted in binary format and the pulse voltage signal is transmitted Divided into 0 and 1 0 is high level 12V or above 1 ...

Страница 71: ...68 Figure 3 49 K line test ...

Страница 72: ...s 3 6 1 Crankshaft Camshaft Use a BNC to banana cable one end is connected to channel 1 of the oscilloscope the other end is grounded with a black plug and the red connector is pierced into the signal line of the crankshaft sensor with a needle use a BNC to banana cable one end is connected to channel 2 of the oscilloscope and the other black end is grounded the red connector is pierced into the s...

Страница 73: ... the oscilloscope and the other end is grounded with a black clip Use a needle to pierce the signal line at the end of the injector plug and hook the probe to the metal needle of the needle Use a P130A probe connect one end to channel 2 of the oscilloscope and the black clip on the other end to ground Use a needle to pierce the ground wire of the primary coil and hook the probe to the metal needle...

Страница 74: ...unded with a black clip Use a needle to pierce the signal line at the end of the injector plug and hook the probe to the metal needle of the needle Use the P130A probe one end is connected to channel 2 of the oscilloscope and the other end is grounded with the black clip Use a puncture needle to pierce the ground wire of the primary coil and hook the probe to the metal needle of the puncture needl...

Страница 75: ...a P130A probe one end is connected to channel 3 of the oscilloscope and the other end is grounded with a black clip Use a needle to pierce the signal line at the end of the injector plug and hook the probe to the metal needle of the needle Use a suitable secondary ignition probe connect one end to channel 4 of the oscilloscope and connect the other end to the secondary ignition part of the vehicle...

Страница 76: ... by the pressure probe Therefore the ATO oscilloscope can be tested by the pressure probe The pressure values are all within a certain range when working normally When the values are abnormal it can help users to troubleshoot 3 7 1 Intake Manifold Use ATO oscilloscope to test the pressure and voltage of the intake manifold under the five operating conditions of the engine show as below Figure 3 54...

Страница 77: ... 3 7 2 Exhaust Tailpipe Use ATO oscilloscope to test the exhaust tailpipe pressure and voltage under the two operating conditions of the engine show as below Figure 3 55 Figure 3 55 Exhaust Tailpipe Test ...

Страница 78: ...Cylinder Use ATO oscilloscope to test the pressure of the cylinder of the engine under 3 working conditions show as below Figure 3 56 Figure 3 56 In Cylinder Test The figure below is the actual cylinder pressure of Mazda 6 in a certain year ...

Страница 79: ...76 Figure 3 57 Mazda 6 Cylinder internal pressure measurement ...

Страница 80: ... Test 77 3 7 4 In Crankcase Use ATO oscilloscope to test the pressure and voltage of the crankcase under two working conditions The specific operation is shown in Figure 3 58 Figure 3 58 Crankcase Pressure and Voltage test ...

Страница 81: ... recommended that you read this chapter carefully in order to understand the setting function and operation of the horizontal system of the ATO oscilloscope Move the waveform horizontally Adjust the horizontal time base time div Pan and zoom single or stopped acquisitions Roll XY Zoom mode Figure 4 1 Horizontal system ...

Страница 82: ...he key and select time base to quickly move the trigger position of the current channel to the center position in the horizontal direction Figure 4 2 Move the Waveform Horizontally on the Screen 4 2 Adjust the Horizontal Time Base time div Method 1 Soft Keys Tap buttons to adjust the horizontal time base of all analog channels current channels Tap button to increase the horizontal time base tap bu...

Страница 83: ...2 Time Base Knob Tap to turn on the time base knob see Figure 4 4 horizontal time base knob and then turn the knob to adjust the appropriate time base The time base shown on the left is the currently selected time base Figure 4 4 Horizontal Time Base Knob ...

Страница 84: ... YT mode the relative relationship between vertical voltage and horizontal time is displayed Y axis represents the voltage X axis represents the time and the waveform is displayed after triggering waveform displayed from left to right Note When the time base is large such as 200ms and above sometimes the waveform will not be displayed for a long time this is because in YT mode the waveform must be...

Страница 85: ...es below 5 Hz ROLL mode is defaulted as open When the time base is greater than 100ms it automatically enters the ROLL mode If the signal to be triggered under a large time base needs to be viewed turn off the ROLL mode Roll mode on and off In the main menu tap the soft key In the General option you can turn the roll mode on and off refer to Figure 4 7 When the roll mode is on and the time base is...

Страница 86: ...in XY mode Figure 4 8 XY Mode XY Mode Example This exercise shows the usual practice of XY display mode by measuring the phase difference between two signals of the same frequency using the Lissajous method 1 Connect sine wave signals to CH1 and connect sine wave signals of the same frequency and different phases to CH2 2 Press Auto set button tap Display in the main menu then select XY in Time Ba...

Страница 87: ...al and the y axis Record the Δy value again Figure 4 10 Phase Difference Measurement and Using the Cursor 7 The following formula is used to calculate the phase difference For example if the first Δy value is 9 97V the second Δy value is 5 72V 4 5 Zoom Mode Zoom is a horizontally expanded version of the normal display Open the zoom function the display is divided into two parts see Figure 4 11 Zoo...

Страница 88: ...Zoom to view a portion of the normal window that is horizontally expanded to learn more about signal analysis Zoom on off 1 Open the pull up menu and tap button to turn the zoom function on off 2 Put three fingers on the touch screen at the same time slide down to open zoom mode slide up to turn off zoom mode Figure 4 12 shows the operation ...

Страница 89: ...drag the box in the normal window to quickly locate the waveform to be viewed Note 1 The minimum time base is displayed in the normal window when the waveform in the screen is exactly within the memory depth If the current time base is smaller than the minimum time base in the normal window at the current memory depth when the zoom window is opened the time base in the normal window is automatical...

Страница 90: ... close channel analog channel math function set the current channel Adjust vertical sensitivity Adjust vertical position Open channel menu Measured signal Set bandwidth filter Waveform invert Set probe type Set probe attenuation coefficient The figure below shows the CH1 Channel Menu displayed after opening the CH1 channel menu Figure 5 1 Channel Menu Display Interface The ground level of each dis...

