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7-Using the Multimeter 

32 

7. Using the Multimeter 

7.1 About this Chapter 

This chapter provides a step-by-step introduction to the multi-meter functions of the test tool 
hereafter. The introduction gives basic examples to show how to use the menus and perform basic 
operations. 

7.2 Making Meter Connections 

Use the four 4-mm safety banana jack inputs for the Meter functions:

 10A, mA, COM, 

V/Ω/C

.

 

See figure 2 on P11 for the connections.   

7.3 Multimeter Operation Window 

 

Figure 17: Multimeter Operation Window

 

Description 

1.

 

Battery electric quantity indicator. 

2.

 

Manual/Auto range indicators, among which the 

MANUAL

  means measuring range in 

manual operation mode and 

AUTO

  refers to the measuring range in automatic  operation 

mode.   

Summary of Contents for HDS-N Series

Page 1: ...i Handheld Storage Oscilloscope Model MP720014 and MP720015...

Page 2: ...he connection of 1 kHz 5 V Square wave test signal 12 5 2 Front Panel and Keys Overview 12 6 USING THE OSCILLOSCOPE 15 6 1 About this Chapter 15 6 2 Powering Up the Oscilloscope 15 6 3 Oscilloscope Op...

Page 3: ...urrent 38 7 4 8 Measuring AC Current 39 7 5 Freezing the Readings 40 7 6 Taking a Relative Measurement 41 7 7 Selecting Automatic ManualRange Adjustment 42 8 ADVANCED FUNCTION OF OSCILLOSCOPE 43 8 1 A...

Page 4: ...1 8 13 Using FFT 64 8 14 System State Menu 70 8 14 1 Real time clock 71 8 15 Setting of Time Base Mode 71 8 16 Data Transmission 73 9 TROUBLE SHOOTING 75 10 APPENDIX 76 10 1 Appendix A Specifications...

Page 5: ...Battery 2 AC DC adapter 3 Oscilloscope Probe 1 grey 4 Multimeter test lead 2 black and red 5 USB Mass Storage connect cable 6 Extension module for capacitance measurement 7 Probe adjustment tools 8 US...

Page 6: ...o indicate that when you read this mark personal injury may be caused to you immediately Warning The term Warning is used in this manual to indicate that when you read this mark personal injury may no...

Page 7: ...ical Outlet Probe Oscilloscope AC Adapter The diagram of the ground wire connection when the battery powered oscilloscope is connected to the AC powered PC through the ports Ground Clip Signal Input O...

Page 8: ...hnical personnel are permitted to perform maintenance Pay attention to the nominal values of all terminals To avoid fire or electric shock please keep a watchful eye on all nominal values and marks sp...

Page 9: ...and high contrast with adjustable back light Storage and call out of waveforms Automatic setting function provided capable of fast setting FFT function Implementation of detecting the average and pea...

Page 10: ...Due to Transportation If the packing boxes or foam cushions are found to have serious damage keep them in a safe place until the complete instrument and accessories have passed the electrical and mec...

Page 11: ...supply and battery recharging 2 Multimeter test lead 3 Multimeter input jacks including four circular banana jacks The first jack measuring the current 2A 10A the second jack on the current Measureme...

Page 12: ...ave test signal At the left side of the oscilloscope it is a port for testing 1 kHz 5 V square wave signal which is used to adjust the probe shown as Fig 3 Fig 3 The connection of Square wave test sig...

Page 13: ...5 Input Connections 13 Figure 4 Front Panel Description 1 AC adapter Port 2 RS 232C Port 3 USB Port 4 USB Mass Storage Port 5 Power switch 6 F1 F5 Switch or Adjust options for each menu...

Page 14: ...n the menu list 19 MENU Show Hide the menu 20 MENU Choose the lower item on the menu list 21 OPTION the key for DSO setting and combines with four arrow keys Then to set main time base trigger horizon...

Page 15: ...adapter as shown in Figure 1 The oscilloscope may still work with built in Li ion battery even without AC power supply Turn the oscilloscope on by pressing down the power on off key The instrument the...

Page 16: ...isplaying the waveform under the non trigger state Trig d The oscilloscope has detected a trigger and collecting the information generated after the trigger Ready All pre triggered data have been capt...

