Quantum Data 802BT User Manual page 426

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