Digital Video Recorder
5
Connector Pin Outs:
AI (1 to 16)
Alarm Inputs 1 to 16
GND
Chassis Ground
NC
Relay Alarm Out (Normally Closed)
C
Relay
Common
NO
Relay Alarm Out (Normally Open)
ARI
Alarm Reset In
RS485 Port
Connector Pin Outs:
Master Unit
Slave Unit
P+
→
To
→
TX+/RX+
N–
→
To
→
TX–/RX–
RS232 Port
Connector Pin Outs:
Master Unit
Slave Unit
RX
→
To
→
TXD
TX
→
To
→
RXD
GND
→
To
→
GND
NOTE: Refer to the following for pin-out details for the 9-pin connector of the slave unit.
Male
Female
Pin 2
RXD (Receive Data)
Pin 3
TXD (Transmit Data)
Pin 5
GND (Ground)
Factory Reset Switch
The DVR has a
Factory Reset
switch to the left of the HDMI 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.
To reset the unit, you will need a straightened paperclip:
1. Turn the DVR off.
2. Turn it on again.
3. While the DVR is initializing, the front panel LEDs will blink. When the front panel LEDs blink, poke the
straightened paperclip into the unlabeled hole to the left of the HDMI connector.
4. Hold the reset switch until the DVR’s internal buzzer sounds twice.
5. Release the reset switch. All of the DVR’s settings are now at the original settings it had when it left the factory.
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. 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 or remote controller
manufacture’s manual for configuring the RS485 connection.
An RS232 port is provided to connect a remote control keyboard.
