DSO-2072H
Handheld Oscilloscope
User Manual
Page 1: ...DSO 2072H Handheld Oscilloscope User Manual ...
Page 2: ...6 4 How to Use the Multim eter 22 About This Chapter 22 Instrument Interface 22 5 How to Use the Waveform Generator optional 25 Connect the output 25 Set the waveform 25 Set the load 25 Output the sine waveform 26 Output the square waveform 27 Output the ramp waveform 27 Output the pulse waveform 27 Output the Arbitrary waveform 28 6 Com m unication w ith PC 29 7 Troubleshooting 30 8 Technical Spe...
Page 3: ...erms may appear on this product Danger Indicates an immediate hazard or injury possibility W arning Indicates a possible hazard or injury Caution Indicates potential damage to the instrument or other property Safety Sym bols Sym bols on the product The following symbol may appear on the product Hazardous Voltage Refer to Manual Protective Earth Terminal Chassis Ground Test Ground Safety Requirem e...
Page 4: ...wo non isolated places with different DC electrical levels otherwise it may cause a short circuit due to the ground wire connection of the oscilloscope probe Warning Note that the channel should use a common reference when measuring otherwise it may cause a short circuit due to the ground wire connection of the oscilloscope probe Schematic diagram of the internal ground wire connection of the osci...
Page 5: ...n testing in a CAT II environment do not connect a voltage higher than 400 V to any input port When testing in a CAT II environment do not connect a voltage with a voltage difference of more than 400 V to the isolated input port Do not use an input voltage higher than the rated value of the instrument Pay special attention when using 1 1 test wires because the probe voltage will be directly transm...
Page 6: ...the following steps 1 Check w hether there is any dam age caused by transportation If it is found that the packaging carton or the foamed plastic protection cushion has suffered serious damage do not throw it away first till the complete device and its accessories succeed in the electrical and mechanical property tests 2 Check the Accessories The supplied accessories have been already described in...
Page 7: ... V DC 2 A internal rechargeable batteries inserted Note Use the supplied USB Cᵀᴹ to USB A cable Any replacement cable should be of the correct type and specification Refer to section General Technical Specifications for further information The Structure of the Oscilloscope Front Panel and Keys The front panel and keys of the oscilloscope are shown in Figure 3 1 ...
Page 8: ...essing the HOR key through the key you can change the horizontal time base setting and observe the change of the state information caused by it it can also be found that the horizontal tim e base display corresponding to the status bar has changed correspondingly the horizontal displacement of the signal in the waveform window can be adjusted by pressing 6 Return key Press this key to return to th...
Page 9: ... the voltage position changing and the movements of time cursor in the oscilloscope 9 Automatic setting key oscilloscope or automatic range key multimeter 10 Stop run key oscilloscope or value hold key multimeter or turn on off the signal output waveform generator optional 11 Input end of the multimeter 12 Trigger menu key oscilloscope or relative value key multimeter 13 Power switch key 14 Enter ...
Page 10: ...8 Side Panel Description 1 Probe compensation 3 3V 1kHz square wave signal output 2 Charging or USB communication interface 3 Bracket ...
Page 11: ... pre trigger data have been obtained and the oscilloscope is ready Scan Scan mode Continuously collect and display waveform data Stop Stop collecting waveform data 2 Run stop 3 Time base display 4 The pointer indicates the trigger horizontal position 5 The pointer indicates the trigger position within the current storage depth 6 Indicating the value of the current trigger horizontal displacement a...
Page 12: ...er indicates the grounding reference point zero position of the waveform displayed in CH2 channel If there is no pointer indicating the channel it means that the channel is not open 16 The pointer indicates the grounding reference point zero position of the waveform displayed in CH1 channel If there is no pointer indicating the channel it means that the channel is not open 17 Waveform display area...
Page 13: ... square wave display 1kHz 3 3Vpp can be seen as shown in Figure 3 3 Figure 3 3 Automatic Setting Repeat steps 2 and 3 on the CH2 channel Probe Com pensation When connecting the probe to any input channel for the first time make this adjustment to match the probe with the input channel The probe without compensation or deviation compensation will lead to measurement error To adjust the probe compen...
Page 14: ...ay Waveform of Probe Compensation 3 Repeat the steps if necessary Figure 3 5 Probe Adjustment Probe Attenuation Coefficient Setting The probe has a variety of attenuation coefficients which will affect the vertical position factor of the oscilloscope To change check the set value of probe attenuation coefficient in the oscilloscope menu please follow the steps below 1 Press the CH1 CH2 key to swit...
Page 15: ...e setting value of the probe switch is 1X and 10X See Figure 3 6 Figure 3 6 Probe Attenuation Switch Note When the attenuation switch is set to 1X the probe limits the bandwidth of the oscilloscope to 5 MHz To use the full bandwidth of the oscilloscope be sure to set the switch to 10X Safe Use of Probe The safety ring surrounding the probe body provides a barrier to protect the fingers from electr...
