Rackmount RF autosense fault switch automatically detects fault conditions and switches upon failure of the selected input

The 4091A is a 1U rackmount fault sense switch that accepts two RF inputs and produces eight outputs (chosen from the two inputs). In Auto mode, the unit automatically switches upon failure of the selected input.

Redundant Hot Swappable Power Supply
The 4091A comes standard with a single HOT SWAP AC power supply and can be configured with redundant HOT SWAP AC or DC power supplies.

LED Signal Status
The front panel provides green LED display status for the selected input.

Front Panel Control Switch
Front panel control switch toggles between manual operation or "auto" mode. When in "auto" mode, the unit automatically switches upon failure of the selected input.

Remote Monitoring
An Ethernet port on the rear panel provides the capability to remotely monitor the status of the input and all output signals.

Key Features


  • 1-20 MHz Operation
  • 8 Signal Outputs
  • Manual Override
  • Remote Control via Ethernet
  • Redundant Hot Swap Power Supplies Available
  • Option: AC Hot Swap Power Supply
  • Option: DC Hot Swap Power Supply



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  • Test facilities
  • Engineering laboratories


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