High Voltage
Harness Tester

The CH2 performs complete high voltage testing on large harnesses and complex devices. Easy-to-use software simplifies high voltage testing. The tester is the most compact in its class yet can expand to fit your testing requirements.

CH2 High Voltage Cable Tester

Our advanced tester offers robust high voltage testing capabilities, accommodating up to 1500 VDC and 1070 VAC. It’s adaptable, allowing expansion to 100,000 test points in increments of 156 points. The compact base and expansion chassis can hold up to 800 test points each.

The CH2 model is designed for intricate wire assemblies, including those with electrical components. By incorporating the optional Energization unit, it becomes possible to functionally test active components like relays.

Powered by the user-friendly Easy-Wire software, this tester simplifies the process with visual connector images and prompts, aiding in both assembly and troubleshooting tasks.


CH2 Wireframe


Each unit accommodates up to 800 test points. The system is expandable to 100,000 points with additional units. Easily distribute multiple test units around a large project.

Woman assembling wire harness for aerospace

Capable Testing

Test assemblies with electrical components and multiple shields. Capable of 4-wire Kelvin measurements. Functionally test active components such as relays with the optional energization unit.

Commercial aircraft in hangar for maintenance

High Voltage Testing

Supports test voltages up to 1500 VDC / 1070 VAC. Integrates with optional external meters for expanded measurements

Rack mounted CH2 with custom interface panel


Optionally available with custom front panel connector interface. Easily rack-mounted for larger applications.


Operator Guidance

Graphic representations and operator visul and audio prompts simplifies the build process and troubleshooting. Compatible with Cirris Smart-Lights®.


Easy-Wire® Software

Powerful software provides efficient test set-up and retrieval, operator access based on login, flexible test operation and reporting, and a test record archive.


Test Points

Up to 800 points per box, in 160-point increments; 100,000 max. Cabling from base to test points boxes must be 200 feet (60 meters) or less.

Low Voltage Test

2 Wire

  • Voltage: Standard 2.5 V max
  • Current: 1 μA, 10 μA, 100 μA, 1 mA, 10 mA ±2%
  • Resistance: 0.1 Ω to 1M Ω ±2% ±0.1 Ω

4 Wire

  • Voltage: Standard 2.5 V max
  • Current: 2 μA, 20 μA, 200 μA, 2 mA, 20 mA, 200 mA, 2 A ±2%
  • Resistance: 0.001 Ω to 100 Ω ±2% ±0.001 Ω

Component Tests

  • Diodes: 0 to 2.5 V
  • Resistors
    • (2-wire) 0.1 Ω to 1 MΩ ±2%
    • (4-wire) 0.001 Ω to 1 MΩ ±2% ±0.001 Ω
  • Capacitors: 10 pF to 5000 μF ±10% ±50 pF
  • Twisted Pairs: Verify proper pairing in twisted pair cables

High Voltage Test

Insulation Resistance Test
  • Voltage: 100 to 1500 VDC ± 5%, 10 to 100 VDC ± 5V
  • Resistance: 5 MΩ to 1000 MΩ ±10%
Dielectric Withstand Test
  • DC Voltage: 100 to 1500 VDC ± 5% or 10 to 100 VDC ± 5V
  • AC Voltage: 100 to 1070 VAC ± 5%, 10 to 100 VAC ± 5V
  • Dwell: 10ms to 120s; 2 to 7,200 cycles
  • Current Limit: (DC) 10 μA to 2.5 mA, (AC) 10 μA to 2.5 mA (RMS)
  • Max Capacitance Per Net: 30 nF @ 1500 VDC, 9.5 nF @ 1000 VAC
  • HV Energy Limit: 35 mJ
  • HV Charge Limit: 45μC

Max Points Per Net


Digital Input/Output

10 Inputs / 10 Outputs, 30 V open collector, +12 V and +5 V each currently limited to 140 mA

Test Point Interface

96 pos. Female VME Eurocard connector-32 pos. loaded

PC Requirements

  • Test Station: 2.0 GHz min. processor speed, Windows 10® Pro or Windows 11® Pro, 15 GB hard drive space, 4 GB RAM, 256 MB min. video memory, 1024 x 768 min display resolution, sound (for audible feedback), USB 2.0 or 3.0 port.
  • Optional Network Database Server: As above except no sound or USB ports required. Windows 10 Pro®, Windows 11 Pro®, Windows Server 2012®, Windows Server 2016®, Windows Server 2019®


115 / 230 V 50/60 Hz

Dimensions (width x height x depth)

17.4 x 6.3 x 17.4 in. (44.1 x 16.0 x 44.2 cm)

Note, all dimensions are are rounded up from their real measurements.


42 lbs (19kg) (fully loaded base or expansion unit)



CH2 Datasheet

Version 2023.4.1  |  853.61 KB

Product Options

CH2 High Voltage Cable Tester

CH2 Base Unit (CCH2-BU)

CH2 Expansion Scanner Chassis (CCH2-SC)

CH2 160-Point Test-Point Scanner (CCH2-HA)

Each CH2 Expansion Unit can accommodate up tp five 160-point scanners.

