ACTi I51 User Manual download pdf (Page 90)

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Firmware User’s Manual V6.08.30

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.

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ACTi I51 User Manual Page 90