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16-Channel Digital Video Recorder
5
RS485 Port
Connector Pin Outs:
Master Unit Slave Unit
P → To → TX+/RX+
N → To → TX-/RX-
GND → To → GND
Alarm Input/Output
AI 1 to 16 (Alarm-In): You can use external devices to signal the DVR to react to events. Mechanical or electrical
switches can be wired to the AI (Alarm-In) and GND (Ground) connectors. The threshold voltage of electrical switches
for NC (Normally Closed) is above 2.4V and for NO (Normally Open) is below 0.3V, and should be stable at least 0.5
seconds to be detected. The voltage range of alarm input is from 0V to 5V. See Chapter 3 ─ Configuration for
configuring alarm input.
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 (NO). See Chapter 3 ─ Configuration for configuring alarm output.
Connector Pin Outs:
Alarm In
(
1 to 16
)
Alarm In
p
uts 1 to 16
GND
Chassis Groun
d
COM
Commo
n
NO
Alarm Out
(
Normall
y
O
p
en
)
Network Port
CAUTION: The network connector is not designed to be connected directly with cable or wire
intended for outdoor use.
Factory Reset Switch
The DVR has a Factory Reset switch to the right of the VGA connector on the rear panel.
This switch will only be used on the rare occasions that you want to return all the settings to
the original factory settings.
CAUTION: When using the Factory Reset, you will lose any settings you have saved.
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 P (+) and N (–) (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.
NOTE: To make connections on the Alarm Connector Strip, press and hold the
button and insert the wire in the hole below the button. After releasing the
button, tug gently on the wire to make certain it is connected. To disconnect
a wire, press and hold the button above the wire and pull out the wire.
The DVR can be networked using the 10/100Mb Ethernet connector. Connect a Cat5 cable with an RJ-45
jack to the DVR connector. The DVR can be networked with a computer for remote monitoring, searching,
configuration and software upgrades. See Chapter 3 ─ Configuration for configuring the Ethernet
connections.