Sony XC-ST30 Technisches Handbuch - Seite 10
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XC-ST50/50CE
XC-ST30/30CE
ELECTRONIC SHUTTER
External trigger shutter
By inputting an external trigger, the image of a high-speed moving object can be captured in an exact position.
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 camera switches to normal (continuous) video operation.
There are two modes for timing in which a video signal is obtained.
• Mode 1 (Non-reset mode)
In this mode, an output video signal is synchronized with the VD signal after the triggered exposure is
complete.
•
An output video signal synchronized with the external VD signal when an external HD/VD signal is input.
•
An output video signal synchronized with an internal VD signal when no external HD/VD signal is input.
• Mode 2 (Reset mode)
In this mode, a video signal is output soon after exposure is complete.
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
1/125
1
–
2
–
3
–
4
1
5
6
0
7
1
8
1
Mode 2 (Reset mode)
*
1/100
1/125
Switch
1
–
2
–
3
–
1
4
5
6
0
7
0
1
8
• Using trigger pulse width
•
Set all DIP switches 1 to 4 on the rear panel to 0.
An arbitrary shutter speed can be obtained by setting the trigger pulse width to the range of 2 µsec to 250
•
msec.
Mode 1
Switch
(Non-reset mode)
0
1
0
2
3
0
0
4
5
Frame: 0 / Field: 1
0
6
1
7
8
1
8
1/250
1/500
1/1000
1
0
1
0
0
1
1
0
0
0
0
1
0
0
0
0
Frame: 0 / Field: 1
0
0
0
0
1
1
1
1
1
1
1
1
1/250
1/500
1/1000
1
0
1
0
0
1
1
0
0
0
0
1
0
0
0
0
Frame: 0 / Field: 1
0
0
0
0
0
0
0
0
1
1
1
1
Exposure time = Trigger pulse width + 97 µsec (XC-ST50/ST30)
Mode 2
(Reset mode)
0
0
Note
0
0
0
0
1: ON
1
0: OFF
1/2000
1/4000
**
1/10000
1
0
1
0
1
1
1
1
1
0
0
0
0
0
0
1
1
1
1
1
1
1/2000
1/4000
**
1/10000
1
0
1
0
1
1
1
1
1
0
0
0
6
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 higher sensitivity than frame selection.)
2. After a trigger pulse is input, a new trigger pulse should not be input before the video
signal obtained by the trigger pulse has been output.
*
The external trigger shutter speed is set to
1/100 sec for XC-ST50/ST30(EIA) and 1/120
sec for XC-ST50CE/30CE(CCIR).
**
The external trigger shutter speed is set to
1/10000 sec for XC-ST50/ST30(EIA) and
1/8000 sec for XC-ST50CE/30CE(CCIR).
1: ON
0: OFF
–: Either ON or OFF
120 µsec (XC-ST50CE/ST30CE)