Manual

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Firmware User’s Manual V6.09.45
93
Digital I/O ports
Digital input/output ports (select models only) are used to connect digital input (DI) and digital
output (DO) devices. DI is a trigger device like a switch or sensor (e.g. “panic button”), which
when pressed or triggered, notifies the camera to perform specific actions or the DO device to
respond. DO’s can be alarms or lights, etc.
The Digital I/O Ports page displays the number of available DI and DO ports on the camera,
which varies depending on camera model.
DI: To configure the digital input device, define the active level and trigger interval of the DI. The
default Active Level is “0”, which means the DI device remains inactive unless triggered. A good
example is a “panic button”, which always stays in inactive mode “0” until the button is pressed;
when the button is pressed, its active level becomes “1” which means the DI is triggered. Active
level “1” returns back to “0” (inactive mode) after the specified Interval. The Interval is the
duration of time when the trigger remains in active mode which is also the minimum time interval
between the previous trigger and the next. For example, if the interval is set to “5 seconds”, the DI
will not respond if the “panic button” is pressed within 3 seconds after the previous trigger. To
issue another trigger, press the button after 5 seconds from the previous trigger.
DO: To configure the digital output device, define the active level and response interval. The
default Active Level is “1”, which means the DO will turn to active mode and respond once
triggered. The duration of its response will last according to the set Interval. A good example is
an alarm siren, wherein the siren will start sounding only when it is triggered by an event or
another device like a DI. The siren will stop sounding once the set interval time elapsed.
After changing any of the items above, press Apply to save the changes. The Reset button
undoes the changes that had just been made but not yet applied or saved.