Appendix F: Alarm I/O Pin Definition - Speco DVR-4TH User Manual

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
1 RS485 D+
2 RS485 D-
3 Ground
Normal Close A
4
Common Node A
5
6 Normal Open A
7 Ground
DVR-8TH Alarm I/O
Pin Definition
RS485 D+
1
RS485 D-
2
Ground
3
4 Normal Close A
5 Common Node A
6 Normal Open A
Ground
7
DVR-4TH/8TH/16TH Series
SPECO TECHNOLOGIES 01/09
Pin Definition
8 Normal Close B
9 Common Node B
10 Normal Open B
Alarm In 1
11
Alarm In 2
12
13 Alarm In 3
14 Alarm In 4
Pin Definition
Normal Close B
8
Common Node B
9
Normal Open B
10
11 Alarm In 1
12 Alarm In 2
13 Alarm In 3
Alarm In 4
14
User's Manual
Pin Definition
15 Reserved
16 Reserved
17 Reserved
Reserved
18
Reserved
19
20 Reserved
Pin Definition
Alarm In 5
15
Alarm In 6
16
Alarm In 7
17
18 Alarm In 8
19 Reserved
20 Reserved
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