Страница 91: ...hat is preferentially displayed on the uppermost layer is called the current channel The channel indicator for the current channel is solid and the channel indicator for the non current channel is hollow as shown in Figure 5 2 Figure 5 2 Current Channel and Non Current Channel The display content of the oscilloscope channel display interface includes the sampling mode vertical scale vertical scale...

Страница 92: ... the button to light it up as shown in Figure 4 5 Tap the button in the menu to switch the current channel When this function is opened a the current channel may be switched in the channel switching menu b the current channel menu can be moved anywhere on the screen c only the open channel is displayed in the channel switching menu d when the math or reference waveform is opened the current channe...

Страница 93: ...cal sensitivity range of 1 1 probe is 1mV div 10V div optionally minimum at 500uV div 5 3 Adjust Vertical Position The method of adjusting vertical position is as follows 1 Rough adjustment In the waveform display area hold the waveform and put one finger to slide up and down for changing the vertical position of the waveform 2 Fine adjustment After the waveform moves vertically click the fine adj...

Страница 94: ...on on the right side of Measured signal to select two channel coupling modes DC and AC DC DC coupling Both the DC component and the AC component of the measured signal can pass and can be used to view waveforms as low as 0 Hz without large DC offset AC AC coupling Measured DC signal is blocked and only the AC component can be allowed to pass and used to view waveforms with large DC offsets The osc...

Страница 95: ...g Note This setting is only valid for the current channel To switch the current channel just tap the channel icon channel indicator icon or the horizontal position pointed to by the channel indicator icon to switch directly without exiting the menu ...

Страница 96: ...ies to pass Low Pass Only allow signals that are lower than the upper limit of the current set frequency to pass The frequency range that can be set for the low pass filter is 30kHz 100MHz The difference in bandwidth limitation can be visually expressed through the waveform The 100M bandwidth is shown in Figure 5 10 and the low pass bandwidth is shown in Figure 5 11 Figure 5 10 Full 100MHz filter ...

Страница 97: ...the voltage value of the displayed waveform is inverted Inversion affects the way the channel is displayed When using a basic trigger you need to adjust the trigger level to keep the waveform stable Figure 5 12 Before Invert Figure 5 13 After Invert ...

Страница 98: ...Probe Type Probe types are divided into Voltage Current and Pressure Probe type adjustment steps Open channel menu and find the probe type probe type then select Figure 5 14 Voltage Probe Figure 5 15 Current Probe Figure 5 16 Pressure Probe ...

Страница 99: ...ng attenuation ratio must be set on the channel menu to ensure the correctness of the waveform amplitude and measurement result displayed by the oscilloscope Probe attenuation ratio and menu attenuation ratio are shown in the table below Probe attenuation ratio Menu attenuation ratio 0 001 1 1mx 0 002 1 2mx 0 005 1 5mx 0 01 1 10mx 0 02 1 20mx 0 05 1 50mx 0 1 1 100mx 0 2 1 200mx 0 5 1 500mx 1 1 1x ...

Страница 100: ... It is recommended that you read this chapter carefully in order to understand the setting function and operation of the trigger system of the ATO oscilloscope Trigger and trigger adjustment Edge trigger Pulse width trigger Logic trigger Nth edge trigger Runt trigger Slope trigger Time out trigger Video trigger Serial bus trigger ...

Страница 101: ...e waveform according to the condition is Trigger The so called capture waveform is that the oscilloscope grabs a signal and displays it If it is not triggered there is no waveform display What can Trigger be used for 1 The oscilloscope can stably display a periodic signal Figure 6 1 Stably display the periodic signals Figure 6 2 Non Stably Displayed Periodic Signal ...

Страница 102: ...matic oscilloscope trigger is the forced trigger It means that the oscilloscope only grabs a signal segment for display regardless of whether the condition is met or not Automatic forced trigger is set in the menu In the trigger settings there is usually a trigger mode option which can be set as Normal or Auto Normal trigger means trigger after meeting the set condition Automatic trigger is a kind...

Страница 103: ...pe from automatic forced trigger Figure 6 6 shows a conceptual demonstration of the acquisition memory In order to understand the trigger event the acquisition memory can be divided into pre trigger and post trigger buffers The position of the trigger event in the acquisition memory is defined by the time reference point and trigger position horizontal delay settings Figure 6 6 Conceptual Demonstr...

Страница 104: ... side to the time reference point and the delay time is displayed as a negative value the trigger point overlaps with the center line of the waveform display area and the delay time is zero Trigger level Trigger level is the signal voltage corresponding to the set trigger point When the trigger level is changed a horizontal line will appear temporarily on the screen to tell you the level position ...

Страница 105: ...d to stably trigger complex waveforms The trigger hold off time ranges from 200ns 10s The hold off may be used to trigger on repetitive waveforms with multiple edges or other events between waveform repetitions If the shortest time between triggers is known the hold off may also be used to trigger on the first edge For example to obtain stable trigger on the repetitive pulse trigger shown below se...

Страница 106: ...r signal reaches a certain trigger level the set signal is triggered and generated Trigger occurs on either edge of the rising edge indicating icon at the top of the screen falling edge or dual edge and the trigger level can be set to change the vertical position of the trigger point on the trigger edge namely the intersection point of the trigger level line and the signal edge The stable waveform...

Страница 107: ...waveform When the waveform has a large DC offset stable edge triggering can be achieved using AC coupling 3 HFRej High Frequency Hold off Coupling removes high frequency components from the trigger waveform using high frequency hold offto remove high frequency noises or noises from fast system clocks from trigger paths such as AM or FM radio stations 4 LFRej Low Frequency Hold off Coupling removes...

Страница 108: ...e width of signals Trigger Condition T Trigger when the signal pulse width is smaller than pulse width T T Trigger when the signal pulse width is greater than pulse width T T Trigger when the signal pulse width is equal to pulse width T T Trigger when the signal pulse width is not equal to pulse width T Trigger Pulse Width 8ns 10s Set the trigger pulse width Note The error of greater than less tha...

Страница 109: ...positive pulse indication icon and the negative pulse is lower than current trigger level CH1 negative pulse indication icon When triggered on positive polarity pulse if the restrictions are true the trigger will happen on the high to low transition of the pulse when triggered on negative polarity pulse if the restrictions are true the trigger will happen on the low to high transition Figure 6 14 ...

