Active Silicon AS-CAM-40LHD-A, Technical Reference Manual

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Harrier series camera
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May 2021 www.activesilicon.com Page 31 of 61
Protocols
1. Timing
As Command processing can only be carried out one time in a Vertical cycle, it takes the
maximum 1V cycle time for an ACK/Completion to be returned. If the Command
ACK/Completion communication time can be cut shorter than the 1V cycle time, then every
1V cycle can receive a Command.
※
1V cycle
-
30fps mode: 33.3ms
-
60fps mode: 16.7ms
-
25fps mode: 40.0ms
-
50fps mode: 20.0ms
2. Communication parameters
⚫
Protocol: VISCA, Pelco-D, Pelco-P
⚫
ID: 1~7 (VISCA), 1~255(Pelco-D), 0~254(Pelco-P)
⚫
Baud rate: 2400, 4800, 9600, 19200, 38400, 57600, 115200 bps
⚫
Data bit: 8
⚫
Start bit: 1
⚫
Stop bit: 1
⚫
Non parity bit
Max 1V cycle
Command
ACK
RxD
TxD