Teledyne LeCroy QPHY-HDMI - Manual (Page 30)

Specific to “Test7-10: TMDS-Data Eye Diagram” Group
DUT TMDS C LOCK S TANDARD F REQUENCIES
Configure Source DUT to output one video format for each of the following TMDS Clock
frequencies: 27MHz (or 25MHz), 74.25MHz, 148.5MHz, 222.75MHz and, if not already covered,
the highest DUT-supported frequency. Use alternate frequency if the highest DUT-supported
frequency is not already covered.
DUT TMDS C LOCK A LTERNATE F REQUENCIES
If different than 0, this value will be used as the maximum DUT TMDS Clock frequency in
addition to the standard frequencies selected. The frequency must be entered in scientific
format, e.g. 340MHz as 340e6. The default value is 0.
R ECALLED W AVEFORM F ILE I NDEX (5 DIGITS )
Enter the 5 digits number corresponding to the index of the file you want to recall. Default is
00000.
T IMEBASE USED TO CREATE E YE D IAGRAM
Increase/decrease the number of points acquired to create Eye Diagram. 100us/div gives
enough samples to fulfill the 16 MS/Channel HDMI requirement.
QPHY-HDMI Limit Sets
The default installation of QPHY-HDMI contains only one limit set, called “HDMI_Default.” In
this script, limits are only used to convey Unit labels. The actual limits for each value tested are
encoded in or computed by the script and cannot be changed. The default limits used by QPHY-
HDMI are specified in version 1.4 of the High Definition Multimedia Interface Compliance Test
Specification (HDMI).
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