PXI Dual 1000Base-T1 Multiplexer Module
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PXI Dual 1000Base-T1 Multiplexer Module
PXI Dual 1000Base-T1 Multiplexer Module
PXI/PXIe 1000Base-T1 Fault Switch Module
PXI Dual 1000Base-T1 Multiplexer Module
PXI Dual 1000Base-T1 Multiplexer Module
PXI/PXIe 1000Base-T1 Fault Switch Module


The 40-204-002 (PXI) and 42-204-002 (PXIe) are dual channel differential multiplexers designed to simulate common faults on high-speed two wire communication interfaces such as 1000Base-T1. They are available with support for 1 or 2-channels of two wire serial interfaces. Each channel pair can be looped out to external equipment or the switches can be used simulate a channel open fault. Using the fault bus, switches can simulate a short between both wires or a short to one of two externally applied fault conditions – such as battery supply or ground - via two fault buses.

Each channel can carry up to 0.8 A and is rated up to 200 V between wire pairs. The wire pairs have controlled transmission line impedance suited to most differential signalling systems, including high-speed 1000Base-T1, the fault buses are capable of carrying 0.8 A and also have controlled transmission line impedance. The front panel signal connectors are easy to use MMCX which are fully supported by our range of connector accessories. The module uses high quality electro-mechanical relays designed for high frequency application with long service life.

Key Features

  • Available as PXI or PXIe Modules
  • Suited for 1000Base-T1/100Base-T1 Switching
  • Fault Insertion on 1 or 2 Channels of 2 Wire Connections
  • Dual MUX for External Systems
  • Controlled Transmission Line Impedance
  • Simple Insertion of Shorted Pair, Open and Battery/Ground Connection
  • Drivers supplied for Windows and Linux, plus support for Real-time systems
  • Supported by PXI or LXI Chassis
  • 3-Year Warranty
* Note: Product image above may be a different model in this range and is for illustrative purposes only

Product specifications

If no specifications are present, please see the product datasheet in this section. 

Please note: In some cases, for products like our Scalable LXI Chassis, the specifications can be found on the datasheets for the associated plugin modules that are inserted into these chassis. To find these modules, go to the "Also in the Range" link above.

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Product Type: Fault Insertion Switching
Platform: PXI, PXIe
Switch Type: EMR
Fault Buses: 2
Max I (A): 0.8
Max V DC: 200
Channels: 2


PDF Datasheet
Includes full information and specifications
PDF, 860.94 KB
PDF Manual
Includes manual, extended specifications, installation instructions and data
PDF, 2.51 MB
Related RF Connector Accessories Datasheet
A complete list and documentation for mating connection accessories
PDF, 498.75 KB
Software drivers & downloads for Switching & Simulation Products

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