Pco Edge 3.1, Руководство пользователя

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6. SHUTTER MODES
6.1 ROLLING SHUTTER
In rolling shutter 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. The pco.edge image sensor consists of
two discrete halves, which are exposed and read out simultaneously,
i.e. from the outside to the center by default. Within one line, the
exposure starts simultaneously for all pixels.
The exposure time of each row starts with reset of the corresponding
row. Then after a predefined time, the exposure is stopped. The light
induced accumulated charge carriers of the pixels in a line are shifted
into memory in a low noise (readout) mode. This results in the total
image appearing in memory corresponding to the line readout.
The diagram shows different signal timing settings (see
7.1 ).
General Timing Diagram
Camera (Rolling Shutter) Exposure time Delay time
pco.edge 3.1
USB 3.0
500 µs … 2 s
0 … 1 s
pco.edge 4.2 LT USB 3.0 100 µs … 10 s
pco.edge 4.2 USB 3.0 100 µs … 20 s
pco.edge 4.2 Camera Link 100 µs … 10 s
pco.edge 4.2 Camera Link HS 100 µs … 10 s
pco.edge 5.5 USB 3.0 500 µs … 2 s
pco.edge 5.5 Camera Link 500 µs … 2 s
pco.edge 5.5 Camera Link HS 500 µs … 2 s
NOTE:
For available Rolling
Shutter readout modes
see chapter 7.2.
NOTE
The exposure and
delay time can be
adjusted in steps of
one line time (see
1.2 ).