Baumer VEXG - Exposure Time

40
8.1.3 Exposure Time
On exposure of the sensor, the inclination of photons produces a charge separation on
the semiconductors of the pixels. This results in a voltage difference, which is used for
signal extraction.
The signal strength is inuenced by the incoming amount of photons. It can be increased
by increasing the exposure time (t
exposure
).
Notice
Due to the sensor, xed pattern noise effects can occur at high exposure times. You
can counteract this by setting the gain to a value of approximately 1.5 and reducing the
exposure time accordingly.
On Baumer VEX cameras, the exposure time can be set within the following ranges (step
size 1μsec):
8.1.3.1 VEXG
Camera Type t
exposure
min t
exposure
max
Monochrome
VEXG-02M 40 μsec 1 sec
VEXG-13M 40 μsec 1 sec
VEXG-25M 40 μsec 1 sec
VEXG-52M.R 20 μsec 1 sec
VEXG-100M.R 48 μsec 1 sec
Color
VEXG-02C 40 μsec 1 sec
VEXG-13C 40 μsec 1 sec
VEXG-25C 40 μsec 1 sec
VEXG-52C.R 20 μsec 1 sec
VEXG-100C.R 48 μsec 1 sec
8.1.3.2 VEXU
Camera Type t
exposure
min t
exposure
max
Monochrome
VEXU-24M 57 μsec 60 sec
Color
VEXU-24C 57 μsec 60 sec
Figure16►
Incidence of light
causes charge separa-
tion on the semiconduc-
tors of the sensor.
Notice
Only for cameras
with rolling shutter
sensors!
The modication of
the Exposure Time is
done by recongura-
tion of the sensor.
If the modication oc-
curs during a sensor
readout, the update
will be delayed until
the end of the current
readout.