Quantum Data 802R User's Guide download pdf (Page 356)

346 Appendix A Command Reference

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

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

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.

GAMC 1 // Enable gamma correction in buffer

GAMA 2.2 // Set correction factor in buffer

FMTU // Update hardware to current buffer contents

Quantum Data 802R User's Guide Page 356