17
Mode Setting
3
3
2
2
1
1
Timing Chart
When set to Mode 1 (M1)
For setting the shutter speed using trigger pulse width
◆ HD/VD input
• Continuous VD input
*1 This is a signal input from outside. Make sure to
input both HD and VD signals.
*2 Exposure time (Te)
Te = Trigger pulse width + 31
µ
sec
(The effective trigger pulse width for the external
trigger shutter operation is between 2
µ
s and 1/4 s.)
*3 The normal operation state is carried out when the
trigger pulse width is 1/3 s or more. The trigger
falling edge restores the external trigger shutter
operation. In this case, the area between the falling
edge of a trigger pulse and the subsequent 50 ms
period is an external trigger input inhibition area.
There is no guarantee of operation for any trigger
input selected in this period.
*4 If there is a falling edge on the external VD within
a period of +10
µ
s from the falling trigger edge (1
and 2 in the figure), it is not defined whether the
image is output for the external VD falling edge or
the image is output for the next external VD falling
edge. (1 in the figure shows that the image is
output for the next external VD. 2 shows the
image for the external VD.) In this case, see WEN
since output of the image and WEN make up a
pair. In any other cases, the image is output for the
external VD falling edge after the trigger falling
edge (3 in the figure).
*5 Video out 2 is output only in the 2I mode.
Note
An image is not output correctly when the next trigger is
input before the image for the previous trigger is output.
External trigger shutter operation
Normal operation*
3
Mode transition state
External input
inhibition area
(50 ms)
External trigger
shutter operation
Exposure time (Te)*
2
Exposure
time (Te)*
2
Exposure time (Te)*
2
Trigger pulse width*
3
T: T=under 10
µ
s*
4
T: T=under 10
µ
s*
4
10
µ
s or more
312.5 H (2I mode)
625 H (1N mode)
32
µ
s
10
µ
s
Trigger*
1
External HD*
1
External VD*
1
(Continuous
VD)
EXT-VD
Video out 1*
5
Video out 2
WEN
TRG
EXT-VD
EXT-VD
