Trigger Input - American Dynamics Hybrid Digital Video Recorder User Manual

Trigger Input

HDVR has 16/32 TTL trigger inputs that are configured through the Trigger Input Setup screen as either
normally opened or normally closed. The Trigger Inputs terminal block plug on the back of the HDVR
unit can be easily removed to connect the wires from the source sensor device (in this example a door
sensor). There are small screws on the top of the connector that need to be partially unscrewed in order
to insert the wire into the individual connections. Once the wires are inserted into the connector, tighten
each screw for a secure connection and then re-insert the connector in the back of the unit.
1. Connect the one source output sensor wire to any of the 16/32 trigger inputs.
2. Connect the second source output sensor wire to one of the ground connectors.
You can verify the proper operation of the input state by going to the Trigger Input setup screen and
observing the "Status" state, which toggles back and forth between "Normal" and "Alarmed". By default
the "Normal State" is set to NC (Normally Closed). If you trip the sensor by opening the door you will
see the "Status" state toggle from a green 'Normal" to a red "Alarmed" indicating an alarm has been
detected. The alarm can be linked to an action such as recording video or triggering a relay by going to
the Event Linking screen and configuring the desired action (see
24
Event Linking).
Hybrid Digital Video Recorder