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 4 (Alarm Out)

Figure 9 — Alarm Output connector strips.

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)

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 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. Connect the wires to the ARI (Alarm Reset In) and GND (Ground)

connectors.