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FSPP
Class
Description
Command syntax
Query syntax
Query response
Other required
commands
Example
344
Appendix A Command Reference
Frame Sync Pulse Polarity
Format parameter setting - Synchronization
Establishes the logic sense of the digital frame sync output. Setting polarity to one (1)
causes the leading edge of frame sync to be a low-to-high transition. Setting polarity to
zero (0) causes the leading edge of frame sync to be a high-to-low transition. The FSPP?
query returns the current polarity of FSPP.
FSPP polarity
polarity
0 = active-low (negative going pulse)
1 = active-high (positive going pulse)
FSPP?
0 or 1
To get a pulse, frame sync must first be enabled with the
command instructs the generator to use the new settings. The
the hardware to the new settings and redraws the test image.
FSPG 1
// Enable Frame Sync
FSPP 1
// Set for positive going pulse
FSPW 20
// Make the pulse 20 pixels wide
FSPG 300
// Pulse to occur 300 lines after
// the last line of active video
FMTU
// Update hardware to new settings
FSPG
command. The
FMTU
ALLU
command updates
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