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[NC]/[NO] (Relay Alarm Outputs): The recorder can activate external devices such as buzzers or lights.
Connect the device to the [C] (Common) and [NC] (Normally Closed) or [C] and [NO] (Normally Open)
terminals. [NC]/[NO] is a relay output which sinks 2A@125VAC and 1A@30VDC. See "Chapter 3 ─
Configuration" for configuring alarm output.
[ARI] (Alarm Reset In): An external signal to the Alarm Reset In can be used to reset both the Alarm Out
signal and the recorder's internal buzzer. Mechanical or electrical switches can be wired to the [ARI] (Alarm
Reset In) and [GND] (Ground) terminals. The threshold voltage is below 0.3 V and should be stable at least
0.5 seconds to be detected. Connect the wires to the [ARI] (Alarm Reset In) and [GND] (Ground) terminals.
Connector Pin Outs:
6 RS485 Terminal
The recorder can control PTZ (Pan/Tilt/Zoom) cameras using RS485 half-duplex serial
communications signals. Connect [RX+/TX+] and [RX–/TX–] of the control system to the [A] and [B]
(respectively) of the recorder. See "Chapter 3 ─ Configuration" and the PTZ cameras manual for
configuring the RS485 connection.
Connector Pin Outs:
7 RS232 Terminal
Connect the text-in device.
8 Factory Reset Switch
Important: When using the Factory Reset Switch, you will lose any settings you have saved.
(Excluded camera titles you can change in the Web Browser.)
To reset the unit, you will need a straightened paperclip:
1. Turn the recorder off.
2. Turn it on again.
3. While the recorder is initializing, the front panel indicators will blink. When the front panel indicators blink,
poke the straightened paperclip into the unlabeled hole to the right of the RS232 terminal.
4. Hold the reset switch until the recorder's internal buzzer sounds twice.
5. Release the reset switch. All of the recorder's settings are now at the original settings it had when it left the
factory.
AI (1 to 8)
Alarm Inputs 1 to 8
GND
Chassis Ground
NC
Relay Alarm Out (Normally Closed)
C
Relay Common
NO
Relay Alarm Out (Normally Open)
ARI
Alarm Reset In
Master Unit
A
g
B
g
The recorder has a Factory Reset Switch to the right of the RS232 terminal 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.
Slaver Unit
To
TX+/RX+
g
To
TX–/RX–
g
17
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