980 HDMI Protocol Analyzer Application Guide
– Source Compliance Test Automation
Rev. A1
Page 21
Feb 14, 2013
Test ID
% of full buffer (2GB)
Resulting/Required buffer size
7-36
– High Bitrate Audio
41.492
743MB
7-37
– One Bit Audio
4.48
88MB
7-38
– 3D Video Format Timing
4.322
77MB
7-39
– 4K x 2K Video Format Timing
4.322
77MB
7-40
– Extended Colorimetry Transmission
4.322
77MB
p-scope> pcap mode all
// captures all data types (video, data islands)
Pre-Capture Filter set to: No filtering
p-scope> pcap trig vsync 0
// sets the capture trigger to vsync
cap_trig: trigger basic type=0x1 position=0%
p-scope> pcap start
// 980 initiates capture
Waiting for the capture trigger event to occur…
Vsync Asserted
INFO: Capture Trigger condition is satisfied
END: pcap_capture_start
Capture complete
Capturing data…
END: Capture complete, capture size 743.53MB [circular], buffer size 743.53MB
Post-Capture Processing (Metadata Phase)
p-scope> pcap timing
// generating field timing information.
END: pcap_info info request type=112 complete
p-scope> pcap decode
// decode the captured data.
END: decode request complete
Indexing the decode data…
p-scope> pcap index
// indexing the decoded data.
Performing the Capture (Raw TMDS)
In the case of the 7-16,17,18,19 Protocol Tests, the 980 has to also look at the protocol data such as the preamble
and guard
band. This requires a separate capture of “raw tmds” data. The following series of commands set up the
capture and trigger conditions, etc and then initiate the capture of the raw tmds data.
p-scope> pcap vchk enable
// verifying the captured format timing.
pcap_vchk: precapture video check [enabled]
p-scope> pcap size 41.492
// set size of capture buffer to 41.492%.
Capture buffer size 743MB
