Description
MICROTEST 8761FA-128P 128-Pin 4-Wire Cable & Harness Tester, 1 kV AC / 1.5 kV DC
The MICROTEST 8761FA-128P is a 128-pin 4-wire cable and wire harness tester with continuity measurement from 1 mΩ to 52 Ω. Separate current and voltage-sense connections reduce the effect of fixture lead resistance when checking low-resistance conductors and contacts. It combines AC Hipot testing up to 1 kV with DC Hipot testing up to 1.5 kV, insulation resistance covering 0.1 MΩ–1.2 GΩ, open/short testing, intermittent-fault detection and resistor, capacitor and diode checks. The intermediate pin count provides additional connection capacity within the smaller enclosure. Storage for up to 500 test files and RS-232, USB Host, printer and remote interfaces support repeat production work.
- 4-wire measurement with 64, 128, 256 test-point configurations.
- Continuity resistance from 1 mΩ to 52 Ω, with a 10 mA measurement current.
- Open/short, intermittent continuity, intermittent open/short, single-side testing and terminal judgement.
- N: DC Hipot up to 1 kV; NA: up to 700 V AC and 1 kV DC; FA: up to 1 kV AC and 1.5 kV DC.
- Insulation resistance covering 0.1 MΩ–1.2 GΩ.
- Component checks: resistance 50 mΩ–20 MΩ, capacitance 10 pF–12 µF and diode voltage 0.1–6.8 V.
- Automatic circuit learning for connection-pattern inspection.
- Up to 500 stored test files, programmable continuous testing, pin search and self-diagnosis.
- RS-232, USB Host, Print and Remote interfaces; optional PC Link and production accessories.
- Production inspection of cable and wire harness assemblies with up to 256 test points.
- Low-resistance conductor and contact checks using four-wire fixtures.
- Electrical inspection of automotive and consumer-electronics harnesses, connectors and flexible flat cables.
- Detecting intermittent connections during handling or movement of the assembly.
- Checking resistors, capacitors and diodes incorporated into cable assemblies.
- Dielectric-strength and insulation testing within the selected model’s ratings.
Product Images
Integrated cable and harness testing
Four-wire measurement down to 1 mΩ
Build a repeatable test sequence
Identify open and short circuits
Check dielectric strength and insulation












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8761 Specifications User Manual
USB TYPE C Test Solution



















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