Sony XCST70 Manuel de l'utilisateur - Page 26
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XC-ST70/70CE
TIMING CHART OF EXTERNAL TRIGGER SHUTTER - MODE 2 (RESET MODE)
For setting the shutter speed using DIP switch
External trigger shutter operation
1
1
*
Trigger
2
*
Exposure time
Video out
1
4
*
T
WEN
250H (XC-ST70)
293H (XC-ST70CE)
1: This is a signal input from the outside. The trigger interval should be shutter speed (DIP switch) + 1 field
*
+ 2H period or more. The trigger interval shorter than described above cannot be ensured. If a trigger
pulse is not input under the prescribed conditions, the normal operation is engaged several V after a
change in input operation under the prescribed conditions.
2: As shown in the table on page 7, exposure time Te is determined by the setting of a DIP switch.
*
3: The normal operation state is engaged when the high period exceeds 1/3 sec. After that, the external
*
trigger shutter operation is engaged when the trigger pulse goes "low". In this case, the area between the
falling edge of a trigger pulse and the subsequent 50 ms period is an external input inhibition area. During
the trigger inhibit period, an input trigger may be missed.
4: After a period set by a DIP switch from the rising edge of the trigger, an image is output.
*
24
Te
1/3 s
Mode transition state
External input
inhibition area
3
*
Normal operation
External trigger
shutter operation
(50 ms)
2
2
*
Exposure
time
Te
2
4
*
T
250H (XC-ST70)
293H (XC-ST70CE)