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The requirements of the alarm
signal level are as follows:
Low level: 0 V to 0.8 V
High level: more than 3.3 V
(max. 12 V)
Pulse width: 2 s or more
3 s or less
q Relay output: max. 30 VDC,
1 A or 125 VAC, 0.3 A
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
1
20
■ RS485 Connection
A 25-pin connector is used to accept and supply control signals.
TERMINAL/CONTROL
Internal block diagram
13
25
1
14
RA
TA
RB
TB
Pin No. Signal Operation Remarks
TA
TB
RA
RB
Terminal input 1
Terminal input 2
Terminal input 3
Terminal input 4
Terminal input 5
Terminal input 6
Terminal input 7
Terminal input 8
+12 V
Grounding
Alarm Output 1 (N.O.)
Alarm Output 1 (N.C.)
Alarm Output 1 (Common)
Alarm Output 2 (N.O.)
Alarm Output 2 (N.C.)
Alarm Output 2 (Common)
Alarm Output 3 (N.O.)
Alarm Output 3 (N.C.)
Alarm Output 3 (Common)
Grounding
Grounding
Sends the alarm signal to external
alarm unit 2.
Sends the alarm signal to external
alarm unit 3.
+12 V voltage output
Sends the alarm signal to external
alarm unit 1.
RS485 camera sending + data
RS485 camera sending – data
RS485 camera receiving + data
RS485 camera receiving – data
When an alarm occurs in channels 1
– 8, the alarm signals are sent to the
recorder through these ports.