QuadTech 1880

Introduction

The 1880 Milliohmmeter provides ease of use, digital display and excellent accuracy for performing low resistance measurements on switches, relays, connectors and a variety of other devices. The instrument offers a wide measurement range, from 1 μohm to 2 Mohms, with constant current ranging from 1 A to 1 μA. A built-in comparator makes
the unit ideal for go/nogo testing in a production environment and is also adaptable for use in automated system applications with it’s optional IEEE-488 interface.

Description

Precision Measurements The 0.05% accuracy of the 1880 makes for consistent, reliable test results from this economically priced unit. Nine measurement ranges, automatic or manually selectable, provide wide coverage between 2 Mohms and 1 μohm with constant current between 1 μA and 1 A.

Easy to Use

The 1880’s auto ranging and digital display means the instrument is ready to begin measuring on power-up, just connect the test device and meaningful results are immediately shown.

Automatic Zeroing

The device under test (DUT) is connected to the instrument front panel via a four-terminal Kelvin connection. This, along with the auto zero function for removing any stray resistance, renders very accurate low resistance measurements,
independent of the test leads being used.

Go/NoGo Testing

A built-in thumb wheel comparator for setting high and low limits provides for fast, simplified, pass/fail testing in a high volume production environment. A nominal value can also be set by the operator, where test results are shown as a positive
or negative percent deviation around this value.

Automated Testing

For automated system applications, the instrument includes an I/O interface connection with remote start and pass/fail outputs. An optional IEEE-488 interface is also available (or added later), which enables the 1880 to be used under
computer control.