Quantum Data 780B User Manual page 201

780B Video Generator/Analyzer – User Guide
Table 11-1: List of Commands (alphabetical) – For Testing HDMI Sink Devices
Command Description
VRAT? Queries the vertical
rate (field rate for
interlaced formats) of
the outgoing video
format.
VSPD Sets or queries the
vertical sync pulse
delay of the active
timing. Express in
number of lines.
VSPW Sets or queries the
vertical sync pulse
width of the active
timing. Express in
number of lines.
VSPP Sets the polarity of the
vertical sync pulse.
VSPG Enables or disables
the vertical sync pulse.
VTOT Sets the vertical total
number of lines of the
video timing.
XVSI Selects the interface.
XVSG
Determines which
video components are
active when a format
is selected.
December 1, 2014
Syntax Parameters
VRAT? Not Applicable
VSPD <lines> Where lines can be within
the range of:
VSPD?
Min = 1 (if scan = 1)
< lines >
Max = VTOT – 1 (if scan = 1)
2)
VSPW <lines> Where lines are the number
of lines for the vertical pulse
VSPW?
width
< lines >
VSPP <polarity> Where polarity can be one
of:
VSPP?
0 = high to low transition
<polarity>
1 = low to high transition
VSPG <enable> Where enable is:
VSPG? 0 = disable
1 = enable
< enable >
VTOT <lines> Where lines are the total
number of lines.
VTOT?
< lines >
XVSI <interface> Where interface is one of:
XVSI? 2 – DVI (Computer)
3 – DVI (TV)
4 - HDMI
9 – Analog YPbPr or RGB)
XVSG R G B Where R G and B are:
FMTU or ALLU R = 0 (Off) or 1 (On)
XVSG? G = 0 (Off) or 1 (On)
R G B B = 0 (Off) or 1 (On)
Command Example
To read the vertical rate of the
outgoing HDMI signal of
1080i30:
VRAT?
+60.000E+00
To set the horizontal sync
pulse delay:
VSPD 11
= 2 (if scan = 2) ALLU
= VTOT – 3 (if scan =
To set the horizontal sync
pulse width:
VSPW 3
ALLU
To set the horizontal sync
pulse polarity to low to high
transition:
VSPP 1
ALLU
To enable the vertical sync
pulse:
VSPG 1
ALLU
To set the vertical total to 525
lines:
VTOT 525
ALLU
To set the interface:
XVSI 4
ALLU
To set gate on or off red, green
or blue components:
XVSG 1 0 1 (Red On; Green
Off; Blue On)
ALLU
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