Alarm Port Connection
The ALARM port can be used for connecting the alarm sen-
sor and alarm control switches. It is also used to synchro-
nize the sequence as shown below.
• Connect the sensor switches to the ALARM port on the
rear of the Disk Recorder, as shown in the example
below.
13
25
Pin
Designation
No.
1
Alarm Input 1
2
Alarm Input 2
3
Alarm Input 3
4
Alarm Input 4
5
Sequence Timing Input
6
Alarm Reset Output
7
Ground
8
Alarm Recover Input
9
Alarm Output
10
Alarm Input 10
11
Alarm Input 11
12
Alarm Input 12
13
Alarm Input 13
18
1
14
ALARM
Pin
Designation
No.
14
Ground
15
Alarm Input 5
16
Alarm Input 6
17
Alarm Input 7
18
Alarm Input 8
19
Alarm Input 9
20
Ground
21
+5 V Output (0.2 A)
Recording Timer Select
22
Input
23
Alarm Input 14
24
Alarm Input 15
25
Alarm Input 16
• The sequence timing can be assigned to one of the
recorders when the multiple Disk Recorders are
equipped in the system.
Connect the CONTROL port and ALARM port as shown
below.
Refer to the SEQ TIMING in the SEQUENCE SETUP
menu for further setting.
Sequence Timing Output
Ground
4
15
CONTROL
WJ-HD500A (1st)
If the sequence timing is controlled from the outboard
device, the input signal is required as shown in the fig-
ure. For example, the WJ-HD500A output is also in the
figure.
input
100 ms 100 ms
WJ-HD500A
output
Sequence Timing Input
Ground
5
7
ALARM
WJ-HD500A (2nd)
500 ms
100 ms