Cable/Harness Tester
4-Wire Precision Cable/Harness Tester

Microtest 8761 cable/harness and connector testers can provide three different pins, such as 64, 128 and 256. The test profiles can be up to 500 sets or more. The on-state impedance accuracy is 10 times the 8750, avoiding the resistance issues caused from adapting the fixture wires, making the on-state measurement more accurate. To achieve the resolution of the on-state resistance of 1mΩ, the multiple filter line at the power supply is used, which reduces the generation of ripples 10 fold and also reduces thermal consumption and external power interference, giving the tester more measuring stability.

  • 64/128/256  testing points
  • Number of test file up to 500 sets
  • Multiple DUT testing - 4 pieces(standard)/14 pieces(option)
  • Automatically identify the normal or reverse plugin of connectors
  • Four-wire loop detection function
  • Capacitor polarity and diode leakage current test/type-c test
  • DC Hipot insulation test rapidly
  • AC/DC Hipot leakage current test rapidly
  • With single ended cable Open/Short test and HV Insulation/Leakage Current Test
  • With Open/Short/Conductance/Components test
  • Extendable testing ranges of Open/Short: 2k ~ 100kΩ
  • Advanced technology high speed of “Intermittence Open/ Short and Conductance Test”
  • USB (Software update, test results storage, files up/down)
  • With Speaker/Earphone jack
  • LCD contrast/Sound Volume (adjustable)
  • External current expand box for wire buck measurement

Measurement Data

Model 8761N 8761NA 8761FA
AC Hipot   - 100 ~ 700V  100-1000V 
DC Hipot  50 ~ 1000V  50 ~ 1000V 50-1500V 
AC Hipot Leakage Current 0.01mA ~5mA  
DC Hipot Leakage Current 0.1µA ~ 1000µA
DC Hipot Insulation 1MΩ ~ 1.2GΩ
Hipot Output Accuracy ±5%
Hipot Measurement Accuracy ±5%    
Rated Output 5Vdc    
Low Voltage Resistance 0.01Ω ~ 20MΩ    
Ponit of Test  64/128/256 Points 64/128/256 Points 64/128/256 Points
Hipot Measurement Time 0.01 Seconds - 60 Seconds
Test Scan Mode

Auto, Manual, External Trigger

Measurement Signal Low Voltage Measurement Signal
DUT Requirement Maximum Electric Capacity Allowance 3μF
Panel System / Rapid / Edit / Function 
Indicator Pass/Fail HV LED red-green indicator lights/Screen Display/Sound


Power Supply Fixed Voltage 115 / 230 Vac ±10% 
  Frequency 60 / 50 Hz
Display 320*240 dot-matrix display
Interface Printer Port, RS-232, USB
Flash Memory

Store up to 500 Sets of Test Settings Files

Operation Manual、 Auto、 Remote Control
Environment Temperature :0 ~ 40  Humidity : RH75%
Dimension (W*H*D) 8761(64) - 435x145x406 mm
8761(128) - 435x145x406 mm
8761(256) - 435x190x406 mm
Weight  8761(64) - 8.44 kg
8761(128) - 9.3 kg
8761(256) - 14 kg

Parameters Measurement Ranges

Item Range
Open/Short  2KΩ ~ 100KΩ
Intermittence Open/ Short 2KΩ ~ 100KΩ 
Open/Short determinal Judge Judge Momentary Broken Circuit
Conductance 1mΩ ~ 52Ω
Resistance 0.01Ω ~20MΩ
Capacitance  10pF ~ 3µF  
Diode 0 - 6.8V   
IR  1MΩ ~ 1.2GΩ  
Single-Side Test Able to do the Single-Side Test
AC Hipot Leakage Current  0.01mA ~5mA
DC Hipot Leakage Current  0.1µA ~ 1000µA

Advanced Functions 

Programmable continuous test
Pin search


All kinds of wires, connectors

No relevant audio and video files

Standard Accessories

  • Power Cord
  • Test Report
  • User Manual CD

Optional Accessories

  • Remote Control Cable
  • Calibration Kits(KB-8750K1)
  • Current Expand Box(F874003)
  • 4-wire turn to two-wire adapter board(F8750001)
  • Multiple DUT Testing Expand Box(F874001)