Страница 110: ...tive pulse if it is set as T 80ns the trigger will happen stably only when the pulse width is greater than 80ns Figure 6 16 Trigger Time T 80ns Figure 6 16 Trigger Time T 80ns Equal to the time value For example for positive pulse if it is set as T 80ns the trigger will happen stably only when the pulse width is equal to 80ns Figure 6 17 Trigger Time T 80ns Figure 6 17 Trigger Time T 80ns Not equa...

Страница 111: ...appens when the level between analog channels satisfies a certain logical operation AND OR NAND NOR and the signal voltage reaches the set trigger level and the trigger logic width 8ns 10s Logic trigger menu descriptions are shown in the table below Trigger Option Setting Description Trigger Source CH1 High Set CH1 as high Low Set CH1 as low None Set CH1 as none CH2 High Set CH2 as high Low Set CH...

Страница 112: ...Tap Trigger on the main menu to open the trigger menu select logic trigger in the trigger type and set the logic trigger as follows as shown in Figure 6 20 Logic levels CH1 CH3 High CH2 CH4 Low without reference to the channel of logic operation the level selection is None to avoid interference to the logic operation Logic gate AND Condition Logic time 400ns Figure 6 20 Logic Trigger Setting Menu ...

Страница 113: ...nd adjust the logic time Please refer to the Pulse Width Adjustment section for details 6 5 Nth Edge Trigger When the trigger signal is triggered on the Nth edge after the specified idle time it is Nth edge trigger Menu descriptions of the Nth edge trigger are shown in the table below Trigger Option Setting Description Trigger Source CH1 Set CH1 as trigger signal source CH2 Set CH2 as trigger sign...

Страница 114: ... trigger on Nth edge after idle time Set CH1 to trigger on the 5th rising edge after 500us The steps are as follows 1 Tap Trigger on the main menu to open the trigger menu select Nth edge trigger in the trigger type and set the Nth edge trigger as follows as shown in Figure 6 22 Trigger source CH1 Time 10ms Edge signal rising Nth edge 3 ...

Страница 115: ... signal source CH2 Set CH2 as trigger signal source CH3 Set CH3 as trigger signal source CH4 Set CH4 as trigger signal source Polarity Positive Set signal to trigger on positive runt pulse Negative Set signal to trigger on negative runt pulse Any Set signal to trigger on either positive or negative runt pulse Trigger Condition T Trigger when the signal pulse width is smaller than pulse width T T T...

Страница 116: ... Figure 6 25 Figure 6 25 Positive Negative Slope Time When the trigger signal slope has the hold time 8ns 10s the trigger type on the top of the screen is only the icon and trigger happens when the set condition is reached Slope trigger is suitable for observing sawtooth or triangular waves The slope trigger menu descriptions are shown in the table below Trigger Option Setting Description Trigger ...

Страница 117: ...the signal slope hold time is smaller than upper limit T1 and greater than lower limit T2 Time 8ns 10s Set the trigger signal slope hold time Set CH1 slope status as rise and hold time less than 1ms The steps are as follows 1 Tap Trigger on the main menu to open the trigger menu select the slope trigger in the trigger type and set the slope trigger as follows as shown in Figure 6 26 Trigger source...

Страница 118: ...l source CH2 Set CH2 as trigger signal source CH3 Set CH3 as trigger signal source CH4 Set CH4 as trigger signal source Polarity Positive Select to count time when the rising edge of input signal gets through the trigger level Negative Select to count time when the falling edge of input signal gets through the trigger level Any Select to count time when the rising edge or falling edge of input sig...

Страница 119: ...oltage scales and the appropriate voltage scale can be adjusted as needed to observe the waveform The video trigger menu descriptions are shown in the table below Trigger Option Setting Description Trigger Source CH1 Set CH1 as trigger signal source CH2 Set CH2 as trigger signal source CH3 Set CH3 as trigger signal source CH4 Set CH4 as trigger signal source Polarity Positive Set signal positive p...

Страница 120: ...rising edge of the first tooth pulse found All lines Trigger on all horizontal sync pulses Line 625 line PAL SECAM Trigger on a specified line in odd or even fields 263 odd line 262 even line NTSC 750 line 720P 1125 line 1080I 1080P Set CH1 as trigger channel positive polarity NTSC standard video all fields trigger and the steps are as follows 1 Tap Trigger on the main menu to open the trigger men...

Страница 121: ...he video signal since the digital oscilloscope has multi level gray scale display function different brightness can reflect the frequency of different parts of the signal Experienced users can quickly judge the quality of the signal during the debugging process and find abnormal conditions 6 10 Serial Bus Trigger Please refer to Chapter 14 Serial Bus Trigger and Decode Optional ...

Страница 122: ...ns detailed information on the oscilloscope analysis system It is recommended that you read this chapter carefully in order to understand the setting function and operation of the analysis system of the ATO oscilloscope Automatic measurement Frequency meter measurement Cursor ...

Страница 123: ...enu 2 Select measurement Select the desired measurement item on the measurement menu The selected measurement item is displayed in the Selected Parameters display area below 3 Press button on the key area to quickly close the measurement menu 4 Cancel measurement item In the Selected Parameters display area below measurement menu tap the measurement item to be cleared or tap button to clear all me...

Страница 124: ...other channels as shown in Figure 7 3 click again to turn off all measurements Figure 7 2 Pull up Menu Figure 7 3 All Measurements Period Time of the first complete signal cycle in the waveform Frequency Reciprocal to the cycle time Rise time Time required for the first rising edge of the waveform to rise from the amplitude of 10 to 90 Fall time Time required for the first falling edge of the wave...

Страница 125: ... selected between each channel and math channel There are four edge selections FirstRise FirstFall LastRise LastFall 4 Tap button to confirm Positive duty cycle Measured value of the first cycle in the waveform Positive duty cycle waveform positive pulse width period 100 Negative duty cycle Measured value of the first cycle in the waveform Negative duty cycle waveform negative pulse width period 1...

Страница 126: ... The channel probe type setting is used to set the measurement unit for each input channel to Volts or Amperes Refer to 5 4 4 Set Probe Type High Take 100 in the entire waveform and calculated using either the min max or histogram method Low Take 0 in the entire waveform and calculated using either the min max or histogram method Max Highest positive peak measured over the entire waveform Min High...

