The 3U PXI module is software-configurable for a number of multiplexer modes. Multiplexer banks can be set in one-pole or two-pole mode, and interbank switching enables the channel count to be increased up to a maximum of 128 channels.
The 40-681 operates as a conventional multiplexer with break-before-make action when a new channel is selected. For two-pole configurations, multiple channels can be simultaneously selected without restriction. For one-pole configurations, the channels that can be simultaneously selected are limited by the use of two-pole switching.
The Model 40-681 costs $1463 and is supported by Pickering’s eBIRST switching-system test tools. eBIRST simplifies troubleshooting the switching system by quickly finding and identifying faulty relays.
Pickering Interfaces, www.pickeringtest.com