User manual

Appendix 2 DVQ-2, DMR 4 RT Pin Conﬁ guration

EXTERNAL DEVICES

Connecting External Alarms devices - example using a Siren: Use pins 7,

8 inputs and 15 COM when connecting external alarms like sirens, or horns.

NO (Normally Open):

Under standby mode the DVR COM pin 8 is disconnected with the normally

open (NO) device. When a DVR is triggered by an alarm trigger or motion

detection, the COM (on the DVR) connects with (NO) normally open device

and siren (external device) will start sounding and ﬂ ashing.

NC (Normally Closed):

Under standby mode the DVR COM pin 7 is connected with the normally

closed (NC) device. When a DVR is triggered by an alarm trigger or motion detection, the COM (on the DVR) disconnects

with (NC) normally closed device and siren (external device) will start sounding and ﬂ ashing.

INPUT ALARMS

Connecting Input Alarm devices - example using a Magnetic Contacts: Use pins 3, 6 inputs and 9 Signal Ground

when connecting Input Alarms like magnetic contacts.

Alarm is set for LOW):

Under standby mode the DVR pin 3 to 6 are 5v TTL high, when external input device (Magnetic Contacts) input is

activated or is low or grounded (zero), this will zero pins 3 ~ 6 and the DVR will start recording and buzzer will sound.

Alarm is set for HIGH):

Under standby mode the DVR pin 3 to 6 are 0v TTL low, when external input device (Magnetic Contacts) input is activated

or is high (5v TTL), this will raise the voltage to 5V TTL to pins 3 ~ 6 and the DVR will start recording and buzzer will

sound.

PIN DESCRIPTION

PIN NUMBERS:

1 RS232-TX DVR pin is used to serially communicate with remote PC using the RS-232 PROTOCOL. Use

SERIAL PROTOCOL table for command set.

2 RS232-RX DVR pin is used to serially communicate with remote PC using the RS-232 PROTOCOL. Use

SERIAL PROTOCOL table for command set.

3 ~ 6 ALARM INPUT

Use ALARM INPUT ( PINS 3 -- 6 ) and GND ( PIN 9 ) to activate the DVR to start recording and trigger internal

buzzer sound.

7 EXTERNAL ALARM NC Under the normal operation, COM connects with NC and disconnects from NO. But when any

alarm is triggered, COM disconnects with NC and connects with NO.

NOTE: MAXIMUM voltage allowable is 24DCV 1A.

8 EXTERNAL ALARM NO. Under the normal operation, COM disconnects with NO. But when any alarm is triggered,

COM connects with NO.

NOTE: MAXIMUM voltage allowable is 24DCV 1A.