18
6.3.2 ROLLING SHUTTER
The pco.panda uses the rolling shutter mode. In this mode the pixel
reset and exposure start is carried out line by line. Each line has the
same exposure time, but a different start and end of exposure. Within
one line, the exposure starts simultaneously for all pixels.
The exposure time of each line starts with the corresponding reset of
the line. Then after a predefined time (exposure time), the exposure is
stopped. The light induced accumulated charge carriers of the pixels
in a line are recorded into memory in a low noise (readout) mode. This
way the content of the pixels is assembled in the memory to form the
complete image.
The diagram shows different signal timing settings (see chapter
6.3.7). During Show common time of ‘All Lines’ the image sensor is
completely exposed to light. The labels Show time of ‘First Line’
and ‘Last Line’ are the setting for the first / last exposed line and
Show overall time of ‘All Lines’ for the entire exposure period.
There are two different timing cases for rolling shutter mode, which
are explained on the following pages:
• exposure time > sensor readout time
• exposure time < sensor readout time
Rolling Shutter General Timing Diagram
Timing
USB 3.1
10 µs … 5 s 0 … 5 s 12.136 µs
The
exposure and
delay time can be
adjusted in steps of
one line time.
To Next Page
Loading...
Need help?
General
