Cheetah Pregius Camera with 10 GigE Vision Interface – User Manual
October 8, 2020
Page
113
of
170
Rev 1.0
Exposure Control in Trigger Mode
In
trigger mode
, you can synchronize the camera’s acquisition cycle to an external signal by
setting the exposure control to either Timed or Trigger Width. Trigger mode can be set to either
Standard or Fast (see
).
The electronic exposure control does not affect the camera’s frame rate in
Fast trigger mode, because the exposure and readout operations are
overlapped in time. In Standard Trigger mode, the maximum frame rate
depends upon the exposure time, because the exposure and readout occur
sequentially (not overlapped).
In
Timed
exposure control mode, you can set the external trigger pulse to control the start of
exposure.
1.
Turn off the camera image acquisition.
2.
Set
ExposureAuto
to
Off
for manual exposure control, or to either
Once
or
Continuous
for
automatic exposure control.
3.
In the Acquisition Control menu:
•
Set
TriggerMode
to
On
.
•
Set
ExposureMode
to
Timed
.
•
If
ExposureAuto
is
Off
, then set
ExposureTime
(in µs) to a user-specified value.
While the
ExposureTime
allows for 1-µs increments, the
CurrentExposureTime
increment equals 1-line time in µs.
4.
Configure the trigger parameters.
Please refer to the section
, steps 3–6
.
In
Trigger Width
mode, you can set the external trigger signal to control the start and duration of
exposure. This mode is available in both Standard and Fast trigger modes (refer to the section
To configure the camera to work in
Trigger Width
Exposure mode:
1.
Turn off the camera image acquisition.
2.
Make sure that
ExposureAuto
is
Off
and
AcquisitionFrameRateEnable
is False.
3.
In the Acquisition Control menu:
•
Set
TriggerMode
to
On
.
•
Set
ExposureMode
to
TriggerWidth
.
4.
Configure the trigger pulse parameters.
Please refer to the section
, steps 3–6
.
