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XC-ST50/50CE

XC-ST30/30CE

TIMING CHART OF EXTERNAL TRIGGER SHUTTER - MODE 1 (NON-RESET MODE)

For setting the shutter speed using TRG width

HD/VD input

• Continuous HD input and single VD input

External trigger shutter operation

Trigger

Exposure time

External HD

External VD

(Single VD)

T : T = 10 µs to 100 ms

Video out

WEN

1: This is a signal input from external equipment. Be sure to input both HD and VD signals in this case. The

phase of the VD signal must coincide with the falling edge of the HD signal during input operation.

2: Exposure time Te

(The trigger width should be between 2 µs and 1/4 s)

3: The normal operation state is engaged when the trigger 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 trigger input inhibition area.

During the trigger inhibit period, an input trigger may be missed.

4: An external VD signal must be input between 10 µs and 100 ms from the falling edge of a trigger pulse (as

shown by 1 and 2 in the figure). For the input (except described above), the operation cannot be ensured.

5: When the external trigger shutter mode changes to normal operation mode, one WEN signal is output.

Note

: An image is superimposed when the next exposure ends before the previous image is output.

250H

(XC-ST50/ST30)

293H

(XC-ST50CE/ST30CE)

Te = Trigger width + 97 µs (XC-ST50/ST30)

Te = Trigger width + 120 µs (XC-ST50CE/ST30CE)

Normal operation

1/3 s or more

Mode transition

External input

External trigger

inhibition area

shutter operation

(50 ms)

Exposure

time

min 10 µs

250H

(XC-ST50/ST30)

293H

(XC-ST50CE/ST30CE)