Sony XCST70 Gebruikershandleiding - Pagina 10

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Sony XCST70 Gebruikershandleiding
XC-ST70/70CE
ELECTRONIC SHUTTER

External trigger shutter

These modes are used to capture one image (one field) per trigger pulse.
Set DIP switches 6, 7, and 8 on the rear panel to mode 1 or 2. (Refer to the table below.)
When the trigger pulse width is 1/3 sec or more, the output signal is switched to a normal video signal.
There are two modes for timing in which a video signal is obtained.
Mode 1 (Non-reset mode)
In this mode, a video signal synchronized with a VD signal is output after a trigger pulse is input.
•
A video signal is synchronized with the external VD signal when an external HD/VD signal is input.
•
A video signal is synchronized with an internal VD signal when no external HD/VD signal is input.
Mode 2 (Reset mode)
In this mode, an internal video signal is output from a trigger pulse after a certain period of time.
Video sync is always fixed with odd field for XC-ST70 and even field for XC-ST70CE.
For more details of each timing chart, refer to pages 16 to 23.
*
Setting of external trigger shutter speed
There are two ways to set the shutter speed.
Using DIP switch on the rear panel
Mode 1 (Non-reset mode)
Switch
*
1/100
1
–
2
–
3
–
4
1
5
6
0
7
1
8
1
Mode 2 (Reset mode)
Switch
*
1/100
1
–
2
–
–
3
4
1
5
6
0
0
7
8
1
Using trigger pulse width
•
An arbitrary shutter speed can be obtained by setting the trigger pulse width to the range of 2 sec to 250
msec.
Mode 1
Switch
(Non-reset mode)
0
1
0
2
0
3
4
0
5
Frame: 0 / Field: 1
0
6
1
7
1
8
8
1/125
1/250
1/500
1/1000
1
0
1
0
1
1
0
0
0
0
0
0
Frame: 0 / Field: 1
0
0
0
1
1
1
1
1
1
1/125
1/250
1/500
1/1000
1
0
1
0
1
1
0
0
0
0
0
0
Frame: 0 / Field: 1
0
0
0
0
0
0
1
1
1
Mode 2
Exposure time = Trigger pulse width + 97 sec (XC-ST70)
(Reset mode)
0
0
Note
0
0
0
0
1: ON
1
0: OFF
1/2000
1/4000
**
1/10000
0
1
0
0
0
1
1
1
1
0
0
0
0
0
0
1
1
1
1
1
1
1/2000
1/4000
**
1/10000
0
1
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
0
1
1
1
: 1. lt is recommended to set DIP switch 5 for field selection.
(The field selection is about two times in sensitivity as high as the frame selection.)
2. After a trigger pulse is input, a new trigger pulse must not be input before the video
signal obtained by the trigger pulse has been output.
1
1
1
0
0
1
1
*
The external trigger shutter speed is set to
1/100 sec for XC-ST70(EIA) and 1/120
sec for XC-ST70CE(CCIR).
1
1
**
The external trigger shutter speed is
1
set to 1/10000 sec for XC-ST70(EIA) and
1/8000 sec for XC-ST70CE(CCIR).
0
6
0
1: ON
0
0: OFF
1
–: Any
120 sec (XC-ST70CE)