Partial scanning vertical timing, Data OUT Dval

CV-M2

6.2.9. Partial scanning vertical timing

Partial scanning has 3 pre-selected vertical centred areas 1/2, 1/4 and 1/8. SC=1 through SC=3. With SC=3, the start and the height of the partial scanned area can be programmed with 1 line interval. The start line can be programmed with PS=1 through 1151. The scanned height can be programmed with PC=50 though 1200. Partial scanning will operate with single or dual channel output. Partial scan is done by a high-speed dump read out of the areas over and under the area of interest. This partial scanned area is read out with normal speed. The high-speed dump read out (Front of Frame and in Back of Frame) is done with a speed 18 times faster for single channel, and 10 times faster for dual channel.

The figures on the timing diagram below are for 1/2 partial scanning.

FVAL

LVAL

Hi gh Speed	Fr ont of Fr ame
Hi gh Speed
Tr ansf er

SUB

Exposur e

Per i od

EEN

2L 31L( *)

1 FVAL per i od	( *) Var i abl e Number
1 FVAL per i od
670L( *)
668L( *)	2L
668L( *)

Back of Fr ame

		0. 5L
Ef f ect i ve Li nes		OB	lank
			B
600L( *)	31L( *)	4L	2L

DATA OUT

DVAL

1 2 3 4 5

5	9	6	5	9	7	5	9	8	5	9	9	6	0	0
5	9		5	9		5	9		5	9		6	0

All figures marked with (*) will change with other partial settings. See table below. 1LVAL = 47.9 ∝sec (single). 27.3 ∝sec (dual).

Fig. 23. Partial scanning vertical timing

The following table shows the figures for partial scanning.

The maximum frame rate (FPS) for single and dual channel readout is shown for normal mode. TR=0. For triggered modes it will be lower, because the accumulation time is added to the read out time. 1LVAL = 47.9 ∝sec (single). 27.3 ∝sec (dual).

Table showing values for the vertical timing.

Single channel output									Frame Start						Effect.		Frame End							Frame
				Start			Stop	OB			HS				video		HS			OB				rate
Mode	Scanning			line			line	[	]		[	]			[	]	[	]		[	]			[	]	Remarks
Mode	Scanning							LVAL			LVAL				LVAL		LVAL			LVAL				FPS
SC=0	Full		1			1200		6			0			1200			0			10			17.17			Full scan
SC=1	1/2 partial		301			900		2			17			600			17			6			32.52			Vertical centred
SC=2	1/4 partial		451			750		2			26			300			26			6			57.99			Vertical centred
SC=3	1/8 partial		526			675		2			30			150			30			6			95.77			Vertical centred
SC=4	Programmable		1-1151			50-1200		2			-			50-1200			-			6			-			Start & height program.

Dual channel output									Frame Start						Effect.		Frame End							Frame
				Start			Stop	OB			HS				video		HS			OB				rate
Mode	Scanning			line			line	[	]		[	]			[	]	[	]		[	]			[	]	Remarks
Mode	Scanning							LVAL			LVAL				LVAL		LVAL			LVAL				FPS
SC=0	Full	1			1200			6		0			1200				0		10			30.12				Full scan
SC=1	1/2 partial	301			900			2		31			600				31		6			54.67				Vertical centred
SC=2	1/4 partial	451			750			2		46			300				46		6			91.58				Vertical centred
SC=3	1/8 partial	526			675			2		53			150				53		6			138.75				Vertical centred
SC=4	Programmable	1-1151			50-1200			2		-			50-1200				-		6			-				Start & height program.

OB = Optical Black. HS = High-Speed dump read out.

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CV-M2 specifications

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