Quantum Data 881 - Manual (Page 525)

881/882 Video Test Generator User Guide (Rev A.22) 507
8. Initiate the actions necessary on the DisplayPort devices to ensure that the aux channel
transactions you wish to monitor are occurring. This might be running a link layer
compliance test, initiating link training through the command line, or unplugging and
plugging in the sink DisplayPort cable to initiate a hot plug to monitor link training or to
run HDCP.
The ACA begins the trace and displays the results in the main window, as shown below:
T
Under the Source column there are two types of entries: 1) Native refers to aux channel
transactions for DPCD reads and writes for link layer operations and HDCP
transactions; 2)
I2C refers to EDID reads.
You can view details of the transactions by highlighting on a record and then viewing
the Details and Data sections below. The Details section parses out the fields into
human readable text.
The trace above shows the timestamps in Cumulative mode which shows the time
stamps from the beginning of the trace. To view the time differences between a
reference record and any other record you can use the Delta time feature by clicking on
the activation button on the upper right.