Страница 127: ...2 Frequency Meter Measurement Open the main menu tap Frequency Meter to enter the hardware frequency meter setting menu and select the channel to be measured as shown in Figure 7 5 The measured value is displayed in the upper left corner of the screen as shown in Figure 7 6 Figure 7 5 Frequency Meter Measurement Menu Open Figure 7 6 Frequency Meter Measurement 7 3 Cursor Open cursor and place it o...

Страница 128: ... vertical cursors relative to the trigger point 1 X frequency S reading Indicates the quotient of voltage difference of horizontal cursors and Δ time difference of vertical cursors that is the slope of the intersection of the four cursors Vertical cursor On Off and activation Vertical cursor On Off Vertical cursor on Tap cursor icon to open vertical cursors and the icon is on and activated Vertica...

Страница 129: ...less the initial two fingers leave the screen If one finger leaves the screen and the other finger does not leave the current linkage adjustment is continued 3 Open the cursor tap select the cursor item and the cursor will automatically adjust to the center position of the screen on both sides of the horizontal or vertical Horizontal cursor on off and activation Horizontal cursor on off switching ...

Страница 130: ...r 7 Analysis System 127 Figure 7 9 Cursor Measurement Pulse Width In the XY horizontal mode X cursor displays CH1 value V or A and Y cursor displays CH2 value V or A Figure 7 10 In XY Mode Cursor Measurement ...

Страница 131: ...tains detailed information about the oscilloscope s screen capture function and record length It is recommended that you read this chapter carefully in order to understand the storage system of ATO oscilloscopes Screen capture function Video recording Memory depth Waveform storage ...

Страница 132: ...rom the bottom to open the pull up menu Tap the icon to have a screen capture Figure 8 1 Screen Capture Please refer to 12 6 Photo for details on viewing pictures 8 2 Video Recording The video recording function is similar to the screen capture function which can store the display information of the current display to the local or U disk in video format When the U disk is not inserted the file is ...

Страница 133: ... in USB device The file type can be WAV CSV or BIN The oscilloscope provides four reference channels which can be called to load WAV format files into the reference channel and open the reference channel to display the reference waveform Save reference file Slide down from top open main menu and tap to open the menu Save the reference waveform interface of the specified channel as follows ...

Страница 134: ...ss prompt The most recently saved file will be displayed at the top of the called menu Save to Tap the R R1 R2 R3 R4 button to save the current channel waveform directly to the corresponding reference channel and the save success prompt will pop up Back Tap to return to the previous level Method 1 Click the Save button In the Save Reference Waveform menu select the channel waveform to be saved sel...

Страница 135: ...directly to the corresponding reference channel and the save success prompt will pop up The file name is displayed as Ref in the reference channel is the corresponding reference channel name Reference waveform files saved by this method will be overwritten after loading other reference waveforms and cannot be restored Method 3 Click Quick Save button Tap at bottom of the screen to directly save th...

Страница 136: ...unning Min or Max measurements Min and Max values displayed on the measurement results screen may not appear in CSV files Explanation If the oscilloscope sampling rate is 1GSa s sampling will be once every 1ns If the horizontal scaling is set to 10us div the data of 140us will be displayed because there are 14 divisions on screen To find the total number of samples the oscilloscope will perform 14...

Страница 137: ...r of points sampled exceeds 60 000 some extraction method is required The extraction factor used to generate the CSV record is configured to provide the best estimate of all samples represented by each point in the record Therefore Min and Max values do not appear in CSV files ...

Страница 138: ...formation on oscilloscope math operations and reference channels It is recommended that you read this chapter carefully in order to understand the math and reference channel setting functions and operations of the ATO oscilloscope Dual waveform calculation FFT measurement Reference waveform call ...

Страница 139: ...played on the screen the resulting math function will also be clipped Once the math waveform is displayed tap the channel icon to close the source channel for a better view of the math waveform The vertical sensitivity and offset of each channel participating in the math function can be adjusted to facilitate viewing and measuring of the math waveform The math function waveform can be measured usi...

Страница 140: ...its of math function waveform include Math Function Unit V A VV AA W V V V A A A A V Table 9 1 List of Mathematical Units Note If the units of two operation source channels are different and the unit combination cannot be identified the unit of math function will be displayed as undefined Math operators Math operators perform arithmetic operations on the analog input channels Addition or Subtracti...

Страница 141: ...d as amplitude in V Hz or dB Hz on the oscilloscope display screen The reading of the horizontal axis changes from time to frequency Hz while the unit of the vertical axis changes from volt to V or dB Figure 9 3 FFT Window Open FFT 1 Tap on the lower right corner of the screen to enter the second channel selection area Tap the soft key to cycle through the math channel open the math channel menu a...

Страница 142: ...ore or after events with significant differences Hanning window This is the best window type for measuring amplitude accuracy but less effective for resolving frequencies Use Hanning to measure sinusoidal periodic and narrowband random noises This window is used for measuring transients or bursts of signal levels before or after events with significant differences Blackman Harris window This is th...

Страница 143: ...t 0Hz of the waveform to the horizontal center of the screen Horizontal time base scale Select math channel as the current channel tap the time base adjustment button and adjust the horizontal time base scale The horizontal time base is stepped in 1 2 5 and the waveform changes either For FFT measurement the reading of the horizontal axis changes from time to frequency Hz and it no longer shares t...

Страница 144: ...r stored waveforms can be displayed simultaneously wherein the current reference waveform is brighter than non current reference waveforms When there are no waveforms loaded into the reference channel turn on the Call switch to call waveforms Take R1 as an example with operation steps as follows 1 Tap to open the reference menu 2 Tap the Call file box under R1 to open the reference file column 3 C...

Страница 145: ...mes gray 3 Tap to turn off all reference waveforms Reference waveform movement and time base adjustment The horizontal or vertical movement and zoom of reference waveforms are independent of analog channels and the adjustments among different reference waveform channels are also independent of each other To adjust the reference waveform of a channel first set the channel as the current channel and...

