Quantum Data 780B User Manual page 208

780B Video Generator/Analyzer – User Guide
Table 11-4 below provides the list of commands supported for testing HDMI source devices:
Table 11-4: List of Commands – For Testing HDMI Cables and Distribution Networks
Command Description
CBLT?
Cable Test. Runs pseudo random
noise error test on the TMDS R,G,B
channels of an HDMI cable.
CBL2? Runs continuity test on +5V, Hot
Plug and DDC leads in an HDMI
cable.
Table 11-5 below provides the list of commands supported for running the Frame Compare test:
Table 11-5: List of Commands – For Testing Distribution Networks with the Frame Compare Test
Command Description
PDAX:CAPF
Initiates the capture of a reference
frame for the Frame Compare test.
PDAX:FRMS
Specifies the number of frames to
capture during the Frame Compare
test.
PDAX:REFG
Enables or disables auto reference
capturing for the Frame Compare
test. If this parameter is disabled
you have to manually capture a
reference frame.
December 1, 2014
Syntax
CBLT?
<x errors>
Where x errors is the number of
errors detected on R, G and B
channels.
CBL2?
<+5v results>
>Hot Plug results>
<DDC results>
Where +5V results, hot plug results
and DDC results indicate Pass or
Fail for each lead or lead pair.
Syntax
PDAX:CAPF
PDAX:FRMS <frames>
Where frames are the number of
frames that you want to capture
and compare to the reference
frame. Valid values are 0-250.
Default value is 10.
You can query the current value
with:
PDAX:FRMS?
PDAX: REFG <enable>
Where enable is either 0 to disable
or 1 to enable auto reference
capturing.
Default value is o to disable.
You can query the current value
with:
PDAX: REFG?
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Command Example
To run a pseudo random noise
error test on the TMDS R,G,B
channels of an HDMI cable:
CBLT?
0 errors
To run a cable test on the +5V,
DDC and hot plug leads:
CBL2?
+5v: PASS
Hot Plug: PASS
DDC: PASS
Command Example
To capture a reference frame:
PDAX:CAPF
To specify that 100 incoming
frames will be used to compare
with the reference frame:
PDAX:FRMS 100
To enable auto reference
capturing:
PDAX: REFG 1
Revision A7