Quantum Data 802BT, User Manual

Page: 356 / 744

346 Appendix A Command Reference
GAMA
GAMmA correction factor
Class Format parameter setting - Digital video signal
Description Establishes the current video gamma correction factor. The GAMA? query returns the
current setting of the gamma correction factor.
Command syntax GAMA factor
factor
min = 0.1 (floating point accepted)
max = 10.0 (floating point accepted)
For HDMI video signals GAMA is always 2.222
Query syntax GAMA?
Query response factor
Other required
commands
Gamma correction must be enabled with the GAMC command in order to use the gamma
correction factor. 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
GAMC 1 // Enable gamma correction in buffer
GAMA 2.2 // Set correction factor in buffer
FMTU
// Update hardware to current buffer contents