User manual
75H.264 Network DVR User Manual
APPENDIX A: D-SUB CONNECTOR PIN CONFIGURATION
APPENDIX A
D-sub Connector Pin Conguration
A.1 DMR42DVD 25-pin D-sub connector conguration
Siren: When the DVR is triggered
by alarm or motion, the COM
connects with NO and the siren
with strobe starts wailing and
ashing.
Magnetic Contact: When the
magnetic contact is opened, the
alarm will be triggered and the
recording is on.
Table 10. 25-pin D-sub conguration for DMR42DVD
Pin Function Description
1 GND GROUND
2~9 ALARM INPUT Connect ALARM INPUT (pin 2 -- 9) and GND (pin 1) connector with wires. When an alarm is
triggered, the DVR will start recording and the buzzer will be on.
Pin 2 is Alarm 1. When the alarm is triggered, CH1 will start alarm-triggered recording.
Pin 3 is Alarm 3. When the alarm is triggered, DVR CH3 will start alarm-triggered recording.
Pin 4 is Alarm 5. When the alarm is triggered, DVR CH5 will start alarm-triggered recording.
Pin 5 is Alarm 7. When the alarm is triggered, DVR CH7 will start alarm-triggered recording.
Pin 6 is Alarm 9. When the alarm is triggered, DVR CH9 will start alarm-triggered recording.
Pin 7 is Alarm 11. When the alarm is triggered, DVR CH11 will start alarm-triggered recording.
Pin 8 is Alarm 13. When the alarm is triggered, DVR CH13 will start alarm-triggered recording.
Pin 9 is Alarm 15. When the alarm is triggered, DVR CH15 will start alarm-triggered recording.
10~12 PIN OFF NA
13 EXTERNAL
ALARM NO
During normal operation, COM disconnects with NO. But when any alarm is triggered, COM
connects with NO. Attention: Voltage and current must be < 24 V DC @ 1A.
14 PIN OFF NA
15~22 ALARM INPUT Connect ALARM INPUT (pin 15 – 22) and GND (pin 1) connector with wires. When an alarm is
triggered, the DVR will start recording and the buzzer will be on.
Pin 15 is Alarm 2. When the alarm is triggered, DVR CH2 will start alarm-triggered recording.
Pin 16 is Alarm 4. When the alarm is triggered, DVR CH4 will start alarm-triggered recording.
Pin 17 is Alarm 6. When the alarm is triggered, DVR CH6 will start alarm-triggered recording.
Pin 18 is Alarm 8. When the alarm is triggered, DVR CH8 will start alarm-triggered recording.
Pin 19 is Alarm 10. When the alarm is triggered, DVR CH10 will start alarm-triggered recording.
Pin 20 is Alarm 12. When the alarm is triggered, DVR CH12 will start alarm-triggered recording.
Pin 21 is Alarm 14. When the alarm is triggered, DVR CH14 will start alarm-triggered recording.
Pin 22 is Alarm 16. When the alarm is triggered, DVR CH16 will start alarm-triggered recording.
23~24 PIN OFF NA
25 EXTERNAL
ALARM COM
During normal operation, COM disconnects with NO. But when any alarm is triggered, COM con-
nects with NO. Attention: Voltage and current must be < 24 V DC @ 1A.