DiGiCo SD Rack - Manual (Page 6)

SD Rack
1-6
1.2 SD Rack Power
The SD rack has dual redundant hot swappable power supplies. The rack should be operated with both powersupplies on whenever
possible.
1.3 SD Rack Clocking
The SD Rack will receive clock sync from the connected console in normal operation. It can run run at 48KHz or 96khz when clocked by
the console. It is capable of running at 192KHz but this has not yet been implemented in current console software.
The SD Rack can also receive sync from its own internal clock at several different sample rates - see section 1.6.9 Rack Sample Rate
Additionally the rack can receive sync from an external word clock source when the word clock is connected to the rack's word clock in
port.
1.4 SD Rack Cards
Several rack I/O card options are available - I/O cards normally provide blocks of 8 signals.
A rack can be fitted with up to 14 I/O cards providing up to 56 inputs and 56 outputs.
Card options are:
Analogue Mic/Line Input card on XLR
Analogue Line Output card on XLR
AES Input card on XLR or BNC
AES Output card on XLR or BNC
AES Bidirectional I/O card on XLR or BNC
Aviom card (16 outputs occupying 2 rack slots) - CAT5 connector
AES42 Mic Input card on XLR
HD/SDI 8 Channel Embed/De-Embed I/O card on BNC