Quantum Data 881 User Manual page 661

DVSM
Class
Description
Command syntax
Related commands
Examples
882 Video Test Instrument User Guide (Rev A.35)
Digital Video Sampling Mode
Format parameter setting - Digital video signal
Controls how the color difference components (CbCr) are sampled when YCbCr signal
type is selected. Set DVST to a signal type that supports the sampling mode specified by
DVSM.
DVSM mode
mode
0 = RGB 4:4:4 (default)
2 = 4:2:2 (color difference components are sampled at half the pixel rate; luminance is
sampled at full pixel rate)
4 = 4:4:4 (both luminance and color difference components are sampled at the pixel
rate)
NBPC, DVST
DVST 10 // Selects RGB digital video type
DVSM 0 // Specifies default condition
FMTU // Applies the format change
DVST 14 // Selects YCbCr digital video type
DVSM 2 // Specifies 4:2:2 sampling mode
FMTU // Applies the format change
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