Measuring Low-Resistance Devices; Introduction; Equipment Required - Tektronix Keithley SourceMeter 2461 User Manual

In this section:

Introduction

This application example demonstrates how to use the 2461 to measure a low-resistance device.
You may need to make low-resistance measurements (<10 Ω) in a number of applications. Typical
applications include continuity testing of cables and connectors, substrate vias, and resistors.
Typically, you make these resistance measurements by forcing a current and measuring the resulting
voltage drop. The 2461 automatically calculates the resistance. The measured voltage is usually in
the mV range or less. Built-in features of the 2461 optimize low-resistance measurements, such as
remote sensing and offset compensation.

Equipment required

•
One 2461 High-Current SourceMeter
•
For front-panel connections, use four insulated banana cables, such as the Keithley Instruments
Model 8608 High-Performance Clip Lead Set (one set included with the 2461; you will need
another set)
•
For rear-panel connections, use one Model 2460-KIT Screw-Terminal Connector Kit (provided
with the 2461), or you can use one set of Model 2460-BAN Banana Test Leads/Adapter Cables
(with appropriate connections to the device)
•
One low-resistance device to be tested; the application shown here uses a 20 mΩ resistor
Introduction ............................................................................... 5-1
Equipment required .................................................................. 5-1
Set up remote communications ................................................ 5-2
Device connections .................................................................. 5-2
Low-resistance measurements ................................................. 5-5

Measuring low-resistance devices

®
Instrument
Section 5