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12
Silent Sentinel
®
Standard Installation and Operation Manual
OPERATION
When both stereo channels on Input 1 return to normal (above the silence sense
threshold) the following action occurs:
1. The front panel Input 1 ACT LED will light to indicate that the audio on both
of the Input 1 stereo channels is above of the silence sense threshold.
2. After the restore delay time has expired with the audio above the silence
sense threshold (if configured) the unit will automatically switch back to the
primary input (Input 1.)
3. The ALM1 alarm LED and open collector output will de-activate. The K2
relay will open and the K1 relay will close.
When the Silence Sentinel
®
Standard is in Manual (manual switching) mode the fol-
lowing actions will occur when silence is detected:
1. The front panel Input ACT LED will extinguish to indicate that the input
audio on one or both of the inputs stereo channels has dropped below the
silence sense threshold.
2. After the alarm delay time expires the unit will automatically the ALM1
and/or ALM2 alarm LEDs and open collector outputs will activate. If silence
is detected on both inputs the IROC open collector output will activate.
NOTE: If phase monitoring is enabled the alarm LEDs will flash to indicate
phase-cancellation has been detected and the AMOC open collector output will
activate.
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