FBI 100 Retired

Feedback Loop Isolator for Audio and Video
Key Features
  • Selectively cuts VCR input path or output path to prevent AV feedback loop through VCR
  • Active circuitry provides high performance and noise-free operation
  • Dual-color LED indicates recording mode or playback/stop mode
  • Contact closure control for simple, automated operation
The Extron FBI 100
Model Version Description Part #
 FBI 100 VCR Feedback Loop Isolator 60-743-01 Retired

This product has been retired.

The Extron FBI 100 Feedback Loop Isolator is designed to prevent potential feedback loops when a VCR is used for both recording and playback in an AV system. As the VCR records signals through its AV input, such as from a video camera and microphone, it outputs the same signals back into the system. The FBI 100 prevents the audio feedback loop, represented as a progressively loud tone that can occur if the VCR output signal is routed back into its AV input via a switching system.

For example, feedback is likely to occur in a videoconference environment when mixed audio from the videoconference session is simultaneously recorded and introduced back into the system as an active source.

In record mode, the FBI 100 prevents feedback loops by directing the information to be recorded specifically to the VCR's AV input while isolating the VCR output from the rest of the system. For other VCR modes, such as playback and stop, the VCR outputs to the AV system as normal.

Contact closure control provides a simple means of selecting the record or playback/stop mode of the FBI 100. The FBI 100 is housed in a 1U, quarter rack width metal enclosure.