Page 16: ... select the channel and move the vertical position of the selected channel up or down by pressing the or direction keys Press the and direction keys at the same time to center the vertical position Vertical Volt Div Setting The volt div range is 10mV div 10V div probe 1X stepping in the 1 2 5 way or 100mV div 100V div probe 10X 1V div 1000V div probe 100X 10V div 10000V div probe 1000X Press the C...
Page 17: ... of the screen When the horizontal position changes the position relative to the waveform trigger point changes Note Press the and direction keys at the same time to center the horizontal position The description of the horizontal system setting menu is as follows Function m enu Setting Description Acquisition mode Sampling Normal sampling method Peak detection Used to detect interference glitches...
Page 18: ...measurement on or off Source CH1 CH2 Set the source Add Delete Frequency F Period T Amplitude Va Maximum Ma Minimum Mi Peak to Peak value Vpp Average value V Add or delete the selected measurement type displayed in the lower left corner up to 6 types Note The unselected state is The selected state is Cursor M easurem ent Press and the F2 key to realize cursor measurement The description of Cursor ...
Page 19: ...the oscilloscope starts to acquire data and display waveforms Once the trigger is set correctly it can convert an unstable display into a meaningful waveform When the oscilloscope starts to acquire data it first acquires enough data to draw the waveform on the left side of the trigger point The oscilloscope continuously acquires data while waiting for the trigger condition to occur When a trigger ...
Page 20: ...re met When a trigger is detected a waveform is sampled and then stopped 1 2 Enter the next menu Edge Rising edge Falling edge Trigger on the rising edge of the signal Trigger on the falling edge of the signal Trigger centered The trigger position is set in the middle of the waveform Force trigger Forced trigger key which forcibly generates a trigger signal mainly used in the normal and single mod...
Page 21: ... menu and press F2 to select the reference waveform to enter the reference waveform menu The description of the Reference Waveform menu is as follows Function Menu Setting Description Source CH1 CH2 Select the reference waveform to be saved Target R1 R2 R3 R4 Set waveform name Display On Off Call or close the waveform of the current target address in the internal memory When it displays On if ther...
Page 22: ...d Save Store the waveform of the source in a csv file named by the specified file name Image File name image1 image2 image3 image4 Select the file name of the stored wave image Save Store the current screen image in the bmp file named by the specified file name System Settings Press the System key to enter the system function menu Display The description of the menu is as follows Function Menu Set...
Page 23: ...the instrument model serial number version and checksum can be displayed System upgrade To upgrade the system The version of the upgrade package must be higher than the version of the instrument itself 2 2 Return to the previous menu Default Settings Press the System key to enter the system setting menu Select F3 Default Setting the screen will prompt press F3 to execute the default setting otherw...
Page 24: ...ou can execute this program at any time but if the ambient temperature variation range reaches or exceeds 5 you must execute this program To perform automatic correction disconnect all probes or wires from the input connector Then press the System key Press the menu selection key F4 to enter the next page and press the menu selection key F3 Perform automatic correction after confirming readiness 4...
Page 25: ... current measurement ACA AC current measurement Resist Resistance measurement Diode Diode measurement Cont On Off measurement Cap Capacitance measurement 2 Range indication Manual means manual range Auto means automatic range 3 Current measurement range 4 Indicating that there is a USB cable inserted 5 Battery power indication ...
Page 26: ...citance measurement function 9 The selected range V or mV in voltage measurement the selected current range A or mA in current measurement 10 To choose AC or DC current measurement 11 To choose AC or DC voltage measurement 12 Display of relative value measurement function only available when measuring DC current DC voltage and resistance ...
Page 27: ...Generator Output Ports To observe the output of the waveform generator connect the other end of the BNC cable to the signal input connector of the oscilloscope Set the w aveform 1 Press the Mode button to switch the instrument interface to the waveform generator function interface 2 Press F1 to select the desired waveform and the screen will display the corresponding waveform setting menu 3 Set th...
Page 28: ...the parameter column Press F2 to switch between Frequency Period Use the direction keys to change the selected param eter value Press to increase or decrease the value at the cursor Press to move the cursor left and right to different numerical digits Note W hen setting param eters long press the key to accelerate the change of the value Set the Am plitude High Level Press the F3 or F4 key to swit...
Page 29: ...the F3 or F4 key to switch to the Symmetry parameter use the direction keys to set the desired value in the parameter column Output the pulse w aveform Press the F1 key to enter the pulse waveform setting interface The pulse waveform setting menu includes Frequency Period Start Phase Amplitude High Level Offset Low Level Pulse Width Duty Cycle Rise Time Fall Time For the setting frequency period a...
Page 30: ...ut the sine waveform on page 26 Type built in waveform The system has 8 built in waveforms To select the built in waveform Press the F3 or F4 key to switch to the Type parameter and then use the F2 or direction keys to select the desired built in waveform in the parameter column Built in w aveform list Nam e Explanation Sinc Sinc function Bessely BesselII function Besselj BesselI function StairUp ...