Страница 146: ... in order to understand the display and function key setting functions and operations of the ATO oscilloscope Waveform setting Graticule setting Persistence setting Horizontal expansion center Time base mode selection Waveform refresh rate high refresh mode Run Stop and Single SEQ Auto 50 function Measurement Trigger Home In the main menu tap button to enter display settings menu as shown in Figur...

Страница 147: ...ess percentage is adjustable Figure10 3 Graticule Menu Display 10 3 Persistence Setting Open the display menu and tap key to open the persistence settings menu 1 Persistence setting In the persistence setting menu select None None no persistence Auto Auto automatic persistence Normal Normal set the persistence time After selecting the variable persistence tap the box on the right of Adjust to pop ...

Страница 148: ...rizontal Expansion Center Horizontal expansion is divided into two types screen center and trigger position 1 Screen center Select to adjust the time base waveform to expand or contract toward both sides with the screen center as the base point and the delay time does not change 2 Trigger position Select to adjust the time base waveform to expand or contract toward both sides with the trigger posi...

Страница 149: ...ze the type of input signal and adjust the control mode It automatically adjusts the vertical scale horizontal scale and trigger setting and adjust the waveform to the best display state For details please refer to 2 10 Use Auto in Chapter 2 10 8 Measurement Tap in the right function area to open or close the automatic measurement menu For details please refer to 7 1 Automatic Measurement in Chapt...

Страница 150: ...e oscilloscope acquisition system It is recommended that you read this chapter carefully in order to understand the setup and operation of the sampling system of the ATO oscilloscope Sampling overview Run stop and single sequence acquisition running control Select sampling mode Record length and sampling rate ...

Страница 151: ...can be reconstructed without aliasing fMAX fS 2 Nyquist frequency fN alias frequency Aliasing Aliasing occurs when the signal is under sampled fS 2fMAX Aliasing is signal distortion caused by incorrectly reconstructing low frequencies from a small number of sampling points Figure 11 1 Aliasing Oscilloscope bandwidth and sampling rate The oscilloscope bandwidth usually refers to the lowest frequenc...

Страница 152: ...cope sampling rate should be 4 times or more of its bandwidth fS 4fBW This can reduce aliasing and cause greater attenuation in the aliased frequency components Oscilloscope rise time The oscilloscope rise time is closely related to its bandwidth The rise time of an oscilloscope with Gaussian type frequency response is approximately 0 35 fBW based on the standard from 10 to 90 The oscilloscope ris...

Страница 153: ...h Desired Accuracy Desired Oscilloscope Bandwidth 20 fBW 1 0xfknee 10 fBW 1 3xfknee 3 fBW 1 9xfknee Table 11 1 Bandwidth Corresponding to Oscilloscope Measurement Accuracy 11 2 Run Stop Key and Single SEQ Key Use softkeys in the button area to start and stop the oscilloscope acquisition system Run Stop button and Single Sequence Acquisition button When the Run Stop button is displayed in green it ...

Страница 154: ...de produces the best display effects for most waveforms Peak sampling mode In peak sampling mode when the horizontal time base setting is low the minimum and maximum sample values are retained to capture rare events and narrow events with any noise expanded This mode will display all pulses that are at least as wide as the sampling period When the time base is set to 200ms and above the oscillosco...

Страница 155: ...etection mode to find burrs 1 Connect signal to the oscilloscope to be stably displayed 2 To find burr select the peak sampling mode in Sampling Mode option in the Channel menu 3 In the menu tap Display Persistence then tap infinite persistence The oscilloscope will restart sampling data and display them on the screen ...

Страница 156: ...aveform capture For example if the record length is 0 7M it means that 700K sample points are captured by one trigger The oscilloscope record length and sampling rate have the following relationship Sampling rate Record length Acquisition time Generally the oscilloscope acquisition time is exactly the display time on the current entire screen current horizontal time base 14 For example if the osci...

Страница 157: ...the two channels will halved For example when CH1 and CH3 are opened the sampling rates of CH1 and CH3 are both 500 MSa s If any three channels or all four channels are opened the sampling rate per channel will become 1 4 of the maximum sampling rate For example when CH1 CH2 and CH3 are opened the sampling rates of CH1 CH2 and CH3 are 250 MSa s for each of them ...

Страница 158: ...of the icons in the homepage and how to set them It is recommended that you read this chapter carefully in order to understand the home page function of the ATO oscilloscope Automotive Contact us File manager Settings Quickguide Photo Video Time Shutdown The following figure shows the contents of the oscilloscope home page See Figure 12 1 Figure 12 1 Homepage ...

Страница 159: ...gure 12 2 File Manager Picture Tap picture to open the picture list and enter the picture management interface Tap the picture The picture is selected Click again to cancel the selection If you select a single picture file you can delete and rename the picture file When you insert a U disk you can export the file to the U disk If you select multiple picture files you can delete the file When you i...

Страница 160: ...display bar to set the shutdown time If there is no operation within the set shutdown time the oscilloscope will automatically shut down If the oscilloscope is operated within the shutdown time the system will start to calculate the shutdown time again and will not shut down automatically until the requirements are met Adjustment range of standby time invalid 1 60min USB When the USB cable is used...

Страница 161: ...pe can be accessed through FTP and the web interface of the oscilloscope can be accessed Establishing a LAN connection Automatic configuration Select automatic for IP acquisition mode Oscilloscope automatically obtains IP address subnet mask gateway IP and DNS IP Manual configuration Select static for IP acquisition mode Click the IP address input box pop up the virtual keyboard and manually enter...

Страница 162: ... mask gateway IP and DNS IP Manual configuration The steps of network setting are 1 Set the IP address The IP address should be set in the same network segment as the current network and cannot be duplicate 2 Set the subnet mask which is generally the default and does not need to be set manually 3 Set the gateway to be consistent with the routing gateway of the current network 4 Set DNS to be cons...

Страница 163: ...rade and online upgrade Figure 12 7 Upgrade Local upgrade 1 Contact micsig company or download the relevant upgrade package from the website the latest upgrade package download address http www micsig com html list_60 html 2 Use USB cable to connect oscilloscope and PC 3 In the setting and select USB option as USB storage device refer to USB option in setting to store the ...

