Agilent Technologies 89410A Operator's Manual page 131

Analyzing Digitally Demodulated Signals (Options AYA and AYH)
Note
Note that for video demodulation (option AYH), you cannot display or change
the state definitions for DVB QAM. State definitions for DVB QAM are fixed as
defined in the European Telecommunication Standard (online help for the
[ ] softkey shows the state definitions as defined in this standard).
DVB QAM
State definitions are shown in a format that corresponds to the constellation diagram.
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