Extended family of high accuracy PXI and PXIe precision resistors

27-05-2022 | Pickering | Subs & Systems

Pickering Interfaces offers new models in its high-density precision resistor module family, enhancing sensor simulation accuracy. The updated 40-297A (PXI) and the new 42-297A (PXIe) modules are now offered with additional resolutions - 0.125-Ohm, 0.25-Ohm, 0.5-Ohm, 1-Ohm, 2-Ohm, 4-Ohm and 8-Ohm - extending the resistance range to 85.3MOhm on a single six-channel module. The setting accuracy is now +/-0.1% +/-resolution (was +/-0.2% +/-resolution). These further models enable its simulation products to address even more applications than before.

Comments Paul Bovingdon, simulation product manager at Pickering Interfaces: "The new modules provide a simple, accurate solution for functional test systems in applications such as engine-controller testing where resistive sensors (thermistors/RTD) provide information such as temperature and altitude. We believe that these new models will find acceptance in areas such as satellites, aerospace and defence projects. As we have added more choices, the Product Selector on our website is there to help choose the right model for your application and even compare specifications of multiple models."

The 4x-297A's channels may be set as short or open circuit to simulate a wiring or sensor fault, and up to 18 channels can fit into a single-slot module. The usage of resistor value calls simplifies software control. The module works out the channel setting nearest the requested value and sets that value. The user can interrogate the module to find the exact resistance setting utilised by the module.

A calibration cable may be attached to the module enabling a DMM to verify each channel. This greatly simplifies the checking of the module's calibration. Verification is performed with the UUT disconnected from the module. VISA and Kernel drivers for Windows, a universal driver for Linux and support for other Real-time systems, including QNX and LabVIEW RT, are provided. Like all of its modules, these carry a three-year warranty.

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