Quantum Data 881 User Manual page 756

HSPP
Class
Description
Command syntax
Query syntax
Query response
Other required
commands
Example
378 Appendix A Command Reference
Horizontal Sync Pulse Polarity
Format parameter setting - Synchronization
Establishes the logic sense of the digital horizontal sync outputs. Setting polarity to 1
causes the leading edge of horizontal sync to be a low-to-high transition. Setting polarity to
0 causes the leading edge of horizontal sync to be a high-to-low transition. The HSPP?
query returns the current polarity of HSPP.
HSPP polarity
polarity
0 = active-low (negative going pulse)
1 = active-high (positive going pulse)
HSPP?
0 or 1
To use digital horizontal sync, it must be gated on with the
separate H and V sync must be selected with the
instructs the generator to use the new settings. The
hardware to the new settings and redraws the test image.
HSPP 0 // Set active low H sync in buffer
HSPG 1 // Enable H sync output in buffer
SSST 1 // Select H&V sync type in buffer
FMTU // Update hardware to current buffer contents
HSPG command and digital
SSST command. The FMTU
ALLU command updates the
command