Specifications

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8
Silence Sentinel
®
Basic Installation and Operation Manual
OPERATION
Operational Guidelines
Front panel descriptions
The front panel DIP switch setup functions are laid out using the grid on page SIX
of the manual. The front panel disable switch is used to disable or reset an alarm
condition. The switch is a latching type device. When engaged, the unit is disabled.
To remotely disable the unit, leave the front panel switch enabled (out) and apply a
ground (sustained) to the remote disable input on the rear panel.
The LED indicators are described on the top cover label and in the appendix.
Stereo Mode operation
When the Silence Sentinel® Basic is “Enabled”, it will trigger in the absence of
audio (see trip level setup) on either or both channels after the delay time has expired
(See delay dipswitch SW1-1 thru 4 and SW1-9) which will cause the following
action:
1 - The front panel “OK LT” and/or “OK RT” audio LED’s will extinguish.
2 - The failed alarm led’s “ALM LT” and/or “ALM RT” and relay K1 will activate.
3 – K2 pulses for either 2 or 20 seconds.
Note: K2 will generate a pulse of a duration determined by JPR1.
When both channels return and the restore time delay has expired (if enable), the fol-
lowing action occurs:
1 – K1 opens.
2 - The front panel “OK LT” and “OK RT” audio LED’s will illuminate
3 - Either or both “ALM LT” or “ALM RT” led indicators will stay illuminated to
provide history of the alarm until reset. To reset an alarm, press (pull the remote
disable input to ground) in the disable (alarm reset) switch and then press again
to release the switch.
Dual Monaural (Independent) Mode Operation
When the Silence Sentinel® Basic is enabled, it will trigger in the absence of audio
(see trip level setup) on each of the independent channels after the delay time has
expired (See delay dipswitch SW1-1 thru 4 and SW1-9).
The Silence Sentinel® Basic when triggered will cause the following action:
1 - The failed “ALM LT1” and/or “ALM RT2” led(s) will illuminate.
2 - Either or both relays K1 and K2 will close.
When either audio channel returns,
and the restore time delay has expired (if
enabled), the following action occurs:
1 - Either or both relays (K1 and K2) will open.
2 -The failed “ALM LT1” and/or “ALM RT2” led indicators stay illuminated to pro-
vide history of the alarm. To reset an alarm, press (pull the remote disable input to
ground) in the disable (alarm reset) switch and then press again to release the switch.
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