40-878 PXI MEMS RF Single 4-Channel Multiplexer
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The 40-878-211 (PXI) and 42-878-211 (PXIe) is a single 50 Ω 4 to 1 RF multiplexer with SMB connectors in a single PXI or PXIe slot. It is also available in dual or quad configurations.

The module is based on the latest micro-electromechanical system (MEMS) switching technology and has low insertion loss and VSWR. In addition, MEMS devices have a long operational life of >3 billion operations and benefit from an operating time of <20 μs allowing greater test system throughput. The multiplexers have excellent and repeatable RF characteristics beyond 4 GHz with each path having a nominally equal insertion loss. The 4x-878 minimizes the injection of noise and unwanted signals into the signal path by careful attention to the mechanical and electrical design.

Versions with MCX or SMB connectors are available, allowing users to simplify cabling issues by matching them to other connectors in their test system.

Key Features

  • Available as a PXI or PXIe Module
  • 4 GHz RF Multiplexer
  • Maximum RF Power to 25 W
  • Single, Dual and Quad Versions
  • SMB or MCX Connector Versions
  • Long Operational Life
  • Fast Operating Time
  • Drivers supplied for Windows and Linux, Plus Support for Real-time Systems
  • PXI Versions 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: RF and Microwave
Platform: PXI, PXIe
Switch Type: MEMS
Function: Mux
Z (Ω): 50
Max f (MHz): 4000
Banks: 1
Channels: 4


PDF Datasheet
Includes full information and specifications
PDF, 6.35 MB
PDF Manual
Includes manual, extended specifications, installation instructions and data
PDF, 3.97 MB
Related RF Connector Accessories Datasheet
A complete list and documentation for mating connection accessories
PDF, 498.75 KB
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