Page 17: ...y to select different function menus 3 Choose one key from F1 to F5 and press it to change function setting See the following figure 6 Figure 6 the Tool s Menus 6 5 Manually Setting the Vertical Syste...

Page 18: ...tting The following guidance is for the operation on the mode of edge triggering and video triggering 1 Press once the OPTION key the following is displayed at the bottom left side of the screen as sh...

Page 19: ...point through the adjustment of which you can regulate the display position of the waveform on the screen Main time base It means the time values represented by a division in the horizontal direction...

Page 20: ...fety BNC jack inputs CH for scope measurements four safety 4 mm banana jack inputs for Multimeter R V and A measurements Isolated input allows independent floating measurements between Multimeters and...

Page 21: ...surement 1 and measurement 2 These readings are selectable independently and the measurements can be done on the input waveform To choose a frequency measurement do the following 1 Press MENU key and...

Page 22: ...creen 2 Press the RUN STOP key once more to resume your measurement See the following figure 11 Figure 11 Freezing the Screen 6 12 Using Average for Smoothing Waveforms Using the Average acquisition m...

Page 23: ...averaging result on the screen shown as the following figures See the following figure 12 Figure 12 Average Factor Sampling Mode 6 13 Using Persistence to Display Waveforms You can use Persistence to...

Page 24: ...eforms of 50 ns or wider 1 Press MENU key and the function menu appear at the right side of the screen 2 Press MENU or MENU key to select the ACQU MODE Four items selectable are displayed at the botto...

Page 25: ...in this mode by which the random noise can be reduced Duration time When a new waveform is displayed the previous waveform shown on the screen does not disappear immediately only to be displayed for a...

Page 26: ...ress the MENU or MENU key to select CH SETUP Four items selectable are displayed at the bottom of the screen 3 Press F4 key to jump to Inverted set it as ON The inverted waveform is displayed on the s...

Page 27: ...rements The supported format of the USB disk FAT32 file system the allocation unit size cannot exceed 4K mass storage USB disk is also supported If the USB disk doesn t work properly format it into th...

Page 28: ...tem will pop up a warning message click Yes Format the USB disk warning 5 Set File System as FAT32 Allocation unit size 4096 Check Perform a quick format to execute a quick format Click OK and then cl...

Page 29: ...izard com free partition manager html Tip There are many tools for the USB disk formatting on the market just take Minitool Partition Wizard for example here 1 Connect the USB disk to the computer 2 O...

Page 30: ...Disk 4 Right click 1 or 2 red mark area choose Format Choose format 5 Set File System FAT32 Cluster size 4096 Click OK Format setting 6 Click Apply at the top left of the menu Then click Yes on the p...

Page 31: ...6 Using the Oscilloscope 31 Apply setting 7 Formatting process Format process 8 Format the USB disk successfully Format successfully...

Page 32: ...basic operations 7 2 Making Meter Connections Use the four 4 mm safety banana jack inputs for the Meter functions 10A mA COM V C See figure 2 on P11 for the connections 7 3 Multimeter Operation Window...

Page 33: ...reading of dial pointer by multiplying power will get the measurement result 8 The main reading of measurement 9 Automatic control measuring range 10 Absolute relative magnitude measuring control The...

Page 34: ...igure 18 Resistance Measurement 7 4 2 Measuring Diode To make a measurement on the diode do the following 1 Press the R key and R appears at the top of the screen 2 Press SET key until the following i...

Page 35: ...he screen 3 Insert the black lead into the COM banana jack input and the red lead into the V C banana jack input 4 Connect the red and black leads to the test point If the resistance value of the test...

Page 36: ...improve measuring precision It will take about 30seconds if capacitance measurement is larger than 40uF Now you can see a screen that looks like the following figure 21 Figure 21 Capacitance Measureme...

Page 37: ...SET key and ACV appears at the top of the screen 3 Insert the black lead into the COM banana jack input and the red lead into the V C banana jack input 4 Connect the red and black leads to the measure...

Page 38: ...will be displayed on the screen Look at the display you can see a screen that looks like the following figure 24 Figure 24 DC Current Measurement for 400 mA To measure a DC current which is larger tha...

Page 39: ...press F4 and F5 to switch the measurement between mA and 10A 400mA is acquiescently 2 Press the SET key once and ACA is visible at the top of the screen 3 Insert the black lead into the COM banana ja...

