Handbook

Redbox User Handbook No 1
49
SYNCHRONISERS, DELAYS & SILENCE DETECTORS - RB-DS2
7
SYNCHRONISERS, DELAYS &
SILENCE DETECTORS
Fig 7-2: RB-DS2 System Block Diagram
controlling the unit and there are 4 remote outputs which can be used for signalling. The
front panel controls can be locked-out for situations where remote control is being used to
run the unit, or where physical security is required.
Extended Mode using Compact Flash™
Extended mode allows the delay synchroniser to provide audio delays in excess of 4 hours
so that the unit can act as a broadcast time-zone delay. The memory card slot is internally
mounted and currently supports Compact Flash™ cards up to 2Gbytes - see page 67 for
information on opening the RB-DS2 to insert a CF card. To operate correctly, the ashcard
must support PIO Mode 4, or higher, such as the SanDisk Standard CF cards. The delay
synchroniser uses the DOS format with a 16bit FAT. If a Compact Flash™ memory card is
installed in the internal card slot, the status of the card will be indicated in the lower right
side of the display. If the card is not formatted, or the format is corrupted, the display will
show “NOFMT” indicating that the card cannot be written to until it has been formatted (see
System Menu: Memory Card for details on formatting the card). When the card is correctly
formatted, the capacity is shown in Mbytes.
The delay synchroniser generates a le on the Compact Flash™ memory card, prior to
starting the delay process, which eectively reserves all the space available and provides for
the largest possible delay. If the Compact Flash™ memory card was removed and placed in
a PC card reader, the le, named “RB-DS2.WAV”, would play using any utility that’s supports
Broadcast Wave Format - PCM les.
Note: Extended Mode can only be used for mono and stereo CHANNELS settings, not for
dual mono signals.
System Block Diagram
AES
Receiver
AES
Transmitter
Recovered
Clock
Master
Clock
Generator
Source
select &
Delay Control
AES/EBU
Digital
Input
Gain
Gain
Gain
Gain
AES/EBU
Professional
Balanced
AES/EBU
Digital
Output
Analogue
Outputs
L
R
L
R
Analogue
Inputs
Digital
Bypass
Control
Analogue
Bypass
Control
Digital
Bypass
Control
Analogue
Bypass
Control
ADC DAC