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

 

Bit state information

7

Alarm information

01: External

6

indication

10: Video loss

 

 

11: Sensor alarm

5

Reserved

0

4

Reserved

0

3

Camera number

0011: CAMERA NO. 4

2

indication

0010: CAMERA NO. 3

 

1

 

0001: CAMERA NO. 2

0

 

0000: CAMERA NO. 1

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

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