Pco Edge 3.1 User Manual

17
6 CAMWARE 4 SOFTWARE
6.3.1 TIMING
Introduction to timing
An important parameter for a camera is the frame rate. The
upper limit of the
frame rate is defined by exposure and
readout time.
The figure below shows the timing scheme. Exposure and
readout are done
simultaneously, this means while image n is
readout from the sensor, image n+1
is already integrated within
the sensor’s pixel elements.
Figure shows, that in case of short exposure times, the
readout is the
limiting factor. The second figure shows
that for long exposure times the exposure
time plus delay
(t
delay
) is the limiting factor.
Figure : Image timing for short exposure times
Figure : Image timing for long exposure times
If a lower frame rate is desired, this can be achieved by inserting
additional delay times. These rules also apply in external trigger
mode, i.e. this
defines when the next trigger can be applied or
recognized.
For further timing explanations (e.g. fps based timing) please read
the following chapters for Rolling Shutter, Global Shutter and
Global Reset.
n + 1
n + 2
n + 1
n + 2
t
exp
t
readout
n - 1
n + 1
n + 1
t
exp
t
del
readout
readout
exposure
exposure
1
2
1
2

Pco Edge 3.1 Specifications

General

Brand	Pco
Model	Edge 3.1
Category	Digital Camera
Language	English