Sony XCHR70 Podręcznik techniczny - Strona 26
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When set to Mode 2 (Reset mode)
Setting the shutter speed using trigger pulse width
External trigger shutter operation
Trigger*
1
Exposure time (Te)*
Video out*
5
1 H to 2 H
*
4
WEN
796 H (Binning OFF)
398 H (Binning ON)
*1 This is an external input signal.
*2 Exposure time (Te)
Te = Trigger pulse width + 5 µ sec
(The effective trigger pulse width for the external
trigger shutter operation is between 2 µ s and 1/4 s.)
*3 Normal operation is resumed when the trigger
pulse width is 1/3 s or more. The trigger falling
edge restores external trigger shutter operation. At
this time, the 50 ms after the falling edge of the
trigger pulse is an external trigger input inhibition
area. There is no guarantee of operation for any
trigger input in this period.
Trigger pulse width*
2
Mode transition state
3
Normal operation*
3
*4 The video out is started after 1 H to 2 H from the
trigger falling edge, then the image is output
synchronized with the WEN pulse rising edge.
*5 With the XC-HR70, a signal synchronized with
VD cycle is not output.
Note
An image is not output correctly when the next trigger
is input before the image for the previous trigger has
been output.
Mode Settings
External input
inhibition area
External trigger
(50 ms)
shutter operation
Exposure time
(Te)*
2
1 H to 2 H
4
*
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