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5. Shutter setting
27
5.3.
Overlap
Configure this setting with TRG-OVLP. In trigger mode
or various modes that use an arbitrary shutter, horizontal
noise may occur on the screen if an electronic shutter
pulse SUB exists in the horizontal transferring period of
the CCD. If TRG-OVLP=1 is set, SUB is automatically
adjusted so that it occurs in the horizontal transferring
blanking period, thus enabling you to prevent the
inclusion of noise. In such a case, there is no change to
the exposure time even if there is a delay in the exposure
timing when in the trigger edge detection mode, but the
exposure time may increase slightly when in the trigger
width detection mode.
5.4.
WEN-STRB
Configure this setting with WEN-STRB. You can
change the output format of the 10th pin signal of the
DC IN connector (12-pin connector).
* When the parameter for the shutter speed setting is set
to the following values, the signal output of the 10th
pin is fixed at Hi. This also applies when in trigger
width detection mode.
SHUTTER = 0 (in all modes)
SHUTTER = 7 (in all modes)
SHUTTER = 1 (in binning mode)
40ms
70ms
When inclusion of
noise
The timing chart is when in
trigger width mode
The width of the external trigger is set to 40 ms, and the period to 70 ms. At that time, the SUB resulting
from the next trigger exists in the image transferring period resulting from the previous trigger. The existence
of SUB within the horizontal transferring period results in the inclusion of noise. If SUB exists in the
horizontal blanking period, no noise occurs.
Electronic shutter pulse SUB
Read pulse SG
Image transferring
External trigger
Image transferring period:
Approx. 65 ms
Start of exposure
End of exposure
Noise
WEN-STRB
10th pin signal output of DC IN connector (12-pin connector)
0
GND (ground)
1
DVAL signal
2
Exposure (Positive polarity: Hi output)
*