Quantum-data 801GC Uživatelský manuál stáhnout pdf (Strana 301)

6-175

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: VTOT 525 // Set total lines//frame to

// 525 in buffer

FMTU // Update hardware to current

// buffer contents

1 2 ... 296 297 298 299 300 301 302 303 304 305 306 ... 355 356

Žádné komentáře

Quantum-data 801GC Uživatelský manuál Strana 301