Appendix f: alarm i/o pin definition – Speco Technologies 8TH User Manual
Page 162
User’s Manual
DVR-4TH/8TH/16TH Series
SPECO TECHNOLOGIES 07/10
161
Appendix F: Alarm I/O Pin Definition
The tables below list the pin definitions of alarm I/O located on the rear panel of the
DVR-4TH/ 8TH/ 16TH series unit.
DVR-4TH Alarm I/O
Pin Definition
Pin Definition
Pin Definition
1
RS485 D+
8
Normal Close B
15 Reserved
2
RS485 D-
9
Common Node B
16 Reserved
3
Ground
10 Normal Open B
17 Reserved
4
Normal Close A
11 Alarm In 1
18 Reserved
5
Common Node A
12 Alarm In 2
19 Reserved
6
Normal Open A
13 Alarm In 3
20 Reserved
7
Ground
14 Alarm In 4
DVR-8TH Alarm I/O
Pin Definition
Pin Definition
Pin Definition
1
RS485 D+
8
Normal Close B
15 Alarm In 5
2
RS485 D-
9
Common Node B
16 Alarm In 6
3
Ground
10 Normal Open B
17 Alarm In 7
4
Normal Close A
11 Alarm In 1
18 Alarm In 8
5
Common Node A
12 Alarm In 2
19 Reserved
6
Normal Open A
13 Alarm In 3
20 Reserved
7
Ground
14 Alarm In 4