Toshiba IK-53V instruction manual Reset Restart, Long Term Exposure

4-3. Reset Restart

Input of an external reset-restart signal (VD) permits one screen of information to be output at an arbitrary timing. To set this mode, set the external trigger mode selection switch (i.e., MODE SELECT switch bits 5, 6, and 7) as illustrated in the diagram below.

ON

	Rear			MODE SELECT Switch
75Ω	HD/VD	INT		1	O
	EXT
	OFF			2	N
			SHT	3
			TRG	4
			P.S
				5
			M.G
				6
	VIDEO OUT	MIN	MAX	7
	DC IN/SYNC		M GAIN	8

9

0

Reset restart

5

6

7

Long Term Exposure

When the camera is used and sufficient sensitivity cannot be obtained for the reset-restart function under normal operating conditions, or when observation of the trail of a moving subject is desired, the exposure time can be extended to allow high-sensitivity images to be obtained. To achieve this, please input from an external source a VD signal that has an ex- panded VD pulse and VD pulse interval.

Input Timing Chart Example

External HD IN

External VD IN
	V reset		V reset
	About 1H		About 1H
(Internal VD)
Exposure period		Exposure period		Exposure period

VIDEO OUT

VIDEO INDEX

1V 1V

External VD interval: more than 1V

9