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302 Appendix A Command Reference
DVQM
Digital Video Quantization Mode
Class Format parameter setting - Digital video signal
Description Controls the gamut of digital signals per the EIA/CEA-861-B standard.
The DVQM? query returns the current DVQM mode.
Command syntax DVQM mode
mode
Use the following table to determine the proper mode (0, 1, or 2).
Notes:
Computer (for example, DMT and CVT) formats set DVQM=0 for full gamut.
DVQM can be set to 1 to test the undershoot/overshoot signal code margins (for
example, see SMPTE 296M section 7.12).
Television formats (for example, 1080i29) set DVQM=2 for reduced gamut required by
various television standards (for example, EIA/CEA-861-B).
Query syntax DVQM?
Example
DVQM 1
FMTU
Related commands LMIN, LMAX, NBPC
DVQ
Mode
Components
NBPC=8 gamuts NBPC=10 gamuts NBPC=12 gamuts
LMIN LMAX LMIN LMAX LMIN LMAX
0 RGB 0 255 0 1023 0 4095
YC
b
C
r
0 255 0 1023 0 4095
1 RGB 1 254 4 1019 16 4079
YC
b
C
r
1 254 4 1019 16 4079
2 RGB 16 235 64 940 256 3760
YC
b
C
r
16 240 64 960 256 3840
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