Pickering extends resistance range of PXI and PXIe precision resistors
Two models have been added to Pickering Interfaces’ high-density precision resistor module family. The company has updated the 40-297A (PXI) and added the 42-297A (PXIe) modules.
The 40-297A and 42-297A modules are available with additional resolutions – 0.125, 0.25, 0.5, 1.0, 2.0, 4.0 and 8.0 Ohm to extend the resistance range to 85.3MOhm on a single six-channel module. The setting accuracy is now +/-0.1 per cent +/-resolution, compared to the previous figure of +/-0.2 per cent +/-resolution). The additional models allow simulation products to address more applications than was possible before, confirmed the company.
The 4x-297A’s channels can 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 use of resistor value calls simplifies software control and the module works out the channel setting closest to the requested value and sets that value. The user can interrogate the module to find the actual resistance setting used by the module.
A calibration cable can be attached to the module allowing a DMM to be used to verify each channel. This simplifies the checking of the module’s calibration considerably, said Pickering. Verification is performed with the unit under test (UUT) disconnected from the module. Visa and kernel drivers for Windows, a universal driver for Linux and support for other real-time systems such as QNX and LabVIEW RT are supplied.
In common with all Pickering modules, the 40-297A (PXI) and 42-297A (PXIe) modules carry a three-year warranty.
According to 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”. Target applications are in satellites, aerospace and defence projects, he added.
Pickering Interfaces designs and manufactures modular signal switching and simulation for use in electronic test and verification. The company offers a range of switching and simulation products for PXI, LXI, and PCI applications. It also provides cable and connectors, diagnostic test tools and application software and software drivers created by the in-house software team to support these products.