Honeywell HRXDS16, User Manual

Page: 31 / 172

Document 800-04559 Rev D 31
11/09
Installation
AI 1 to 16 (Alarm-In)
You can use external devices to signal the DVR to react to events. Mechanical switches
can be used to open/close the circuit between Alarm In and GND to trigger an event.
You can also use electrical switches to apply electric voltage to Alarm In (0V and 5V) to
trigger an alarm with common ground: 2.4~5 VDC for 0.5 seconds is required to trigger
an alarm on NC (Normally Closed) Alarm In. For NO (Normally Open) Alarm In, below
0.3 VDC for at least 0.5 seconds is required to trigger an alarm. 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 2 to 16 (Alarm-Out)
Figure 2-10 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 30mA@12VDC. See
Chapter 3, Configuration for configuring alarm
output.
NC/NO (Relay Alarm Output)
Figure 2-11 Relay Alarm Output Connectors
N C C O M N O
N C C O M N O