INTERFACE SPECIFICATIONS
ALARM STATUS SENSE(D5)
The external and video loss alarm states are indicated by a
6-byte response (see Table 2).
ALARM STATUS SENSE(D5) byte assignment
(Table 2)
First byte Second byte
Bit Bit
7 ALARM ON 8 7 ALARM ON 16
6 ALARM ON 7 6 ALARM ON 15
5 ALARM ON 6 5 ALARM ON 14
4 ALARM ON 5 4 ALARM ON 13
3 ALARM ON 4 3 ALARM ON 12
2 ALARM ON 3 2 ALARM ON 11
1 ALARM ON 2 1 ALARM ON 10
0 ALARM ON 1 0 ALARM ON 9
Third byte Fourth byte
Bit Bit
7 SENSOR 8 7 SENSOR 16
6 SENSOR 7 6 SENSOR 15
5 SENSOR 6 5 SENSOR 14
4 SENSOR 5 4 SENSOR 13
3 SENSOR 4 3 SENSOR 12
2 SENSOR 3 2 SENSOR 11
1 SENSOR 2 1 SENSOR 10
0 SENSOR 1 0 SENSOR 9
Fifth byte Sixth byte
Bit Bit
7 VIDEO LOSS 8 7 VIDEO LOSS 16
6 VIDEO LOSS 7 6 VIDEO LOSS 15
5 VIDEO LOSS 6 5 VIDEO LOSS 14
4 VIDEO LOSS 5 4 VIDEO LOSS 13
3 VIDEO LOSS 4 3 VIDEO LOSS 12
2 VIDEO LOSS 3 2 VIDEO LOSS 11
1 VIDEO LOSS 2 1 VIDEO LOSS 10
0 VIDEO LOSS 1 0 VIDEO LOSS 9
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
indication
00: No alarm
6 01: External
10: Video loss
11: Sensor alarm
5 Reserved 0
4 Reserved 0
3 Camera number
indication
0000: CAMERA NO. 1
2 0001: CAMERA NO. 2
1 0010: CAMERA NO. 3
0 0011: CAMERA NO. 4
0100: CAMERA NO. 5
0101: CAMERA NO. 6
0110: CAMERA NO. 7
0111: CAMERA NO. 8
1000: CAMERA NO. 9
1001: CAMERA NO. 10
1010: CAMERA NO. 11
1011: CAMERA NO. 12
1100: CAMERA NO. 13
1101: CAMERA NO. 14
1110: CAMERA NO. 15
1111: CAMERA NO. 16
D5
d1 d2 d3 d4 d5 d6
RXD
TXD
L8FC5/US (MPX-CD162, MD162 GB) 2000. 8. 31
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