Timing Chart Of External Trigger Shutter - Mode 2 - Sony XC-ST50 Technical Manual

TIMING CHART OF EXTERNAL TRIGGER SHUTTER - MODE 2

For setting the shutter speed using TRG width
External trigger shutter operation
1
1
*
Trigger
2
*
Exposure time
Video out
1
4
*
1H to 2H
WEN
250H
(XC-ST50/30)
293H
(XC-ST50CE/30CE)
1: This is a signal input from external equipment. The trigger interval should be the trigger pulse width + 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, please wait several V before re-entering a trigger pulse.
2: Exposure time Te
*
(The trigger width should be between 2 µs and 1/4 s)
3: Normal operation 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: A VD signal is generated 1H to 2H after a trigger pulse falls, and an image is output in synchronization with
*
the VD signal.
5: When the external trigger shutter mode changes into the normal operation mode, a WEN signal is output.
*
Te
Te = Trigger width + 97 µs (XC-ST50/ST30),
Te = Trigger width + 120 µs (XC-ST50CE/ST30CE)
(RESET MODE)
3
*
Normal operation
1/3 s or more
5
*
250H
(XC-ST50/30)
293H
(XC-ST50CE/30CE)
XC-ST50/50CE
XC-ST30/30CE
Mode transition
External input
External trigger
inhibition area
shutter operation
(50 ms)
3
2
*
Exposure
time Te
3
4
*
1H to 2H
250H
(XC-ST50/30)
293H
(XC-ST50CE/30CE)
23