Black Box MXF9504-V11, Руководство пользователя

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Asynchronous Compression Rates
64Kbps Composite 19.2Kbps Composite 28.8Kbps Composite
8 x 9600 Async 2 x 9600 Async
1 x 2400 Async/Sync 3 x 9600 Async
1 x 2400 Async
1 x 1200 Async
7 x 9600 Async
1 x 9600 Sync 2 x 9600 Async
1 x 2400 Async 3 x 9600 Async
1 x 4800 Async
1 x 2400 Async
6 x 9600 Async
1 x 19200 Sync
Frame Length
Frame length is 160 bytes at 64Kbps i.e. a byte has an equivalence of 400bps. The frame
length is reduced at lower data rates to maintain a constant frame duration of 20ms.
Link Rate (Kbps) Frame Length (Bytes) Frame Duration (ms)
64 160 20
19.2 48 20
Frame Structure
Composite Rates 32.8Kbps - 64Kbps
4 x 40 Bytes at 64Kbps
S
1
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
C
1
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
C
2
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
C
3
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
S
1
Synchronising byte
C
1
- C
3
Configuration bytes
D Data bytes