Page 31: ...ter 1 Connection Use a USB data cable to connect the USB Device port in the right panel of the Oscilloscope to the USB port of a PC 2 Install the driver Run the Oscilloscope communication software on PC push F1 to open the help document Follow the steps of title I Device connection in the document to install the driver 3 Port setting of the softw are Run the Oscilloscope software click Communicati...
Page 32: ...the m ultim eter the m easurem ent type is displayed as E It may be that the measurement type was not selected At this time press F4 the measurement type should display the corresponding measurement type If E is still displayed restart the oscilloscope 4 In the oscilloscope state the m easured voltage am plitude value is 10 tim es larger or sm aller than the actual value Check whether the channel ...
Page 33: ...switch set to 10X and the oscilloscope The oscilloscope must first meet the following two conditions to meet these specifications and standards The instrument must be operated continuously for more than 30 minutes at the specified operating temperature If the operating temperature variation range reaches or exceeds 5 the system function menu must be opened to execute the automatic correction progr...
Page 34: ...cord length 8K or 4K optional Vertical Sensitivity Volt div range 10 mV div 10 V div Displacement range 6 div Analog bandwidth 70 MHz Single bandwidth Full bandwidth Low frequency response AC coupling 3dB 10 Hz Rise time typical on BNC 5 ns DC gain accuracy 3 Measurem ent Cursor ΔV ΔT Automatic Period Frequency Mean PK PK Max Min Amplitude Trigging Source CH1 CH2 Type Edge Coupling DC AC Trigger t...
Page 35: ...ital display 20 000 readings Measurement type Voltage current resistance capacitance on off diode Maximum input voltage AC 750V DC 1000V Maximum input current AC 10A DC 10A Basic function Range Minim um resolution Accuracy DC voltage 200 00mV 0 01mV 0 43 14dig 2 0000V 0 1mV 0 43 7dig 20 000V 1mV 200 00V 0 01V 1000 0V 0 1V 0 71 7dig AC voltage 200 00mV 0 01mV 1 14 14dig 2 0000V 0 1mV 20 000V 1mV 20...
Page 36: ...00 V D5 2 20 fast acting fuse Resistance 200 00Ω 0 01Ω 1 14 14dig 2 0000kΩ 0 1Ω 1 14 7dig 20 000kΩ 1Ω 1 14 4dig 200 00kΩ 10Ω 2 0000MΩ 0 1kΩ 20 000MΩ 1kΩ 1 43 4dig 100 00MΩ 0 01MΩ 7 14 14dig Capacitance 20 000nF 1pF 4 29 14dig 200 00nF 10pF 2 0000μF 0 1nF 20 000μF 1nF 200 00μF 10nF 2 0000mF 0 1uF Others On Off test 50Ω Diode test 0 2V Auto range TRMS Arbitrary Waveform Generator Optional Characteri...
Page 37: ...35 Am plitude 50Ω 0 01Vpp 2 5Vpp DC offset High Z 2 5V Amplitude Vpp 2 Frequency Resolution 0 01 Channel 1 W aveform Depth 8k Vertical Resolution 14 bits Output Im pedance 50 Ω ...
Page 38: ...0 Surroundings Characteristics Description Temperature Working temperature 0 40 Storage temperature 20 60 Relative humidity 90 Height Operating 3 000 meters Non operating 15 000 meters Cooling method Natural cooling Mechanical specifications Characteristics Description Dimensions 198 mm length 96mm height 38 mm width Weight About 0 6 kg main unit without battery Softw are Characteristics Descripti...
Page 39: ...re or place the instrument in a place where the LCD screen will be exposed to direct sunlight for a long time Caution Do not let spray liquid or solvent touch the instrument or probe to prevent damage to the instrument or probe Cleaning Check the instrument and probe frequently according to the operation Clean the external surface of the instrument as follows 1 Please wipe the floating dust outsid...
Page 40: ...epending on the storage time before turning it on In addition if the device is not used for a long time it is recommended to charge it at regular intervals to avoid over discharge of the lithium battery The lithium battery may not be fully charged when delivered To make the battery fully charged it takes up to 4 5 hours when the device is turned off or it is subject to the charging indicator After...
Page 41: ...ormal operation of the equipment Note To avoid overheating of the battery during charging the ambient temperature must not exceed the allowable value given in the technical specifications Battery Replacem ent a Preparation 1 Switch the product OFF 2 Disconnect any measuring leads and or USB cable from the product b Replacing the rechargeable batteries 1 Remove the 1x battery compartment cover scre...
Page 42: ...ch the product OFF 2 Disconnect any measuring leads and or USB cable from the product b Replacing the fuse 1 Remove the 1x battery compartment cover screw located underneath the bracket stand 2 Remove any inserted batteries 3 Remove the 4x cover retention screws 4 Replace the fuse 5 Attach the cover 6 Replace batteries 7 Attach the battery compartment cover ...