Page 40: ...ad into the COM banana jack input and the red lead into the 10A banana jack input 5 Connect the red and black leads to the measured point and the AC current value of the measured point will be display...

Page 41: ...ce value 1 Press R key and R is displayed on the top side of the screen 2 Press the SET key until C appears at the top of the screen 3 Plug capacitance extended module in capacitance measure jack 4 Wh...

Page 42: ...increased by a stage when pressing F1 key each time and when reaching the highest stage it jumps to the lowest stage by pressing F1 key once again To multiply the reading of dial pointer by multiplyin...

Page 43: ...and each item can be set respectively based on the specific channel To make vertical Channel settings do the following 1 Press the MENU key and the function menu appears at the right of the screen 2 P...

Page 44: ...ure a correct vertical scale reading Inverted OFF ON Waveform is displayed normally Open the Invert function of the waveform setting 8 2 1 Setting the Channel Coupling Press F1 key set Coupling as AC...

Page 45: ...rst and then ON to make an Open setting on channle 8 2 3 Setting the probe attenuation To prevent excessive input voltage we recommend you to set the probe attenuation level to the 10X position to pre...

Page 46: ...gathering data continuously After a trigger is detected the oscilloscope gathers enough data continuously to draw the waveform at the right side of the triggering point To make a trigger mode setting...

Page 47: ...e Rising Falling Triggering on the rise edge of the signal Triggering on the fall edge of the signal Trig mode Auto Normal Single Acquisition of waveforms is possible even if there is no triggering co...

Page 48: ...gs Description Sync Line Field Odd Field Even Field Line NUM Make a video line trigger synchronization setting Make a video field trigger synchronization setting Make a video odd field trigger synchro...

Page 49: ...ecrease Reset Off Time Reset Holdoff time to100ns Back Back to previous menu Note Trigger Holdoff can stabilize complex waveform such as the pulse range Holdoff time is the oscilloscope s waiting peri...

Page 50: ...udden peaks Peak Detect The maximum and minimum data in the sampling interval are picked up The peak detect mode captures rapid changes and sudden peaks but the waveform becomes noisy Average Multiple...

Page 51: ...With Persist function selected the displayed saved original data gradually decay in colour and the new data are bright in colour with infinite persistence mode selected the oscilloscope keeps all past...

Page 52: ...waveform The recalled waveform saved in the memory cannot be adjusted 8 7 1 Waveform Saving Setups in normal mode The WAVE SAVE menu is described in the following list Function menu Setups Description...

Page 53: ...ng 8 7 2 Waveform Saving Setups in FFT mode FFT being on the WAVE SAVE is described in the following list Function menu Setups Description WAVE A B C and D Select the address for saving or recalling a...

Page 54: ...ription Recall Factory Resume the instrument to its factory settings Auto calibration Perform the Auto calibration procedure Language Chinese English Other Select the display language Auto calibration...

Page 55: ...m Cyc RMS Measure Root Mean Square RMS value of waveform Vmax Measure the Vmax of waveform Vmin Measure the Vmin of waveform Vtop Measure the Vtop of waveform Vbase Measure the Vbase of waveform Vamp...

Page 56: ...surement menus are listed and described in the following table Function menus Settings Description Type OFF Voltage Time Close the cursor measurement Display the voltage measurement cursor and menu Di...

Page 57: ...ting voltage value to the zero position of Channel 1 will show at the bottom of the screen Setting OPTION or OPTION V1 will move up and down and the relating voltage value to the zero position of Chan...

Page 58: ...es T1 and T2 appear on the screen 4 Press OPTION and display as Cursor 1 Cursor 2 Press OPTION or OPTION and see T1 move left and right and LCD display the time value match T1 to point position in pan...

Page 59: ...ue of Cursor 2 To make a range measurement doing the following 1 Press the MENU key and the function menus are displayed at the right of the screen 2 Press the MENU or MENU key to select CURS MEAS Fiv...

Page 60: ...ion Autoscale OFF ON Turn off Autoscale Turn on Autoscale Mode Horizontal Vertical HORI VERT Only adjust vertical scale according to input signal Only adjust horizontal scale according to input signal...

Page 61: ...s 3 Oscilloscope is set as DC coupling with AUTO Triggering A warning message is displayed when trying to change these settings 4 The oscilloscope will turn off Autoscale if user is trying to adjust v...

