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Operation Mode

TM-250 Miniature CCD Camera

FIGURE 13. Trigger Width Reset/Restart Shutter Mode Timing

5.2 Asynchronous Operation

5.2.1 TM-250 Strobe Asynchronous Shutter Mode

This asynchronous mode is intended for use in strobe applications. In this mode, the horizontal timing

can be synchronized with external HD. The camera operates in the same way as in Pre-reset mode async

operation. But the leading edge of VINIT simply resets the camera and the discharge does not occur in

this mode so that the strobe must engage after VINIT pulse implied but before transfer occurs at 11th

line for TM-250, and at 16th line for TM-260. When the F2 switch is Up (ON) in Frame storage mode,

the camera obtains both odd and even ﬁeld pictures.

TABLE 7. Trigger Width Reset/Restart Shutter Mode

OFF

ASY

CYC

TRIGGER

Polarity

Up Down Up Up Up Up Positive

F2: not applicable.

TABLE 8.

Strobe Asynchronous Shutter Mode

OFF

ASY

CYC

TRIGGER

Polarity

Down Up Down Down Down Down Negative

F2 Up: Both odd and even ﬁeld pictures are obtained in Frame mode.

EXT VD (R.R.)

Shutter Trigger

D SUB pulse

Transfer

Exposure

V Shift

Video Out

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Pulnix TM-250 Bedienerhandbuch Seite 28