multicomp pro MP720780 Quick Manual Download Page 19

 

 

17 

7.  Troubleshooting 

 

1. The oscilloscope cannot be turned on. 

It may be that  the battery is completely exhausted.  At this time,  even if  the 

oscilloscope  is  powered  by  the  power  adapter,  the  oscilloscope  cannot  be 

turned  on.  You  need  to  charge  the  battery  first,  and  do  not  turn  on  the 

oscilloscope.  Wait  for  about  15  minutes,  and  then  try  to  turn  on  the 

oscilloscope. If the oscilloscope still cannot be turned on, please contact us to 

serve you. 

2. The oscilloscope turns off after a few seconds of startup. 

It may be that the battery is exhausted. Check the battery symbol at the top 

left of the screen. 

  symbol indicates that the battery is exhausted and must 

be charged. 

3. After switching to the multimeter, the measurement 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 measured voltage amplitude value is 10 

times larger or smaller than the actual value. 

Check  whether  the  channel  attenuation  coefficient  is  consistent  with  the 

actual probe error ratio. 

5. In the oscilloscope state, there is a waveform display, but it cannot be 

stabilized. 

  Check  whether  the  source  item  in  the  trigger  mode  menu  is  consistent 

with the signal channel actually used. 

  Check  whether  the  trigger  electrical  level  has  exceeded  the  waveform 

range. Only by setting the parameters reasonably, the waveform can be 

displayed stably. 

6.  In  the  oscilloscope  state,  nothing  is  displayed  after  pressing 

Summary of Contents for MP720780

Page 1: ...Handheld Oscilloscope Quick Guide MP720780 MP720781 MP720782 and MP720783...

Page 2: ...tion to the User Interface of the Oscilloscope 9 Functional Check 10 Probe Compensation 11 Probe Attenuation Coefficient Setting 12 Safe Use of Probe 13 5 HOW TO USE THE MULTIMETER 14 About This Chapt...

Page 3: ...ement control and laboratory use EN61326 1 2006 Electrical equipment for measurement control and laboratory use EMC requirements EN61000 3 2 2000 A2 2005 Limits for harmonic current emissions equipmen...

Page 4: ...y appear on this product Danger Indicates an immediate hazard or injury possibility Warning Indicates a possible hazard or injury Caution Indicates potential damage to the instrument or other property...

Page 5: ...ction 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...

Page 6: ...ope When 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 th...

Page 7: ...d make a check on the instrument according to the following steps 1 Check whether there is any damage caused by transportation If it is found that the packaging carton or the foamed plastic protection...

Page 8: ...Use the Oscilloscope The Structure of the Oscilloscope Front Panel and Keys The front panel and keys of the oscilloscope are shown in Figure 4 4 11 6 7 9 10 16 15 14 13 12 5 17 3 8 1 2 Figure 4 Front...

Page 9: ...illoscope or range key multimeter 8 Zoom or move key Function of direction keys used for the up and down movements of waveform the time base changing the voltage cursor movements and the trigger of el...

Page 10: ...8 Side Panel 1 2 3 Description 1 Probe compensation 3 3V 1kHz square wave signal output 2 Charging or USB communication interface 3 Bracket...

Page 11: ...ained 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...

Page 12: ...he channel is not open 15 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 cha...

Page 13: ...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 m...

Page 14: ...e 0 3 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...

Page 15: ...e setting value of the probe switch is 1X and 10X See Figure 04 Figure 0 4 Probe Attenuation Switch Note When the attenuation switch is set to 1X the probe limits the bandwidth of the oscilloscope to...

Page 16: ...aking any measurements connect the probe to the instrument and connect the ground terminal to the ground 5 How to Use the Multimeter About This Chapter This chapter introduces the multimeter function...

Page 17: ...ge 4 Indicating that there is a USB cable inserted 5 Battery power indication 6 Hold can keep the current reading on the display 7 Measurement value and unit 8 Display of switching resistance buzzer d...

Page 18: ...Connect the BNC cable to the port marked GEN Out in the top of the oscilloscope Generator Output Ports To observe the output of the waveform generator connect the other end of the BNC cable to the si...

Page 19: ...to the multimeter the measurement 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 ty...

Page 20: ...e If so center the trigger electrical level or set the trigger mode to automatic In addition you can press Auto to automatically complete the above settings 7 In the oscilloscope state the display spe...

Page 21: ...irect 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...

Page 22: ...power for about 6 hours The power supply and battery indicator symbols in the upper right corner of the screen are explained as follows symbol indicates the power on charging status symbol indicates...

Page 23: ...and only lithium batteries of the same specification can be used INFORMATION ON WASTE DISPOSAL FOR CONSUMERS OF ELECTRICAL ELECTRONIC EQUIPMENT When this product has reached the end of its life it mus...

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