User’s Manual
6
AI 1 to 4 (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
for
NC
(Normally Closed) is above 4.3V and should be stable at least 0.5 seconds to be detected.
For
NO
(Normally Open), the threshold voltage is below 0.3V. See
Chapter 3 — Configuration
for
configuring alarm input.
GND (Ground)
Connect the ground side of the Alarm input to the
GND
connector.
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
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.
Alarm Out
Figure 10 — Alarm Output connector strips.
The DVR can activate external devices such as buzzers or lights. Mechanical or electrical switches
can be wired to the
NC
(Normally Closed) and
C
(Common) connectors or
NO
(Normally Open)
and
C
(Common) connectors. Permitted current is up to 0.5 A for 125 VAC, 1 A for 30 VDC. See
Chapter 3 — Configuration
for configuring alarm output.
Connecting to the Network Port
Figure 11 — Network connector.
The DVR can be networked using the 10/100Mb Ethernet connector. Connect a Cat5 cable with an
RJ-45 jack to the DVR connector. The DVR can be networked with a computer for remote
monitoring, searching, configuration and software upgrades. See
Chapter 3 — Configuration
for
configuring the Ethernet connections.
NOTE: This Network Port is not connected with cables or wires intended to connect to the
outdoor directly.
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