Quantum Data 980 Application Manual page 21

980 HDMI Protocol Analyzer Application Guide – Source Compliance Test Automation
Test ID
7-36 – High Bitrate Audio
7-37 – One Bit Audio
7-38 – 3D Video Format Timing
7-39 – 4K x 2K Video Format Timing
7-40 – Extended Colorimetry Transmission
p-scope> pcap mode all
Pre-Capture Filter set to: No filtering
p-scope> pcap trig vsync 0
cap_trig: trigger basic type=0x1 position=0%
p-scope> pcap start
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
END: pcap_info info request type=112 complete
p-scope> pcap decode
END: decode request complete
Indexing the decode data...
p-scope> pcap index
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
pcap_vchk: precapture video check [enabled]
p-scope> pcap size 41.492
Capture buffer size 743MB
Page 21
% of full buffer (2GB)
41.492
4.48
4.322
4.322
4.322
// captures all data types (video, data islands)
// sets the capture trigger to vsync
// 980 initiates capture
// generating field timing information.
// decode the captured data.
// indexing the decoded data.
// verifying the captured format timing.
// set size of capture buffer to 41.492%.
Resulting/Required buffer size
743MB
88MB
77MB
77MB
77MB
Rev. A1
Feb 14, 2013