14
Functions of the XCL-X700
XCL-X700/V500
This camera is equipped with an Overlap function
which eliminates the effect of noise accompanying the
increase of frame rate while using a slow to mid-speed
shutter. This camera module can be used in the
operation mode that can increase frame rate without
noise generation as indicated in
2
as well as that in
1
that is equal to the operation of previous analog
cameras. Thanks to this function, exposure time can be
prolonged, and shutter speed can be slowed down,
keeping a high frame rate by putting the rising edge of
the external trigger earlier as indicated by A in
2
. Be
aware that the maximum interval in which you can
input the rising edge of the external trigger is in the
range of 10 H after the falling edge of the previous
trigger to the rising edge of the next trigger as
indicated by B in
2
. Trigger Mode1 and 2 are
supported for the Camera Mode.
This camera module
1
Internal-VD
External
trigger
Video out
Exposure
time
T1 = approx. Effective image in Exposure time
Effective image interval
Internal-VD
External trigger
Video out
This camera module
2
T2 = approx. Effective image interval
No noise generated
B
A
10H
Exposure
time
Notes
• The description above is the operation while using a
slow to mid-speed shutter controlled by the external
trigger pulse width. When using a fixed speed
external trigger shutter, be sure to input the rising
edge of the next trigger after the internal exposure
time and at the appropriate timing so as not to affect
the effective image interval corresponding to the
current trigger signal. Be aware that if this condition
is not observed, the following may occur.
-
To which frames the effective images
corresponding to the external trigger signals will
be output may be inconsistent.
-
Double exposure
-
Signals in the blanking interval may be output in
the effective image interval.
• If you change settings such as Camera Mode while
using the Overlap function, video output may be
disturbed.
• A deviation of a maximum about 1H is generated for
the exposure time by the Overlap function, so the
supported shutter speeds are limited to those for
which this exposure deviation can be ignored.