Ai 1 To 16 (Alarm-In); Gnd (Ground); Ao 1 To 16 (Alarm-Out); Ari (Alarm Reset In) - PACOM PDR-9LX User Manual

User's Manual
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.

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 is 4.3V and should be stable at least 0.5 seconds to be detected. See Chapter 3 —
Configuration for configuring alarm input.

GND (Ground)

NOTE: All the connectors marked GND are common.
Connect the ground side of the Alarm input and/or alarm output to the GND connector.

AO 1 to 16 (Alarm-Out)

Figure 9 — Alarm Output connectors.
The DVR can activate external devices such as buzzers or lights. Connect the device to the AO
(Alarm-Out) and GND (Ground) connectors. AO is an active low open collector output which
sinks 5mA@12V and 30 mA@5V. See Chapter 3 — Configuration for configuring alarm
output.

ARI (Alarm Reset In)

Figure 10 — Alarm Reset Input connectors.
An external signal to the Alarm Reset In can be used to reset both the Alarm Out signal and the
DVR's 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.
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