Quantum Data 780B User Manual page 198

780B Video Generator/Analyzer – User Guide
Table 11-1: List of Commands (alphabetical) – For Testing HDMI Sink Devices
Command Description
DACG Specifies which audio
channels are activated
(gated on) for LPCM
audio.
DVSM Sets or queries the
digital video sampling
mode. Applies only for
HDMI.
DVST Sets or queries the
digital video type.
Applies only for HDMI.
DVQM Sets or queries the
digital video quantizing
range. Applies only for
HDMI.
EDID? Shows the EDID (in
hex) of the sink device
connected to the 780B
Tx port.
FMTL Loads a format.
FMTU
Activates a format that
has been loaded and
queries for the
currently active format.
December 1, 2014
Syntax Parameters
DACG <mask> Where mask is an 8 bit
value.
Each bit corresponds to a
channel with the first bit (bit
0) associated with channel 1,
bit 1 for channel 2 and so on
to bit 7 corresponding to
channel 8. The bit position
values are:
Bit 0 – Ch 1 = 1
Bit 1 – Ch 2 = 2
Bit 2 – Ch 3 = 4
Bit 3 – Ch 4 = 8
Bit 4 – Ch 5 = 16
Bit 5 – Ch 6 = 32
Bit 6 – Ch 7 = 64
Bit 7 – Ch 8 = 128
You can enable multiple
channels.
DVSM <sampling> Where sampling is one of:
DVSM? 0 – RGB (4:4:4)
2 – YCbCr (4:2:2)
4 - YCbCr (4:4:4)
DVST<type> Where type is one of:
DVST? 10 – RGB
14 – YCbCr
DVQM <mode> Where range is one of:
DVQM? 0 – 0-255 (8 bit)
1 – 1-254 (8 bit)
2 – 16-235 (8 bit RGB
EDID? Not applicable
FMTL <format> Where format is one of the
formats listed in Table 7-2
and Table 7-3
FMTU Not applicable
FMTU?
16-240 (8 bit YCbCr)
Page 197
Command Example
To enable channel 1 only:
DACG 1
ALLU
To disable all channels:
DACG 0
ALLU
To enable all channels:
DACG 255
ALLU
To enable channel 8 only:
DACG 128
ALLU
To enable channels 1-6:
DACG 127
ALLU
To set the HDMI sampling
mode to RGB (4:4:4):
DVST 10
DVSM 0
ALLU
To set the HDMI sampling
mode to YCbCr (4:4:4):
DVST 14
DVSM 4
ALLU
To set the HDMI quantizing
range to 0-255: to RGB:
DVQM 0
ALLU
To read a sink device's EDID:
EDID?
01FFFFFFF01...
See example below for FMTU
To load and invoke a format
load command:
FMTL 1080i60
FMTU
Revision A7