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Video Test Generator User Guide 567
VSPW
Vertical Sync Pulse Width
Class Format parameter setting - Synchronization
Description Establishes the width of the vertical sync pulse in lines. If the type specified for the
selected sync signal (see SSST , ASCT , DSCT , or DSST commands) is one of the CCIR
types, then the actual sync pulse width output by the generator will be 1/2 line shorter than
the whole number specified. The VSPW? query returns the current setting of VSPW.
Command syntax VSPW lines
Query syntax VSPW?
Query response lines
Other required
commands
The FMTU command instructs the generator to use the new setting. The ALLU command
updates hardware to the new setting and redraws the test image.
Example
VSPW 3 // Set V sync width to 3 lines in buffer
FMTU
// Update hardware to current buffer contents