Handbook

100
Redbox User Handbook No 1
SYNCHRONISERS, DELAYS &
SILENCE DETECTORS
SYNCHRONISERS, DELAYS & SILENCE DETECTORS - RB-SD1
9
Additionally, the RB-SD1 can be programmed for specic applications, which can be
dened on power-up of the unit, e.g. for extended silence detect times. See page 105 for
current additional power-up modes, or contact Sonifex for further information if you have a
particular requirement.
The RB-SD1 has been designed to have a passive signal path through the main input, so
if power to the unit fails, the signal input will still be routed through to the output. 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.
System Block Diagram
Fig 9-2: RB-SD1 System Block Diagram
Rear Panel Connections and Operation
Fig 9-3: RB-SD1 Rear Panel
Mode
Restore
Push
Switch
Main Channel
Select
Push
Switch
Reference
Voltage Select
Monitored
Channel Select
A/B
Switch
Control
Output
Select
Summing
Amp
Summing
Amp
Digital
Pot
Control
Comparator
Stereo
Input A
Professional
Balanced
Stereo
Input B
Professional
Balanced
Left
Right
Left
Right
Stereo
Output
Professional
Balanced
Left
Right
Output Select
Default/Power Off
Select Input A
()
Microprocessor
0...9,A...F
Time Select
0...9,A...F
Mode Select
15 PIN
Remote
Connector
A Inputs
Time
Control
B Inputs
Stereo
Outputs
Remotes
Connector
Level
Control
Mode
Select