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Front Panel Selectors and Indicators 3
Front Panel Selectors and Indicators
Fig 3-1: RB-SD1IP Front Panel
Power Indicator
A single red LED confirms the presence of an active power supply to the
unit.
Reset Button
The recessed reset button allows you to perform a hardware reset on the
unit without powering down.
USB Port
The USB port enables the unit to act as a host for low power mass storage
devices (such as flash drives) which are formatted to either FAT or FAT32.
Such devices may be used for the playback of audio files.
The USB functionality is configured using the browser based GUI and allows
you to play out wave (.wav) files in the event of both the Main and Auxiliary
sources falling silent. The currently supported file format is .wav extensions
in PCM 16 bit Stereo encoding.
The unit supports the following sample rates: 8 kHz, 11.025 kHz, 12 kHz, 16
kHz, 22.050 kHz, 24 kHz, 32 kHz, 44.1 kHz, 48 kHz
Only files located in the root directory of the USB device will be available
for playback. The unit supports a playlist in the form of an ordered list of
filenames delineated by a new line.
For example:
Track_05.wav
Track_01.wav
03_Song.wav
Melody.mp3
customer_message.wav
The playlist file should be designated “playlist.txt” or “playlist.m3u” and
placed in the root directory with the audio files. Any files in the list which
are invalid (such as the .mp3 in the above example) or not present will be
ignored. If a playlist is not present then the audio files will be played out in
the order of their creation on the USB device.
Note:
It is recommended that files of a single sample rate range are used
in order to avoid a small delay (up to 3 seconds) between the playback of
tracks with sample rates in different frequency ranges.
The USB audio playback feature can be remotely enabled or disabled using
the GUI. Other USB audio options include: Default Sample Rate Selection,
Track Recall, Looped Playback and SNMP Trap Generation.
Default Sample Rate:
This option sets up the system clock to be ready to play out files with a
sample rate from a specific frequency range. For example; if your USB
USB
Socket
Reset
Button
Power
LED
Source Select
Switch and
Indicator
Restore Button
and Alarm
Indicator
Auto/Manual Mode
Switch and Indicator
Main
Indicators
Aux
Indicators
