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RS232C CONTROL
COMMANDS AVAILABLE FROM THE
MULTIPLEXER
ACK (0A)
Response when this unit receives a command.
NAK (0B)
Response if this unit did not receive the command.
ALARM (BF)
When there is an alarm, this command is sent as header. Then,
the alarm information is sent in a 1-byte transmission (see Table
3).
ALARM information (Table 3)
Bit
7
Alarm information
indication
6
5
Reserved
4
Reserved
3
Camera number
indication
2
1
0
OTHER COMMANDS
ENTER (40)
When numeric commands are all sent, this command is used to
enter the transmitted value.
CLEAR (56)
To erase multiple byte commands.
English
Bit state information
01: External
10: Video loss
11: Sensor alarm
0
0
0011: CAMERA NO. 4
0010: CAMERA NO. 3
0001: CAMERA NO. 2
0000: CAMERA NO. 1
37
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