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4
Silent Sentinel
®
Standard Installation and Operation Manual
OVERVIEW
Product Overview
The Broadcast Tools
®
Silence Sentinel
®
Standard is designed to monitor any two
stereo analog audio sources for silence or an out of phase condition, polarity, gener-
ate alarms and transparently switch to a back-up source using mechanically latching
relays. Additional features include: front panel controls, remote control inputs and
status outputs; plug-in euroblock screw terminals; dipswitch selection of silence
detection of -20, -25, -30 and -35db below zero reference; precise alarm timing
delay from off to 85 minutes; precise restore timing delay from off to 21 minutes.
The Silence Sentinel® Standard may be set on a desktop, mounted on a wall or
optional RA-1 rack shelf for mounting up to three units in 1-RU.
Features/Benefits
•
Transparent stereo program switcher with front panel input selection switches
and indicator LED’s.
•
Front panel “Manual/Automatic” switch with front panel LED, remote input
and open collector status output.
•
Stereo output LED level display.
•
“External Ext” alarm trigger input with front panel LED indicator.
•
Front Panel Power/Heartbeat LED.
•
Dipswitch selection of silence detection of -20, -25, -30 and -35dB below
zero reference.
•
Dipswitch selection of reverse polarity (out of phase) detection.
•
Dipswitch selection of alarm time delay from OFF to 8 minutes, 30 seconds
in 2 second increments or 85 minutes in 20 second increments.
•
Dipswitch selection of restore timing delay from OFF to 21 minutes in 20
second increments.
•
Audio switching via mechanical latching sealed relays utilizing 2-form-C
bifurcated - crossbar silver alloy with gold overlay contacts.
•
Two independent SPDT alarm relays and LED indicators.
•
Two pulse open collector alarm outputs.
•
Active balanced stereo input level monitoring.
•
Logic functions via microprocessor and non-volatile memory.
•
Plug-in euroblock screw terminals, mating plugs supplied.
•
Fully RFI proofed.
•
Surge protected internal power supply, PS-1515 universal swi/-
15VDC power supply with domestic connectors supplied. International AC
connectors optional.
•
Each unit may be set on a desktop, mounted on a wall or rack-mounted with
the optional RA-1 rack shelf for mounting up to three units in 1-RU.
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product updates and
additional information.
