DXC-990/990P, DXC-390/390P Sales Manual
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39
12. Technical Appendix
Strobe function
• The video signal outputs an odd field image first then an even field image, making for easy operation
when connecting the camera with a Frame Grabber Board.
• The timing of the WEN pulse and video signal acts as a connection with a Frame Grabber Board.
• The strobe function is designed for dark lighting conditions with a flash. The strobe function does not
work under bright conditions such as outdoors.
• It is possible to monitor the image just before a flash is emitted.
• The output signal is an image exposed for a few frames.
• Keep ‘CCD MODE’ setting to ‘FRAME’.
• Do not use automatic function, such as AGC, CCD IRIS, AWB, ATW, Flicker canceller, etc.
• It is not possible to change the electronic shutter speed.
■ Timing chart.
WEN 1
A flash is emitted during this period.
ODD EVEN ODD ODD ODDEVEN EVEN EVEN ODDODD EVEN
ODD EVEN ODD ODD ODDEVEN EVEN EVEN ODDODD EVEN
VD
WEN
XSG
Video
TRIG IN
WEN
XSG
Video
XSUB
(1+ ) FRM
(1.5+
) FRM
(0.5+
) FRM
(1+
) FRM
EVEN
ODD
EVEN
ODD
:0~0.5 FRM
*In the case of flashing in an even field
*In the case of flashing in an odd field
TRIG IN
DXC_990/390.qxp 01.3.2 3:46 PM Page 39
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