Olympus i-SPEED 2, Instructions Manual

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Nomenclature & Functions
12
i
--SPEED LT,
i
--SPEED 2
Feature connector cable
Trigger Input / Trigger Switch : This connector (and the
supplied trigger switch if required) are used to trigger the camera
while recording is in progress. Further details are provided in
Chapter 8 “Understanding the Olympus i--SPEED 2 ” .
When the trigger is set to 0%, the trigger counter is set to the
length of the memory, so that the trigger point appears at the
beginning (0%) of the final video clip. A setting of 100% will
cause the recording to stop immediately, placing the trigger
event at the end of the video clip.
The signal is TTL level and the user may select rising edge or
falling edge trigger options.
The trigger input contains a “pull--up” resistor to enable the
supplied trigger switch to be used without further electronics. It
should be noted that the trigger switch provides a falling edge.
In practice, the trigger switch also produces a rising edge
because of switch bounce, but this cannot be guaranteed.