Страница 164: ...utomatically after the upgrade Online upgrade 1 When connected to the Internet click upgrade now to check the update 2 Click download upgrade package 3 Click upgrade to start the upgrade and restart automatically after the upgrade Note 1 In the upgrade interface if you don t want to upgrade the program you can click home or return to exit 2 When upgrading the program it is necessary to ensure that...

Страница 165: ...nterface to view the quick guide of the oscilloscope and turn the page by sliding left and right Figure 12 9 Quick Guide 12 6 Photo Tap in the homepage interface to enter the picture viewing interface Figure 12 10 Picture Viewing Interface ...

Страница 166: ...g interface tap the select button at the bottom of the screen click the picture to select the picture and will be displayed on the left side of the picture and click the trash can icon at the bottom right corner of the screen to delete the picture After the U disk is connected to the oscilloscope if there are pictures in the U disk the pictures in the U disk will be automatically displayed in the ...

Страница 167: ...be displayed on the left side of the video and click the trash can icon at the bottom right corner of the screen to delete the video After connecting the U disk to the oscilloscope if there are videos in the U disk the videos in the U disk will be automatically displayed in the video viewing interface 12 8 Time Click on the homepage to enter the system time setting interface Click the time item to...

Страница 168: ...restart the oscilloscope Lock screen tap the oscilloscope screen will be locked and the upper right corner of the screen is displayed No other operation is allowed except shutdown and restart It will be displayed when clicking and disappear after 1 second When using the mouse the screen will lock and the touch screen will fail unless it is unlocked Unlocking After the screen is locked click the po...

Страница 169: ...166 Figure 12 15 Locking Interface ...

Страница 170: ...ration menu select bus type there are seven bus types UART RS232 RS422 RS485 LIN CAN SPI I2 C ARINC429 1553B where channels and can be used for decoding simultaneously Open the trigger setting menu choose an appropriate trigger type the corresponding bus trigger type and trigger mode can be set when the bus trigger is selected and the serial bus is displayed in graphic form In the serial bus decod...

Страница 171: ... key to open or close the text mode as shown in Figure 13 2 Figure 13 2 Bus Decode Text Mode Description Two decode channels S1 S2 in the text interface must be configured identically to be opened and each channel is displayed in chronological order with different colors ...

Страница 172: ... stable the bus configuration trigger mode setting and trigger level need to be adjusted Bus configuration Tap or to open the bus configuration menu as shown in Figure 13 4 The RX channel must be chosen and the following parameters must be set according to measured signals Idle level Choose Idle Low or Idle High to match the idle state of measured equipment For RS232 Idle Low may be chosen Note RS...

Страница 173: ...adecimal Click the baud rate setting box to open the baud rate selection column If Custom is chosen click to pop up the virtual soft keyboard select the bit to be modified enter value and click Enter on the virtual soft keyboard to complete setting The baud rate can be set from 1 2Kb S to 8 000Mb S The virtual soft keyboard is shown in Figure 13 5 Figure 13 5 Baud Rate Default Setting Note When th...

Страница 174: ... 1 1 5 or 2 stop bits or not the trigger will occur at the first stop bit c data Trigger at the specified data bit when measured signal data bits are effective as 5 to 8bits select data and select the trigger relationship as then select Trigger Data press data on the touch screen and use the pop up virtual keyboard to modify d 0 data the measured signal data bits is 9bits the 9th bit is parity bit...

Страница 175: ... level of signal may make the signal to be stably triggered The UART trigger graphic interface is shown in Figure 13 7 Method 1 Click configuration information to open the decode channel threshold level adjustment box and drag the adjustment box upward and downward to adjust the threshold level Figure 13 7 UART Graphic Interface UART graphic interface description 1 Trigger position 2 Trigger type ...

Страница 176: ... error data displays in red 5 When appears the time base needs to be adjusted to view decode results Figure 13 8 UART Text Interface UART text interface description see Figure13 9 1 S1 S2 S1 S2 is channel configuration bus information 2 Area for decode data 3 ASCII code corresponding to the text data when the data format is 9 bits and there is no parity bit ASCII code corresponds to lower 8 bits o...

Страница 177: ...vel high and low Select whether to display high active or low active after the signal start bit of measured equipment BaudRate Select the baud rate that matches the signal being measured and it can be customized The setting method is the same as that of UART and will not be repeated here As shown in Figure 13 9 Figure 13 9 LIN Bus Configuration Menu Trigger mode Open the trigger configuration menu...

Страница 178: ...s connected to measured signal The idle level is high and the baud rate is 19 2 kb s The trigger mode is synchronous rising edge Please follow these steps 1 Tap S1 to open the decode channel and click again to open the bus configuration menu 2 Select the bus type as LIN click Ch1 Idle High 19 20kb s and then close the menu 3 Open the trigger mode configuration menu and click Sync Rising 4 Click co...

Страница 179: ... 2 Decode data displays as hexadecimal system 3 Frame ID displays in yellow Data displays in white and Parity sum displays in green If the parity sum has error it is displayed in red E 4 When appears the time base needs to be adjusted to view decode results Figure 13 12 LIN Text Interface LIN text interface description as shown in Figure 13 12 ...

Страница 180: ... channel 2 Time Time intervals between the last frames to current frames 3 ID Frame ID value 4 Data Frame data 5 Error Check Frame parity sum the sum of parity error displays in red 6 Trigger Yes means the frame reaches trigger condition 7 Clear Clear counter data ...

Страница 181: ...the signal source needs to be set and the signal type and baud rate are set according to measured signal the setting method is the same as that of UART and will not be repeated here See Figure 13 14 Figure 13 14 CAN Bus Configuration Menu Trigger mode Open the trigger configuration menu and select the appropriate trigger type when S1 CAN bus trigger is selected as shown in Figure 13 15 Figure 13 1...

Страница 182: ...ion e ID data trigger on data frame that matches set ID and data The configuration method is the same as the remote frame ID configuration f Wrong F trigger on CAN error frame g All Error trigger when there is any error in format or activity h Ack Error trigger on recessive high Ack position i Over Load trigger on CAN overload frame CAN serial decode Ch1 is connected to measured signal The idle le...

Страница 183: ...as hexadecimal system 3 Frame ID displays in yellow Data displays in white and DLC and CRC codes display in green If there is frame error it is displayed in red E 4 When appears the time base needs to be adjusted to view decode results and indicates that the bus waveform corresponding to the decode data packet is incomplete and the data cannot be displayed correctly ...

