Quantum Data 780B, User Manual

Page: 208 / 224

780B Video Generator/Analyzer
– User Guide
Page 207
December 1, 2014 Revision A7
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 Syntax Command Example
CBLT? Cable Test. Runs pseudo random
noise error test on the TMDS R,G,B
channels of an HDMI cable.
CBLT?
<x errors>
Where x errors is the number of
errors detected on R, G and B
channels.
To run a pseudo random noise
error test on the TMDS R,G,B
channels of an HDMI cable:
CBLT?
0 errors
CBL2? Runs continuity test on +5V, Hot
Plug and DDC leads in an HDMI
cable.
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.
To run a cable test on the +5V,
DDC and hot plug leads:
CBL2?
+5v: PASS
Hot Plug: PASS
DDC: PASS
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 Syntax Command Example
PDAX:CAPF Initiates the capture of a reference
frame for the Frame Compare test.
PDAX:CAPF To capture a reference frame:
PDAX:CAPF
PDAX:FRMS Specifies the number of frames to
capture during the Frame Compare
test. 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?
To specify that 100 incoming
frames will be used to compare
with the reference frame:
PDAX:FRMS 100
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.
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?
To enable auto reference
capturing:
PDAX: REFG 1