Quantum Data 881 User Manual page 948

VSPD
Class
Description
Command syntax
Query syntax
Query response
Other required
commands
Example
570 Appendix A Command Reference
Vertical Sync Pulse Delay
Format parameter setting - Synchronization
Establishes the delay between leading edge of blanking in the first (or even) field and the
leading edge of the vertical sync pulse. When interlacing, delay between end of video and
leading edge of vertical sync before second (or odd) field is 0.5 line shorter than the
whole-line delay specified. The VSPD? query returns the current setting of the vertical
sync pulse delay.
VSPD lines
lines
min =0 (when SCAN = 1) or 1 (when SCAN = 2)
max = VTOT-VRES-VSPW (when SCAN = 1) or [(VTOT-VRES-1) /2]-VSPW (when
SCAN = 2)
VSPD?
lines
The FMTU command instructs the generator to use the new setting. The
updates hardware to the new setting and redraws the test image.
VSPD 11 // Set V sync delay to 11 lines in buffer
FMTU // Update hardware to current buffer contents
ALLU command