Avmute Test - Quantum Data Gen 2 980 User Manual

980 HDMI Protocol Analyzer User Guide

10.4 AVmute Test

The AVmute Test enables you to verify that an HDMI source is supporting AVmute properly. The AVmute test,
verifies that AVmute had been set for the conditions shown below:

Vsync has been changed compared to previous frame.

HActive is inconsistent in the current frame.

Invalid Frame Time Duration based on VSYNC time-stamp.

Frame time duration change more than 0.02% compare to the previous frame.

Pixel rate change during the video frame for more that 0.02%.

VIC in AVI infoframe is changed compare to the previous frame.

AVI info frame is not present in current frame.

VTotal is changed compare to the previous frame.

VSYNC duration is changed compare to the previous frame.

HSYNC duration is inconsistent in current frame.
The setup procedures described above in the section:
should be followed for the AVmute tests. These setup procedures are listed below:
1. Configure the 980 HDMI Protocol Analyzer in the proper mode HDMI.
2. Set the threshold of the +5V.
3. Configure the 980 HDMI Protocol Analyzer Rx port with the proper EDID.
4. View the incoming video in real time to check the status of the device under test.
To run the AVmute test:
1. Select the 980 that you are using to capture the data from your HDMI source device under test.
2. Set the Capture Buffer Size slidebar to a percent value to meet your requirements. You can capture up to
about 2GB of data which is about 1150 frames at 576p/480p and about 204 frames at 1080p which includes
the video. Since you do not need to capture the video data for the audio analysis test, you can set this to a
lower value such as 5%.
3. Set the Trigger Position slidebar to a percent value to meet your requirements. This slide bar enables you to
set the position of the trigger event within the captured data. This is a slidebar that provides an indication (on
the right) of the location within the captured data, expressed as a percent with 0% indicating that the trigger
event occurs at the beginning of the captured data and 100% indicating that the trigger event occurs at the end
of the captured data.
Page 236
Analyzing HDMI Data with your 980 Protocol Analyzer
Rev. A1
December 19, 2012