Страница 184: ... frame ERF extended remote frame 5 DLC Number of data bytes sent by this frame This value can be ignored for remote frames 6 Data Frame data 7 CRC Frame CRC check code 8 Err Response error bit stuffing error format error CRC error 9 Trig Yes means the frame reaches trigger condition 10 Statistics counts the number of occurrences of frame type data length status etc and the percentage 13 4 SPI Bus ...

Страница 185: ...19 SPI Trigger Mode Configuration Menu The operation method is the same as CAN frame ID to be matched in the configuration and will not be repeated here Note According to the data byte length set by bus decode the value of the relevant bit within the byte length is set Trigger when the corresponding bit on data bus matches the set value SPI serial bus The measured signal channel Ch1 is connected t...

Страница 186: ...e trigger setting menu click data on the touch screen and use the virtual soft keyboard to set the data to be matched as 0001 4 Adjust the threshold levels of two channels according to signal amplitude the SPI trigger graphic interface is shown in Figure 13 20 Figure 13 20 SPI Graphic Interface SPI decode data packet description 1 Decode data packet displays real time data about the bus activities...

Страница 187: ... the decode data is displayed For example if the data word length is 8bit only one byte displays in the data column if the data word length is 16bit 2 bytes display in the data column if the data word length is 24bit 3 bytes display and if the data bits is 32bit 4 bytes display 4 Trig Yes means the frame reaches trigger condition Note One frame is measured by the set data word length and can meet ...

Страница 188: ...uration includes the serial clock SCL and the serial data SDA corresponding to the channel settings See Figure 13 22 Figure 13 22 I2C Bus Configuration Menu Notes When SCL or SDA channel is set the system will automatically set other channels Trigger mode Open the trigger configuration menu and select the appropriate trigger type When the I2C bus trigger is selected click the trigger type and rela...

Страница 189: ...ock edge if all bits in the frame type match The operation method of configuring frame type 2 is the same as frame type 1 and will not be repeated here h RomData When the read operation which contains 1010xxx control byte of the EEPROM appears on the bus and the Ack bit is correct then the read data can be captured If the captured data and the set data match the set relationship condition trigger ...

Страница 190: ... bus activities 2 Decode data displays as hexadecimal system 3 Address content display Read address displays in green write address displays in yellow and data displays in white W denotes write operation R denotes read operation D denotes decode data and A denotes no Ack bit 4 When appears the time base needs to be adjusted to view decode results Figure 13 25 I2C Text Interface ...

Страница 191: ... Yes means reach trigger condition 7 Restart Yes means reach restart condition 13 6 ARINC429 Bus Trigger and Decode For correctly decoding ARINC429 bus data and making trigger stable the bus configuration trigger mode set and trigger level need to be adjusted Bus configuration Tap or to open the bus configuration menu the following needs to be set Data Source Select channel for ARINC 429 signal Wo...

Страница 192: ...I source identifier DATA or SSM symbol status mark trigger are used after selecting trigger mode use the pop up virtual keyboard to modify it enter the value and click Enter on the virtual soft keyboard to complete the setting Trigger configuration menu description a WordBegin Trigger at the word start b WordEnd Trigger at the word stop c Label Label triggered when the specified tag value occurs d...

Страница 193: ...ears ARINC 429 serial decode The measured signal source is CH1 the decode format is LABEL DATA the display is in hexadecimal the baud rate is 12 5kb s and the trigger mode is LABEL operate as follows 1 Tap S1 to open the decode channel and click S1 again to open the bus configuration menu Select bus type 429 source as CH1 decode format as Label Data display in hexadecimal baud rate as 12 5kb s 2 O...

Страница 194: ... green Figure 13 29 ARINC429 Text Interface ARINC429 text interface description as shown in Figure 13 29 1 Ch bus channel 2 Time intervals between the last read write operations to current read write operations 3 LABLE label information identifier displayed in octal 4 SDI source target identifier displayed in binary displays XX if not identified separately 5 Data content of the transmitted informa...

Страница 195: ...decimal need to be set as shown in Figure 13 30 Figure 13 30 1553B Bus Configuration Menu Trigger mode Open the trigger configuration menu and select the appropriate trigger type When the trigger type is 1553B bus trigger click the trigger type on the screen as shown in Figure 13 31 Figure 13 31 1553B Trigger Mode Configuration Menu Trigger configuration menu description a Command status word sync...

Страница 196: ...cted g Data word Triggered when the specified data word is detected h Odd parity error Triggered when the odd parity bit is incorrect for data in the word i All errors Triggered when an error is detected 1553B serial decode The measured signal source is CH1 the bus display is hexadecimal the baud rate is 12 5kb s and the trigger mode is the command status word sync header and operate as follows 1 ...

Страница 197: ...Text Interface 1553B text interface description as shown in Figure 13 33 1 Ch bus channel 2 Time intervals between the last read write operations to current read write operations 3 Type frame type data frame DATA command status frame C S others N A 4 RAdr remote terminal address displayed in the selected numeration system N A for no content display 5 Data content of the transmitted information dis...

Страница 198: ...apter 14 Remote Control This chapter mainly covers the application of the host computer FTP and SCPI commands in order to understand the remote control function of the ATO oscilloscope Host computer PC Remote control FTP SCPI commands ...

Страница 199: ...nnection of Host Computer USB connection Connect USB Device to the computer and oscilloscope through USB data cable After the computer recognizes the USB device open the host computer set the connection mode to USB and display the device information in the device information display box in the lower right corner This indicates that the oscilloscope has been found Click to connect to the selected o...

Страница 200: ...the local directory C Users Public Pictures 4 Video record button Click to open or close video record function Videos are stored in local directory C Users Public Videos 5 Host computer storage button Set photo taking and video recording storage locations 6 Select oscilloscope connection mode USB and WIFI connections are available Note WIFI connection must ensure that oscilloscope and computer are...

Страница 201: ...e scroll wheel on the waveform display to move the current waveform 2 After opening the cursor operate the scroll wheel to move the current cursor 3 Click the trigger level button and operate the scroll wheel to adjust the trigger level 4 Put the mouse in the time base adjustment area and adjust the horizontal time base by operating the scroll wheel 14 1 5 Storage and View of Pictures and Videos S...

