Cheetah Pregius Camera with 10 GigE Vision Interface – User Manual
October 8, 2020
Page
112
of
170
Rev 1.0
To reduce the image exposure time under bright lighting conditions, set the exposure control
mode to
Timed
. The electronic exposure control does not affect the frame rate; it only changes
the exposure time. When the Timed mode is active, the camera controls the start of exposure, so
the new exposure ends just as the readout of the current frame ends and the readout of the next
frame begins.
Exposure time
Exposure N
Exposure N+1
Readout N-1
Readout N
Readout time
Exposure time
Readout time
Settings:
Exposure Mode:
Timed
Trigger Mode:
Off
Exposure Time:
User-specified
(Min.= 36
µ
s; Max = Readout time)
Start of
Exposure
Free-running mode, Exposure control is Timed
To configure the camera to work in free-running mode with Timed expose control:
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
Off
.
•
Set
ExposureMode
to
Timed
.
•
If
ExposureAuto
is
Off
, then set
ExposureTime
(in microseconds) to a user-specified value.
In free-running mode, the maximum exposure time equals frame
time. You can extend the exposure time by increasing the frame
time:
1.
Check
AcquisitionFrameRateEnable
box.
2.
Increase the frame time by using
AcquisitionFrameTime
(in
µs) or
AcquisitionFrameRate
(in Hz) settings.
3.
Set
ExposureTime
within the extended frame time range.
In free-running mode, the minimum exposure is 36 µs.
While the
ExposureTime
allows for 1-µs increments, the
CurrentExposureTime
increment equals 1-line time in µs.
