Description
MICROTEST 8761NAK-512P 512-Pin 4-Wire Cable & Harness Tester, 700 V AC / 1 kV DC
The MICROTEST 8761NAK-512P is a 512-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 700 V with DC Hipot testing up to 1 kV, insulation resistance covering 0.1 MΩ–1.2 GΩ, open/short testing, intermittent-fault detection and resistor, capacitor and diode checks. The 512-point K configuration provides additional connection capacity in a 435 × 270 × 360 mm enclosure. A separate low-resistance scanning function covers 10 mΩ to 52 Ω at 10 mA. Storage for up to 500 test files and RS-232, USB Host, printer and remote interfaces support repeat production work.
- 4-wire measurement with 512 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.
- K enclosure with 16 front connector slots for high connection-count fixtures.
- Low-resistance scanning from 10 mΩ to 52 Ω at 10 mA.
- NK: DC Hipot up to 1 kV; NAK: up to 700 V AC and 1 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 512 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
512 test points for larger cable assemblies
Four-wire measurement down to 1 mΩ
Identify open and short circuits
Check dielectric strength and insulation
Test components within the assembly












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8761 Specifications User Manual
USB TYPE C Test Solution

















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