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7
Silence Sentinel
®
Basic Installation and Operation Manual
PROGRAMMING
Delay timing setup
The delay period is the time between when valid audio fails and when an alarm is
triggered. The Silence Sentinel® Basic time delay is set by the first four switches
on SW1, along with dipswitch 9. SW1-9 provides TWO second resolution when
OFF. To provide longer time resolution, turn on SW1-9 which will provide 20 sec-
ond resolution. The switches are set at the factory for a 2 second delay (SW1-1, ON
factory default).
Restore timing setup
The restore period is the time between when valid audio returns and when the alarm
is cleared. Restore time is set by SW1, switches 5 and 6. This function may be
turned OFF by setting both switches OFF (factory default).
Trip (input sensitivity) level setup
The trip levels are referenced at zero. Switches 7 and 8 are used to set the stereo or
dual monaural trip levels. The factory default is both switches OFF, (-20). We rec-
ommend setting the trip level to -25 for most installations.
Delay Resolution setup
SW1-9 sets the delay timing for either 2 seconds or 20 seconds. Factory default is
(OFF) 2 seconds.
Stereo / Dual (Independent) monaural setup
SW1-10 determines stereo or dual monaural (Independent) operation. When this
switch is OFF, (factory default) stereo operation is selected. With the switch ON,
dual monaural (Independent) operation is selected.
K2 function pulse length setup
With a jumper over the ON position of JPR1, K2 generates a 20 second pulse. When
the OFF position is selected, a 2 second pulse is set (Factory default). This is only
operational with the unit in stereo mode. This function could be used to trigger an
external AC power relay to reboot equipment. In dual monaural (Independent)
mode, K1 is associated with input one and K2 is associated with K2.
NOTE: The front panel must be removed to access this jumper (refer to the
configuration and wiring sheet) in the appendix.
