Manual

Chapter 10 - RB-SD1 Silence Detection Unit
10-6 Redbox User Handbook
10.4. Front Panel Selectors and Indicators
Fig 10-4: RB-SD1 Front Panel
10.4.1. Source Select and Indicator
The normal Main input source is selectable via a push switch accessed via a hole
located on the front panel, or it can be controlled remotely (pins 13 and 14). This
allows you to define whether input A, or input B is going to be your Main audio input.
There is an LED to indicate which state the source select is set:
LED Description
LED On Main source is input A, Aux source is input B
LED Off Main source is input B, Aux source is input A
Note : If the unit is powered off, for example during a black-out, input A routes
through to the output. Therefore if the unit is subject to a power fail while the main
source is set to input B, the unit will output source A.
10.4.2. Mode Selector and Indicator
The Mode Switch defines how the unit should operate during an alarm condition,
when the main audio source returns. There is an option to allow the device to switch
back Automatically or Manually. The mode is selected by a push switch accessed
through a hole on the front panel with a corresponding LED to represent its state, or
it can be controlled remotely (pins 5 and 6).
LED Description
LED On Automatic Mode – During an alarm condition when the main source
returns, it is switched back automatically, although there must be
a continuous signal present for two seconds before it switches.
LED Off Manual Mode – When the alarm condition is reached, the LED
begins to flash.
LED Flashing Manual Mode – The main audio has returned after an alarm
condition. To switch to the main source, push the Restore button
(or control it remotely).
RESTORE
ALARM
MODE
AUTO
SOURCE
MAIN B
LED ON
LED OFF
LED FLASH
MAIN A
PRESS RESTORE
MANUAL NORMAL
MAIN
ALARMALARMPROG PROG
LEFT RIGHT LEFT RIGHT
AUX
A
LARMALARMPROG PROG
RB-SD1
SILENCE DETECT
10.4.3 10.4.1
10.4.2
10.4.4