AEM AHT-128 – Cable Harness Tester

The AHT-128 is a scalable, programmable PC-based cable harness tester. The device not only measures resistance but also identifies opens, shorts, crossed wires, mis-wires and pin-to-pin continuity. All results are logged and transferred to a PC for archiving and reporting.

Thanks to its PC-based architecture, all the computing load, the interface and the database reside on an external Windows computer. This provides unlimited storage for cable patterns and production logs, easy integration with ERP/MES systems, and no technological obsolescence of the measurement unit itself.

The Auto-learn function eliminates hours of manual netlist entry. Simply connect a verified reference harness (Golden Sample) and the software automatically scans every contact, maps the resistance network and stores a digital pattern in the database — in just a few seconds. No advanced training is required.

• Detects up to 8 connections per wire
• Measures resistance in milliohms
• Generated connection maps can be saved to the PC and loaded into the CHT Manager software
• Supports predefined Excel configuration files for harness mapping analysis

Traditional static testers miss intermittent faults — opens that appear only under vibration or when the harness is flexed. The AHT-128 samples every port every 200 ms in continuous mode, allowing the operator to physically manipulate and flex the harness during the running test. The system instantly captures and latches even microsecond opens in the circuit, preventing a defective product from being shipped to the customer.

The AHT-128 precisely identifies and locates various types of defects. The software not only reports a FAIL but pinpoints the specific pin and harness end — repair time drops from minutes to seconds.

• Opens (Open Circuit) — with harness-end location
• Shorts (Short Circuit) — indication of the specific pin
• Mis-wires (Mis-Wires) — detection and location
• Crossed wires (Crossed Wires) in complex bundles
• Pass/Fail result with identification of the faulty connection

The CHT Manager software controls one or several cascaded AHT-128 units. It enables harness configurations to be defined by editing a table, importing from CSV/Excel, or automatic learning from a reference harness.

• Configuration of resistance limits (upper and lower) for each connection separately
• Live measurement display with Pass/Fail results
• Result management with full traceability (Traceability) — date, time, resistance, operator ID, serial number
• Import of configuration from a CSV or Excel file (netlist from CAD/ECAD systems)
• Export to PDF and CSV reports
• Native integration with barcode scanners — scanning a work order automatically loads the correct test program
• Support for multiple cascaded AHT-128 units (up to 1024 points)

• Cable harness quality control in automotive and industrial manufacturing (IATF 16949)
• Verification of harness wiring in electronic devices and home appliances/consumer electronics
• Continuity and resistance testing of connectors, patch cords and installation cables
• Diagnostics of wiring faults: opens, shorts, crossed wires and mis-wires
• HMLV (High-Mix Low-Volume) production lines — instant changeovers via barcode scanner
• R&D laboratories and quality control (QC) stations
• Applications requiring result traceability — aerospace, medical, industry

Interlab is the Authorized European AEM Service and Calibration Center — the only one in Poland. We provide full technical support, service and on-site demonstrations of AEM devices. Ask us for a quote.