17
Silence Detectors - RB-SD1IP 2
device contains files at a sample rate of 24 kHz, set the default sample rate
to 48 kHz range, which also supports the subfrequencies 12kHz & 24kHz, to
ensure the unit always boots up ready to play at the correct clock frequency.
Track Recall:
When this option is disabled, every time USB audio is routed to the output,
the playback will begin from the first available file. When this option is
enabled the unit will remember the previous track it was playing out from
USB and upon USB audio being routed to the output, playback will begin from
the start of the next available file. Note that Track Recall will be lost when the
unit is powered down, or when the USB device is removed.
Looped Playback:
When enabled, this option will play all valid audio files on the USB device in a
loop whenever USB audio is route to the output. When this option is disabled
the audio files on the USB device will only be played through once, per
instance, of the USB audio being routed to the output.
SNMP Trap Generation:
The unit can generate SNMP Traps to inform a Network Management System
(NMS) that a USB device has been plugged into, or unplugged from the front
of the unit.
Main and Aux Indicators
On the front panel there are four Main indicators and four Aux indicators.
Each left/right channel has a Program Content and Alarm Status indicator. The
Program Content Indicator represents the input signal level for that channel
and the Alarm Status LED indicates whether the channel has dropped below
the threshold for longer than the time selected.
Both the Main and Aux inputs are continuously monitored so that you can
check that your backup signal is operating correctly, as well as your main
input source.
Note:
Although one channel of the stereo input may have alarmed, the main
alarm may not be set, due to the setting of the Stereo/Mono Dipswitch.
Source Select and Indicator
The preferred Main input source is selectable via a recessed push button
switch on the front panel, or it can be controlled remotely (pin 10) and from
the GUI. This allows you to define whether input A, or input B is going to
be the Main audio input. There is an LED to indicate which state the source
select is in:
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
The GUI can be used to configure the source select LED to indicate the
current input which is being routed to the output. In this case:
LED
Description
LED On
Input A is being routed to the output
LED Off
Input B is being routed to the output
LED Flashing
USB Audio is being routed to the output
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.
Auto/Manual Mode Selector and Indicator
The Auto/Manual 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, it can be controlled remotely (pins
3 and 4) or by using the GUI.
