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AP-3200T-
PMCL
ExposureMode
The following exposure modes are available on the camera.
ExposureMode
Description
Off
Exposure control is not performed (free-running operation).
Timed
Mode in which control is performed using exposure time. Acquire images using
an exposure time configured beforehand on an external trigger.
TriggerWidth
Mode in which control of the exposure time is performed using the pulse width
of the trigger input signal. The exposure time will be the same as the pulse
width of the trigger input signal. This allows long exposure.
The settings for exposure control and triggers are related to each other. Be sure to configure the
settings described in “Trigger Control” .
When [ExposureTimeMode] is set to [Individual], you can set the exposure times for Red, Green, and
Blue individually. To set the exposure time individually for Red, set [ExposureTimeSelector] to [Red],
and configure the exposure time for Red in [ExposureTime]. Similarly, configure the exposure times
individually for Green and Blue.
Actual Exposure Times
The shortest exposure times that can be configured are as follows.
ExposureMode
Shortest exposure time
Timed
14.73 μs (8-bit)
TriggerWidth
14.73 μs (8-bit)
Trigger Control
The camera allows the following controls to be performed via external trigger signals.
TriggerSelector
Description
FrameStart
Start exposure in response to the external trigger signal input. Select this to
perform exposure control using external triggers.
1)
The settings for exposure control and triggers are related to each other. Be sure to configure the
settings described in “ExposureMode”.
1) You can delay when exposure actually starts after a trigger is received by a specific amount of time
by configuring [TriggerDelay].
The actual exposure time will consist of the image sensor’s offset duration (13.73 μs) added to the
setting configured on the camera.
When [ExposureMode] is set to [Timed] and the exposure time is set to 1 μs, the actual exposure
time will be as follows.
1 μs + 13.73 μs (offset duration of image sensor) = 14.73 μs
When [ExposureMode] is set to [TriggerWidth], the exposure is slightly longer than the width of the
trigger signal. To achieve an exposure time of 14.73 µs and the exposure time offset is 13.73 µs,
use 14.73 µs - 13.73 µs = 1 µs as the high or low time for the trigger signal.