Страница 202: ...iew Pictures 14 2 Mobile Remote Control Micsig ATO1000 series oscilloscopes support remote control on mobile phone You need to download Android app from the official website of Micsig address http www micsig com html list_64 html and install it After App is successfully connected Android device can be used to control the oscilloscope and display the oscilloscope interface in a real time manner ...

Страница 203: ...e phone and oscilloscope to the network segment under the same router view the IP address of the oscilloscope and enters such IP address in the lower right corner of the mobile phone to connect successfully The first connection method is recommended 14 3 FTP Through FTP internal files of oscilloscope can be quickly viewed called and managed from PC or mobile phone The tBook mini series oscilloscop...

Страница 204: ...FTP IP address displayed on the oscilloscope and then connect Figure 14 8 FTPAddress Input Enter the username and password of FTP server The default username and the password are ftp Click Login and view call or manage files in the oscilloscope after successful login Figure 14 9 FTP Login ...

Страница 205: ...les in the oscilloscope after successful login Tip The connection method is the same as WLAN connection LAN Connect to the FTP function through LAN For details refer to WLAN connection and portable hotspot connection Mobile phone connection To connect to FTP via mobile phone download and install relevant file browser first such as ES file browser Check and make sure oscilloscope and mobile phone a...

Страница 206: ...d information exchange 7 bit code symbol in ISO646 equivalent to ASCII programming and other standards SCPI commands show a tree hierarchy consisting of multiple subsystems each of which is made up of a root keyword and one or several hierarchical keywords SCPI command can be used to programmatically control ATO1000 Series digital oscilloscopes via the USB interface ATO1000 Series may communicate ...

Страница 207: ...es bus bars junction boxes switches socket outlets in the fixed installation and equipment for industrial use and some other equipment for example stationary motors with permanent connection to the fixed installation Measurement category IV is for measurements performed at the power source of the low voltage installation Examples are electricity meters and measurements on primary overcurrent prote...

Страница 208: ...mes conductive due to condensation For example a sheltered outdoor environment Pollution degree 4 Permanent conductive pollution caused by conductive dust rain or snow Such as outdoor places 15 3 Software and Firmware Updates Micsig often releases software and firmware updates for its products To search for the firmware update for your oscilloscope please download it from the website download addr...

Страница 209: ...ther signal source is working properly Check whether the channel is turned on Check whether the vertical scale factor is set correctly Check whether the instrument is in single sequence waiting state for trigger Tap to resample signal 3 If the measured voltage amplitude is 10 times greater or smaller than the actual value Check whether the set attenuation factor of the channel is consistent with t...

Страница 210: ...lay This phenomenon is normal because the persistence time may be set too long and the waveform persistence shows persistence of vision The reason may be that sampling mode is set to envelope of sampling and the sampling mode can be modified to normal waveform for normal display 10 During measurement the measured value is displayed as This phenomenon is normal When the channel waveform displays be...

Страница 211: ...to reference channels 15 Tap the button during the use of oscilloscope there is no beep sound Check whether the sound volume setting is correct 16 Oscilloscope backlight has low brightness Check whether the backlight settings are correct 17 A waveform being moved changes abruptly Check whether the picture is displayed in full screen 18 Turn off the channel at Auto state This phenomenon is normal A...

Страница 212: ...es Micsig commit as follows Repair Commitments Micsig commits to use the original factory parts for products returned by the user for repair under warranty or not and the commissioning and testing standards are identical with new products Micsig the obligation to inform the customer but without any other obligations for non product defects or products with decreased performance not for objective r...

Страница 213: ...l Bandwidth ATO1102 100MHz AT01104 100MHz BNC input maximum voltage CAT I 300Vrms 400Vpk Channel number 2 or 4 oscilloscope channels Display Screen 8 TFT led multi point capacitive touch screen Display resolution 800 600 Background light intensity typical 250 candela m2 Communication Communication Interface USB Micro USB WIFI LAN Micro HDMI Power Supply Adapter power supply voltage frequency 100VA...

Страница 214: ...of 1 2 5 Differential delay typical 40 PS between any two channels with the same scale and coupling Horizantal Position range 14grids 14ks Scanning range s div 2ns div 1ks div Time base accuracy typical 20ppm Vertical Vertical zoom range V div 1mV div 10V div in steps of 1 2 5 Position range 6 grids Vertical resolution 8 bits Rise time typical 70MHz 5ns 100MHz 3 5ns DC gain accuracy typical 2 0 Tr...

Страница 215: ... special data value The user adjustable sampling point is set to 50 by default SPI optional Trigger on SS activation frame start MOSI MISO or MOSI and MISO on the SPI bus within 50 0 Mb s I2C optional Trigger on start repeated start stop lost ACK address 7 or 10 bits data or address and data on the I2C bus within 10 Mb s ARINC429 optional 1553B optional Trigger coupling mode DC AC HF suppression L...

Страница 216: ...ode X axis input Y axis input Channel 1 CH1 Channel 2 CH2 Storage Waveform Unlimited Picture Unlimited User settings 10 Display Maximum refresh rate 130k s Persist none auto 100ms 10s Waveform display range 14 10 grids Waveform display mode point line Language Chinese English etc ...

Страница 217: ...cilloscope or probe Clean the ventilation hole with a soft brush to keep it unimpeded Do not use any corrosive chemical cleaning agent so as to avoid damage to the oscilloscope motherboard If the fan needs to be cleaned please consult the after sales service personnel so as to avoid damage to the oscilloscope Warning Make sure the instrument is dry before recharging to avoid electrical short circu...

Страница 218: ...dard probes incl grounding cap grounding aligator clip standard rubber plug 2 Power adapter 12V DC 4A 3 Power cord 4 ATO calibration certificate 5 ATO packing list Optional accessories 1 Oscilloscope suitcase handbag 2 Battery 3 Carry strap belt 4 Secondary ignition probe ...

Страница 219: ...s any errors or omissions please contact Micsig The company is not responsible for accidents and hazards caused by users wrong operations The copyright of this manual belongs to Micsig No unit or individual may copy copy or extract without Micsig s authorization Micsig reserves the right to prosecute the above actions ...

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