Low Voltage
Harness Tester

The 8100 is a practical and capable wire harness test system. Its small, compact units are non-intrusive to your space and can be expanded to accommodate the number of test points for your needs. Fast test setup and software-guided cable assembly make it easy learn and operate.

The 8100 will be replacing the CR Tester.

The 8100 low voltage tester is driven by the powerful Easy-Wire® software. It’s compact and flexible to integrate with your production process.

The system is expandable to 100,000 test points​ and capably represents and tests complex wire assemblies, including electrical components. The test system allows operators to view connector images with target pin locations during the assembly process or rework. Its compact size means it is non-intrusive at the workstation, can be mounted on the back of a harness board, or can be distributed with other 8100 units around the device to be tested.

Optional Digital IO, OPC UA, and an API allow the tester the flexibility to integrate with factory automation.​



Compact & Expandable

Each unit accommodates up to 256 test points, expandable to 100,000 points with additional units. It’s small size makes it nonintrusive and easy to distribute around a larger device.


Capable Testing

Flexibly test assemblies with passive components such as resistors, diodes, capacitors. Capable of higher accuracy 4-wire Kelvin resistance measurements and custom measurements with Advance Instructions.


Operator Guidance

Graphical representations with visual and audio operator prompts simplify the build process and troubleshooting. Compatible with Cirris Smart-Lights®.


Resistance & Touch Probing

Probe can be used to identify points and make resistance measurements. Wrist strap allows finger-touch identification of test points.

USB Jack

Portability Option

Power for base unit is sourced from PC/USB connection allowing for mobility using laptop battery power if needed.


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 256 test points per base or expansion unit. Expandable up to 100,000 max test points. Expansion units may be distributed up to 200″ (60 m) from the base.

Low Voltage Test

2 Wire

  • Voltage: 3.3 VDC Standard
  • Current: 0.1 μA to 10 mA
  • Wire Resistance: 0.1 Ω to 100 Ω ± 2% ± 0.1 Ω
  • Insulation Resistance Max: 3 MΩ ± 2% ± 0.1 Ω

4 Wire

  • Voltage: 3.3 VDC Standard
  • Current: 0.1 μA to 10 mA
  • Wire Resistance: 0.005 Ω to 100 Ω ± 2% ± 0.005 Ω

Component Tests

  • Diodes: 0 to 6 VDC
  • Resistors: 0.1 Ω to 3 MΩ ± 2% ± 0.1 Ω
  • Capacitors: 100 pF to 1000 μF ± 10% ± 50 pF
  • Twisted Pairs: Verify proper pairing in twisted pair cables

Max Points Per Net


Digital IO (Optional)

8 outputs and 20 output/inputs, sinking (NPN) outputs, 28 V max; IO card requires one test point card position.

Test Point Interface

64 position shrouded .1” latching male header

User Interface

PC Requirements

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


Powered from PC USB connection; Large systems may require auxiliary power from USB hub or wall transformer.


3.3” H x 5.6” W x 7.5” L (8.3 cm x 14.3 cm x 19.0 cm)


3.2 lbs (1.5 kg)



8100 Datasheet

Version 2024.1.1  |  279.13 KB

Product Options

8100 Base Unit (CC81-BU)

8100 Base Unit with 256 test points and one Easy-Wire Software license.

8100 Expansion Unit (CC81-EX)

Each 8100 Expansion Unit provides 256 additional test points but must be connected to an 8100 test system that has an 8100 Base Unit connected to the operating PC.

8100 Base Unit with 64 test points (C8100-BU-64)

Economized for low test point applications.

8100 Base Unit – 192 Test Points with digital IO (C8100-BU-IO)

IO card requires one test point card position, leaving 192 test points.

8100 Base Unit – 64 Test Points with digital IO (C8100-BU-64-IO)

Low point count tester with digital IO.


All IO and reduced-point testers are compatible with 8100 Expansion Units.

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.

Advanced Test Instructions (AI-TESTER)

Provide full control over the measurement test voltage and current. Make isolated capacitance and resistance measurements between selected test points.

Learn More

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.

8100 Performance Check Kit (PCHK-81)

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.


8100 Getting Started Guide

Version 2023.3.8  |  2.10 MB


8100 User Manual

Version 2023.3.3  |  14.33 MB


Easy-Wire® Software

Easy-Wire Software controls the 8100 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...


Migration Guide

A guide for transitioning from the CR tester to the 8100 tester.


CR to 8100 Migration Guide

Version 2023.3.0  |  157.52 KB

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.


Cirris Server Install

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

Software version must be the same version as your Easy-Wire install. Contact your Cirris salesperson to purchase and receive unlock password.


Cirris Server Installation Guide

Version 2023.4.2  |  197.94 KB


Advanced Instructions


Advanced Instructions User Manual

Version 2023.4.2  |  3.54 MB


8100 Performance Verification


8100 Performance Verification Manual

Version 2023.3.2  |  2.60 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



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


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