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Installation
ARI (Alarm Reset In)
An external signal to the Alarm Reset In (ARI) can be used to reset both the Alarm
Out signal and the DVR internal buzzer. Mechanical or electrical switches can be wired
to the ARI (Alarm Reset In) and GND (Ground) connectors. The threshold voltage is
below 0.3V and should be stable at least 0.5 seconds to be detected. Connect the
wires to the ARI (Alarm Reset In) and GND (Ground) connectors.
Connecting to the RS485
You can control the DVR 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 TX-/RX- and TX+/RX+
(respectively) of the DVR. See
controller manufacturer's manual for configuring the RS485 connection.
Rev 1.00
Figure 2-9
Alarm Reset Input Connector Strips
Figure 2-10
RS485 Connector
Chapter 3, Configuration
11
and the PTZ camera or remote
Document 900.0258
09/04
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