Cable Harness Tester
Cable/Harness Tester

In the cable soldering process, open circuit, short circuit, and non-wetting (both cold soldering and empty solder) are the most common processing defects and the most common problems found in cable quality control.

8740 cable or connector tester has 128、256 and 512 test pin. Included 8740N、8740NA、8740FA series. The different between 8740N, 8740NA, 8740FA is AC and DC voltage.

The measurement items of 8740 cable or harness tester have (1) Open/Short;(2) Conductance; (3) Components; (4) AC Hipot; (5) DC insulation/ Hipot; (6) Quick conductance (7) Intermittence O/S, and (8) Quick Intermittence open circuit. It supports RS-232, USB Host, Print, Remote interfaces.

8740 cable or connector tester can test various of wires, connectors, and the combined products of connectors and wires.

  • Test pin 128/256/512
  • Number of test file up to 500 sets
  • The measurement items: Open/Short, Conductance, Components ,AC Hipot, DC insulation/Hipot, Quick conductance, Intermittence O/S, and Quick Intermittence open circuit.
  • Multiple DUT test - 4 (standard)/ expand 14 (option)
  • USB Host storages setting files and can update firmware
  • Support bar code scan and print function
  • External current expand box for wire buck measurement
Cable Tester HV Function

Cabel tester 8740 has safety hipot function,AC voltage max. 1000V, leakage current 5mA, DC voltage max. 1500V leakage current 1000uA, insulation resistance max. 1GΩ,Satisfy the reliability test requirements of automobile flower wire, new energy wire harness, circuit board and flexible board.


Intermittence O/S

The intermittence O/S is swing cable test, setting test seconds, cable tester will continuously scan within the set time to perform a short-circuit judgment test.

Measurement Data

Model Name 8740N 8740NA 8740FA
Measuring Mode 2-wire
Test Pin 128/256/512 128/256/512 128/256
AC output voltage  - 100-700V  100-1000V 
DC output voltage 50-1000V 50-1000V 50-1500V 
Hipot Output Accuracy ±5%  
Hipot Measurement Accuracy ±5%  
Rated Output 5Vdc  
Hipot Measurement Time 0.01 Seconds
Wire specifications Maximum allowable capacitance 5μF
Test Scan Mode

Auto, Manual, External Trigger

Measurement Signal Low Voltage Measurement Signal
Panel System / Rapid / Edit / Function 
Indicator Pass/Fail HV LED red-green indicator lights/Screen Display/Sound


Built-in Storage Number of test file up to 500 sets
Power Supply Fixed Voltage 115 / 230 Vac ±10% 
Frequency 60/50Hz
Interface RS-232, USB Host, Print, Remote
Operation Manual、 Auto、 Remote Control
Display 320*240 dot-matrix display
Environment Temperature :0 ~ 40  Humidity : RH75%
Dimension (W*H*D) 8740(128) - 435x145x406 mm
8740(256) - 435x145x406 mm
8740(512) - 435x190x406 mm
Weight   8740(128) - 8.44 kg
8740(256) - 9.3 kg
8740(512) - 14 kg

Measurement Items and Measurement Range

Measurement Items
Measurement Range
Conductance 100mΩ-52Ω
Intermittence Conductance 100mΩ-52Ω
AC Hipot Leakage Current 0.01mA -5mA
DC Hipot Leakage Current 0.1µA-1000µA
DC Hipot Insulation Resistance 1MΩ-1GΩ
O/S, Intermittence O/S,  Quick Intermittence open circuit
Resistance - Measurement Range  100mΩ-2MΩ
                  Level signal Fixed 2.4V
                  Current signal 30mA
Capacitance - Measurement Range  10pF-3µF
                    Frequency signal AUTO Gear (Optional) 48Hz/480Hz/4.8kHz/48kHz
                    Level signal Fixed 1.2V
Diode 0-7V
Single-Side Test Able to do the Single-Side Test
O/S determinal Judge With this feature

Advanced Functions 

Programmable continuous test
Pin search


All kinds of wires, connectors and combined products of connectors and wires



8740  Cable tester 線材測試儀器
operating instruction 操作說明


For YOUKU Link:

1. 益和 MICROTEST 8740  线材测试仪器  操作说明


Standard Accessories

  • Power Cord
  • Test Report
  • User Manual CD
  • Fixture Flat Cable(AK-8600F2)
  • AK-8600F2-8740FA
  • 8730-J2
  • probe

Optional Accessories

  • PC Link Software
  • Remote Control Cable
  • Calibration Kits(KB-8730K1)
  • Current Expand Box (F874003)
  • Multiple DUT Testing Expand Box (F874001)
  • FX-000C16
  • FX-000C18
  • FB-8600M1
  • Network Fixture
  • Footswitch(760001)
  • printer