Handbook

Redbox User Handbook No 1
111
Front panel LED indicators by the MAIN and AUX buttons show individually left and right
programme and alarm conditions for both the main and auxiliary inputs.
A powerful feature of the RB-DSD1 is that by using the Sonifex SCi serial software, the unit
can be programmed for dierent delay durations, levels and switching functions so that you
can programme the unit for your specic application. A front panel DIPSwitch congures the
unit to be controlled serially and a front panel LED indicates serial operation. Contact Sonifex
for further information if you have a particular requirement that isn’t catered for by the
RB-DSD1 as standard.
The RB-DSD1 has been designed to have a passive signal path through the main input, so
if power to the unit fails, signal input 1 is routed to output 1 and signal input 2 is routed to
output 2. This is essential for applications such as installation at transmitter sites, where a
power failure to the unit should not prevent the audio input signal from being output to the
transmitter. Note: This applies to the AES/EBU & S/PDIF I/O, but not the TOSLink optical I/O.
Fig 10-2: RB-DSD1 System Block Diagram
S/PDIF
S/PDIF
Optical
AES
Optical
S/PDIF
Freq Select
AES Sync
Word Clock
Video Optional
Digital Source
Select
Digital Input 1
Digital Input 2
Clock
Select
Master
Clock
Generation
VID RX
AES RX
WC RX
AES
RX SRC
AES
Optical
S/PDIF
RX SRC
DSP
Digital Output 2
Digital Output 1
AES
Optical
TX
TX
Power
Failure
Relay
Power
Failure
Relay
Fig 10-3: RB-DSD1 Front Panel Controls and Indicators
Reset
Button
Duration
& Serial
Settings
Serial
LED
Level
Settings
Stereo/Mono
& Sync
Settings
MAIN
Button &
Indicators
AUX
Button &
Indicators
RESTORE
Button &
Indicator
SYNC
Button &
Indicators
Front Panel Controls and Indicators
The LED in the front panel is normally red to indicate power to the unit.
10
SYNCHRONISERS, DELAYS &
SILENCE DETECTORS
SYNCHRONISERS, DELAYS & SILENCE DETECTORS - RB-DSD1