568 Appendix A Command Reference
VRES
Vertical RESolution
Class Format parameter setting - Video resolution
Description Establishes the number of active lines per frame. The VRES? query returns the current
setting of VRES.
Command syntax VRES lines
lines
min =
• 1 (when SCAN = 1) or
• 2 (when SCAN = 2)
max = the lesser of
• VTOT-1 (when SCAN = 1) or
• VTOT-3 (when SCAN = 2)
Must be an even number when SCAN = 2.
Query syntax VRES?
Query response lines
Other required
commands
The ALLU command updates hardware to the new setting and redraws the test image.
Example
VRES 480 // Set 480 active lines in buffer
ALLU // Configure hardware and redraw image
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