CH2 energization unit

CH2 Energization Unit (CCH2-ES)

  • Energize lamps, LEDs, relays or other devices needing external power
  • Connected to a CH2 test system using the same cable as a standard expansion box
  • Design your test to accommodate a wide variety of external power needs using Easy-Wire software
  • Power supply port on the back of the box to plug in your selected power supply
  • Optional Programmable Power Supply
  • Adjust voltages to multiple values within one test program
Energization Specifications
  • Energization Points: 160 – 800 Points (in 160 pt. increments)
  • Max Current: 2 AMPs
  • Fixed Voltage Supplies: 5, 12, 15, 24, 28, & 48 Volts
  • Agilent Variable Supply: 0 to 60 Volts
  • Interfacing to E-Unit: Standard AC61-KF cabling

Advanced Test Instructions (AI-TESTER)

Provide full control over the measurement test voltage and current.

  • Additional test instructions expand the tester’s capability
  • Integrate external meters, such as a Keithley 24xx series source meters or Agilent 344xx series DMMs to make high accuracy measurements using those instruments
  • Integrate variable power supply using the Energization Unit
  • Different voltages for different applications in the same test program
  • Test: Transzorbs, Zener Diodes, Gas Discharge Tubes etc.
  • Test Relays: Single Coil, Multi Coil, Pull-in-voltages, Drop-out-voltages etc.
  • Test Light/Indicators: Single Lamp and Multi Lamps up to 60V
  • Test Leakage Current: Diodes, Transistors, MOSFET’s, Integrated Circuits, etc.
  • Highly Accurate Voltage or Current Measurements: With integrated Keithley 2400 series meter

Learn More

Digital IO (SIO-EW-CUS)

Turn on access to the built-in Digital IO, 10 Inputs / 10 Outputs, 30 V max, open collector.

Cirris Server (LANL-EW)

Provides a network database for all connector definitions and test programs. Strongly recommended to ensure compatibility between all test stations without importing and exporting. Additionally provides a centralized location for backup and test data access.

Cirris Tester Access API (CTA-EW)

Alternatively control the tester with a third part applications written in LabVIEW, Python, C, C#, C++ and Delphi.

OPC UA Server (OPC-EW)

Transmit tester status and test information in real time to other information systems or equipment.

CH2 Performance Check Kit (PCHK-C2)

Verify calibration with the performance check kit. The certificate of calibration included with a performance check kit is valid for two years.

Product Documentation & Software

Getting Started

User Manuals

Learn how to set up and operate your 8100 tester.


CH2 Getting Started Guide

Version 2021.4.1  |  1.88 MB


CH2 User Manual

Version 2023.3.0  |  12.00 MB


Easy-Wire® Software

Easy-Wire Software controls the CH2 tester. If networking, the Cirris Server Software must be the same version as the Easy-Wire Station Software.


Easy-Wire Station

Version 2023.4.4.8025  |  337.46 MB
MD5 Checksum: 04f51953c8a804f8524ff7af3082b457 Cirris...

Supporting Documentation & Software

Cirris Server

Allows testers running Easy-Wire to be networked together storing test programs and test data in a central network location. Software version must be the same version as your Easy-Wire install. Contact your Cirris salesperson to purchase and receive unlock password.


Cirris Server Install

Version 2023.4.4.8025  |  306.82 MB
MD5 Checksum: 09199eae1021bd544c1e9bc7a12d8c6e ...


Cirris Server Installation Guide

Version 2023.4.2  |  197.94 KB


Advanced Instructions


Advanced Instructions User Manual

Version 2023.4.2  |  3.54 MB


CH2 Performance Verification


CH2 Performance Verification Manual

Version 2021.2.0  |  1.38 MB

Additional Documentation & Software

Easy-Wire Scripting

Scripting allows customization of the test process and reports. Scripting is an optional feature. Use Easy-Wire scripting when the tester is being controlled by Easy-Wire.


Easy-Wire Scripting Manual

Version 2017.4.0  |  1.80 MB


Cirris Tester Access API (CTA)

Allows the tester to be controlled by a third party application such as LabVIEW, C++, C#, Python, and Delphi.


Cirris Tester Access (CTA) User Manual

Version 2023.2.0  |  536.15 KB


Format Conversion Utility

This utility allows you to import test data from a spreadsheet or delimited text file.


Format Conversion Utility

Version 2019.1.1  |  608.35 KB


CH2 Earth Ground Point Support (EGPS)

CH2 setup for testing devices that are connected to earth ground.


CH2 Earth Ground Point Support (EGPS)

Version 2018.2.0  |  757.73 KB



Allow your the tester to recognize an adapter cable and automatically map its test points.


Smart-Lights Quick Start Guide

Version 2021.4.0  |  670.43 KB


CH2 Connector Saver

How to set up and use CH2 Connector Savers.


CH2 Connector Saver

Version 2018.2.0  |  1.45 MB


ACCH Backshell


ACCH Backshell

Version 2020.3.1  |  284.79 KB


CH Hood Clip


CH Hood Clip Instructions PDF

Version 2015.17.2  |  767.35 KB


Header Strip

Provides a strip interface connector to interface to individual Smart-Light adapters and not waste test points.


Header Strip Transition Board

Version 2014.3.0  |  1.11 MB


Traditional Cable Interface Demos

Training documentation that for traditional cable interface harness boards.


CH2 & CR Demo

Version 2011.1.0  |  7.28 MB


Smart-Light Demos

Training documentation that goes with harness boards that use Smart-Light interface cables.


Smart-Lights Demo

Version 2019.2.0  |  8.56 MB