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13
Mode Setting
3
3
2
2
1
1
Timing Charts
When set to Mode 1
For setting the shutter speed using the 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 + 97
µ
sec (EIA)
Te = Trigger pulse width + 120
µ
sec (CCIR)
(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 chosen 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 –65 to +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 When the external trigger shutter mode changes to
the normal operation mode, one WEN signal is
output.
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
250 H (EIA)
293 H (CCIR)
65
µ
s
10
µ
s
Trigger*
1
External HD*
1
External VD*
1
(Continuous
VD)
EXT-VD
Video out
WEN
TRG
EXT-VD
EXT-VD
*
5