Quantum Data 881, User Manual

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882 Video Test Instrument User Guide (Rev A.35) 375
HSIZ
Horizontal SIZe
Class Format parameter setting - Video resolution
Description Establishes the horizontal physical size of the image on the display. Units expected (or
returned) vary according to the last mode set with USIZ command. The HSIZ command is
context sensitive and must appear between begin and end commands FMTB and FMTE .
The HSIZ? query returns the current setting of HSIZ.
Note: Make sure that the USIZ parameter is properly set before using the HSIZ command.
Changing the USIZ setting after entering HSIZ will convert the size to match the new unit
of measure.
Command syntax HSIZ physical_size
physical_size
positive value (floating point accepted)
Query syntax HSIZ?
Query response Returns physical size (floating point returned)
Other required
commands
The units of measure must be properly set by USIZ before entering HSIZ. The ALLU
command updates hardware to the new setting and redraws the test image, taking the
new size into account.
Example
FMTB // Begin editing session One or more format editing commands
// ...
USIZ 1 // Select inches as unit of measure in buffer
HSIZ 10.4 // Set width to 10.4 in buffer
VSIZ 7.8 // Set height to 7.8 in buffer
ALLU // Test the new settings
// more format editing commands
// ...
FMTE // End of editing session