Installation
2.8.1 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.
2.8.2 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.
2.8.3 AO 1 and 4 (Alarm Out)
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 5 mA 12 V and 30 mA 5V. See Chapter 3 —
Configuration for configuring alarm output.
2.8.4 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
4.3 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) connectors.
16
Siemens Building Technologies SISTORE AX9 AX16_EN.doc
Fire & Security Products 09.2004
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