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GND (Ground): Connect the ground side of the Alarm input and/or alarm output to the GND
connector.
NOTE: All the connectors marked GND are common.
NO (Normally Open): Connect the device to the COM and NO (Normally Open) connector.
NO is a relay output which sinks 1A@30VDC.
Connector Pin Outs:
RS485 Port
The DVR can be controlled remotely by an external device or control system, such as
a control keyboard, using RS485 half-duplex serial communications signals. The RS485
connector can also be used to control PTZ (pan, tilt, zoom) cameras or text-in devices.
Connect RX+/TX+ and RX-/ TX- of the control system to the + and – (respectively)
of the DVR. See Chapter 3 ─ Configuration and the PTZ camera, text-in device or
remote controller manufacture's manual for configuring the RS485 connection.
Connector Pin Outs:
RS232 Port
An RS232 port is provided to connect remote control devices such as a control keyboard.
PTZ cameras or text-in devices can also be connected to the RS232 port. See Chapter 3
─ Configuration and the PTZ camera, text-in device or remote controller manufacturer's
manual for configuring the RS232 connection.
Connector Pin Outs:
NOTE: Refer to the following 9-pin connector pin out of the slave unit.
Female
Male
Power Cord Connector
Connect the connector of the adaptor to the DVR, and connect the AC power cord to
the adaptor and then to the wall outlet.
Alarm In (1 to 8)
GND
COM
NO
Master Unit
+
→
To
–
→
To
GND
→
To
Master Unit
RX
→
To
TX
→
To
GND
→
To
Pin 2
RXD (Receive Data)
Pin 3
XD (Tr nsmit Data)
P n 5
GND (Ground)
4- & 8-Channel Digital Video Recorder
Alarm Inputs 1 to 8
Chassis Ground
Common
Alarm Out (Normally Open)
Slave Unit
→ TX+/RX+
→ TX-/RX-
→
GND
Slave Unit
→
TXD
→
RXD
→
GND
5
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