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1. GENERAL 

This  meter  is  an  intelligent  and  multi-functional  device  for  various  measurements.  It  features  high quality,  high 

accuracy, high reliability, special high frequency measurement and low cost. The meter is in compliance with IEC 

6010 CAT II 1000V and CAT III 600V high voltage standards. Other features of this instrument are listed below: 

 

Multi-display: primary 80000 counts, secondary 80000 counts, bar graph 23 segments 

 

50 measuring functions, with basic DCV, ACV, DCA, ACA, Ω, CAP, Hz, TEMP, diode and Continuity 

measuring function, etc. 

 

18 types of frequency, frequency up to 80MHz, 1800 waveform outputs, 0.1%~99% duty cycle. 

 

Simultaneous measure (AC+DC), (AC+Hz), (DC+dBm), (dBm+Hz), (Hz+Duty), ( + ). 

 

Auto data

 update,

 auto data hold, auto peak hold. 

 

36-hour dynamic record: MAG, MIN, AVG, MAX-MIN (REL

), (REL%), setting upper & lower limit, 

timing measurement 

 

AC measuring adopts highly accurate true RMS measurement, with testing frequency bandwidth and 

AC+DC measuring, capable of accurate true RMS measuring of any waveforms in AC range 

 

RS-232 interface 

 

SAFETY INSTRUCTIONS 

 

  High voltage       

  GND       

  Dual insulation       

  Refer to manual. 

  WARNING! To avoid the electric shock and physical injury, and to avoid possible damage to the meter 

and the tested equipments, read this operation manual carefully before using this meter, and follow the following 

safety guidelines: 

 

Before use, check and make sure that the instrument’s plastic chassis, the test leads and the insulation layer 

are intact. 

 

Use

  the  meter  only  as  specified  in  this  manual.  Otherwise,  the  protection  provided  by  the  meter  may  be 

expired. 

 

Never measure voltage while the test leads are inserted into the current input terminals. 

 

Do not use the meter if it looks damaged 

 

Inspect  the  leads  for  damaged  insulation  or  exposed  metal,  check  test  lead  continuity.  Replace  damaged 

leads. 

 

Disconnect  the  power  and  discharge  all  high-voltage  capacitors  before  testing  in  resistance,  continuity  and 

diode function. 

 

Be cautious when working at voltage above DC60V or AC42V. Such voltages may cause a shock hazard. 

 

When undertaking measurement, keep your fingers behind the guard’s plant on the test leads or probes. 

 

Select the proper function and range for measurement to avoid damage to the meter. 

 

Disconnect the test leads from the test points before changing to another function. 

 

 

 

 

The specifications are subject to change without notice. 

The  content  of  this  manual  is  regarded  as  correct.  If  any  error  or  omits  is  found,  please  contact  with  the 

manufacturer. 

We hereby will not be responsible for the accident and damage caused by improper operation. 

The function stated for this User Manual cannot be the reason of special usage. 

Summary of Contents for MT8145

Page 1: ...Benchtop Instrument 80000 Counts 4 7 8 Bench Digital Multimeter Operation Manual...

Page 2: ...s read this operation manual carefully before using this meter and follow the following safety guidelines Before use check and make sure that the instrument s plastic chassis the test leads and the in...

Page 3: ...2 2 PANEL INSTRUCTIONS Fig 2 1 Front panel Fig 2 2 Rear Panel...

Page 4: ...s TIMER key to start the secondary display for counting time Press TIMER key again to turn off the counting time display When the secondary display is display counting time press key SELECT to enter B...

Page 5: ...ppears on the LCD display The relative measuring function measures the difference between the testing value and the reference value The current readings on the secondary display are used as a relative...

Page 6: ...C DC AC DC AC voltage or current 10 PH PH Peak Hold Peak Hold 11 A H Auto Hold 12 AVG Average reading 13 Auto Auto mode 14 APO Auto power off sign 15 RS232 Communication on annunciation 16 MAX MIN MAX...

Page 7: ...alue on the primary display and on the secondary display c If the measuring value is between and upper and lower limit the LCD displays the measuring value on the primary display and on the secondary...

Page 8: ...lly will automatically exit the HOLD or MAX MIN mode 3 Enter or exit mauran range mode Press RANGE button to select manual range mode Then every press on the RANGE button the meter steps to a higher r...

Page 9: ...choose from 8 0000V 80 000V 750 00V Connect the black test lead to COM terminal and the read test lead to V Hz terminal Touch the test leads to the test points and read the display on both the primary...

Page 10: ...mpt an in circuit current measurement when the fuse is blown or when the voltage between open circuit and the ground is 1000V To avoid damage to the meter check the meter s fuse before proceeding Befo...

Page 11: ...rations apply the same as explained in section 4 4 Press SELECT Primary display Secondary display Press 2nd VIEW DCA DCA ACA ACA DCA ACA DC AC A ACA ACA Hz ACA Hz 4 6 Resistance Measurement WANRNING T...

Page 12: ...ance Use the DC function to confirm that the capacitor is discharged NOTE Some capacitors have polarities In measuring polarities capacitors touch the red test lead to the positive polarity and the bl...

Page 13: ...nd read the display Measurement mode Primary display Secondary display Press 2nd VIEW Hz Hz kHz MHz High frequency mode Hi Hz In Hi Hz mode the frequency testing range is 8MHz 1000MHz divided into fou...

Page 14: ...Read the display 4 10 Diode and Continuity Check WANRNING To avoid damage to the meter or the testing equipments disconnect circuit power and discharge all high voltage capacitors before measuring Us...

Page 15: ...software which allows easy connections to PC for PC control Software operating environment Windos9x NT 2000 XP Software version V1 0 5 1 Installation Plug the CD disk into the CD drive Start up the se...

Page 16: ...es you an easier view 5 11 Push Button Panel Basically the functions of the buttons on this panel are the same as the buttons on the multimeter Double click on the function buttons is in the same way...

Page 17: ...m part of the panel indicate the current status of the data recorder Battery indicates the power supply status of the multimeter If power supply is in good status it will display Battery High Otherwis...

Page 18: ...20A 1mA Table 4 ACA True RMS Range Resolution Accuracy Remarks 80mA 1 A 50Hz 5kHz 0 2 rdg 10 Fuse F750Ma 250v F13A 250V Voltage drop 800mV Max input current 20A up to15 seconds 800mA 10 A 8A 0 1mA 50H...

Page 19: ...nd ground 1000V RMS Continuity beeper Approx 3kHz Display dual display 80000 update 4 times Sec Bar graph 23 segments update 40 times Sec Electromagnetic compatibility For all ranges and functions exc...

Page 20: ...ter 7 1 Fuse replacement NOTE Please select fuse of the same specification to replace it Power fuse 200mA 250V located in input power socket Fuse for measuring current 800mA 250V located in the curren...

Page 21: ...oes not work properly take actions as described in this manual to check out if the meter is defective or not Once defective or malfunctioning is confirmed please contact your local distributor or the...

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