Quantum Data 801GC, 801GF, 801GX manual Vertical TOTal lines per frame, 175, Vtot?

VTOT	Vertical TOTal lines per frame
Classification:	Format parameter setting
Command Syntax:	VTOT <lines>
Limits:	<lines> must be an odd number when SCAN = 2
	min = 2
	max
	801GC-ISA = 4096 @ SCAN=1; 4097 @ SCAN=2
	801GF-ISA = 4096 @ SCAN=1; 8191 @ SCAN=2
	801GP = 2048
	801GC, GX = 4096 @ SCAN=1; 4097 @ SCAN=2
	801GF = 4096 @ SCAN=1; 8191 @ SCAN=2
Query Syntax:	VTOT?
Query Response:	<lines>
Description:	The VTOT command establishes the total number of lines per
	frame. When interlacing (SCAN=2), VTOT must be odd. The
	VTOT? query returns the current setting of VTOT.
	The frame or picture refresh rate is equal to the quotient of
	HRAT divided by VTOT.
	The field or vertical rate is equal to the frame rate when SCAN
	= 1 (non-interlaced operation).
	The field or vertical rate is equal to twice the frame rate when
	SCAN = 2 (non-interlaced operation).
	Note – The current version of the firmware does not allow you
	to directly enter a specific field or frame rate when setting up
	a format. If your test specifications call for a specific field,
	frame or vertical refresh rate, enter suitable values for HRAT,
	SCAN and VTOT to give you the desired rate.

Other Required Cmds: The FMTU command instructs the generator to use the new setting. The ALLU command updates hardware to the new setting and redraws the test image.

Example: V T O T 5 2 5 / / S e t t o t a l l i n e s / / f r a m e t o / / 5 2 5 i n b u f f e r

F M T U / / U p d a t e h a r d w a r e t o c u r r e n t / / b u f f e r c o n t e n t s

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