Page 62: ...ecord frames 1 2 To next menu Refreshed ON OFF The waveforms are in the state of refreshing when recording The waveforms stop refreshing when recording Direction Increase Decrease The value increases...

Page 63: ...first frame to be saved End frame 1 1000 Set last frame to be saved Direction Increase Decrease The value increases from the set start frame to the end frame The value decreases from the set start fr...

Page 64: ...econd page of the record 8 13 Using FFT An FFT breaks down signals into component frequencies which the oscilloscope uses to display a graph of the frequency domain of a signal as opposed to the oscil...

Page 65: ...T operation for example the operation steps are as follows 1 Press MENU key and the function menu appear on the right side of the screen 2 Press MENU or MENU key to select FFT MODE Five items selectab...

Page 66: ...l position such as FFT 1 20 divs 8 Press OPTION the following prompts shows on the left bottom on the screen Time Base Trig Or Time Trig When Time is displayed press OPTION and OPTION menu button to a...

Page 67: ...ring the frequency spectrum of nonrepetitive signals and measuring frequency components near DC Use rectangle for measuring transients or bursts where the signal level before and after the event are n...

Page 68: ...nts or bursts where the signal levels before and after the event are significantly different Blackman This is the best window for measuring the amplitude of frequencies but worst at resolving frequenc...

Page 69: ...le to see an overall view of how all frequencies compare to each other Signals that have a DC component or offset can cause incorrect FFT waveform component magnitude values To minimize the DC compone...

Page 70: ...control SET 50 3 Auto scale function 4 Wave record 5 Measure 1 and Measure 2 8 14 System State Menu The system state menu is used to display information about the present horizontal system vertical sy...

Page 71: ...value can be adjusted 5 Press OPTION or OPTION to change the corresponding value of the year month date hour minute and second effectively 6 Press OPTION or OPTION to switch to the year month date hou...

Page 72: ...key to adjust the time base window area defined by two cursors the window size will vary 5 Press OPTION key and call TIME at this time press OPTION and OPTION to adjust the window position defined by...

Page 73: ...t automatically installed by the Windows system the USB driver may need to be manually installed The following steps can be used to install the driver Following this the PC software programs will reco...

Page 74: ...Advanced Function of Oscilloscope 74 On running the PC oscilloscope software a valid connection between the oscilloscope and the PC is indicated in green on the bottom right hand corner of the screen...

Page 75: ...channel attenuation level matches the actual probe attenuation ratio 5 The waveform is displayed on the screen but is not stable under the oscilloscope mode Check whether the signal item in the trigge...

Page 76: ...nction menu must be opened to make the system perform a Auto calibration procedure see calibration on P54 Except those specifications marked with the word Typical all specifications can be up to Sampl...

Page 77: ...y response AC coupling 3dB 10 Hz at the BNC Rise time typical one at the BNC MP720014 17 5 ns MP720015 5 8 ns DC gain accuracy 3 DC measurement accuracy average value sampling mode The voltage differe...

Page 78: ...me difference T between cursors Auto measurement Peak to peak value average value root mean square value frequency period Vmax Vmin Vtop Vbase Vamp Overshoot Preshoot Rise Time Fall Time Width Width D...

Page 79: ...400 0 mA 1 5 1 digit 100 uA 10 A 3 3 digits 10 mA Alternating Current AC Range Accuracy Resolution 40 00 mA 1 5 3 digits 10 uA 400 0 mA 2 3 digits 100 uA 10 A 5 3digits 10 mA Resistance Range Accuracy...

Page 80: ...urs Power Adapter Power supply 100 240 V AC 50 60Hz Voltage output 8 5 VDC Current output 1500 mA Battery type 7 4V built in Li ion battery Working environment Temperature Operation Used battery 0 to...

Page 81: ...ut so as to avoid electrical short circuit and personal injury caused by moisture 10 2 2 Storage of Oscilloscope If the test tool is to be stored for a long time it is required to charge the lithium b...

Page 82: ...ery INFORMATION ON WASTE DISPOSAL FOR CONSUMERS OF ELECTRICAL ELECTRONIC EQUIPMENT When this product has reached the end of its life it must be treated as Waste Electrical Electronics Equipment WEEE A...

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