Pulnix TM-250 Manual de Instruções descarregar pdf (Página 29)

Page 23

Operation Mode

TM-250 Miniature CCD Camera

FIGURE 14. Strobe Asynchronous Shutter Mode Timing

5.2.2 Post-Reset Asynchronous Shutter Mode

The operation of this shutter is similar to Cyclic Fast mode. But the exposure starts in sync with an

external pulse called VINIT pulse. On the leading edge of VINIT, single discharge pulse occurs and all

the photo-charge is damped. Different from Pre-reset Mode, the internal counter reset takes place when

predeﬁned exposure time has passed after the discharge. The photo transfer occurs at the ﬁrst line of the

odd ﬁeld right after the reset. Vertical shift starts after 11H for TM-250, and after 16H for TM-260.

Only the image in the ﬁrst odd ﬁeld is valid. SYNC signal is continuous when F2 switch is Up (ON).

SYNC is available only in the one ﬁeld right after VINIT when F2 is down (OFF).

External HD

VINIT

Internal VD

Strobe

Transfer (CCD)

Transfer (EVEN)

Video Out

Reset Reset

F2 = OFF F2 = ON

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 40 41

Sem comentários

Pulnix TM-250 Manual de Instruções Página 29