To Examine Symbol States And Error Summaries - Agilent Technologies 89410A Operator's Manual

Analyzing Digitally Demodulated Signals (Options AYA and AYH)

To examine symbol states and error summaries

This task shows you how to display the symbol table, which contains
demodulated bits and numeric error information. This task also shows you
how to couple the marker in the symbol table to the constellation diagram
so you can see the bits that correspond to a state. This task is a
continuation of the previous task.
1.
Select two display grids:
Press [ ], [
Display 2 grids
2.
Display the symbol table in the upper grid:
Press [ ], [
A Measurement Data
3.
Display a constellation diagram in the lower grid:
Press [ ], [
B Measurement Data
Press [ ], [
Data Format
4.
Turn on symbol dots on the constellation display:
Press [
more format setup
5.
Press [ ].
Auto Scale
6.
Couple the markers on the two grids:
Press [ ], [
Marker couple mkrs on
7.
Rotate the knob to move the marker from symbol to symbol in both the symbol
table (trace A) and the constellation diagram (trace B).
8.
Turn on averaging to observe averaged numeric error data:
Press [ ], [
Average average on
9.
Turn averaging off before continuing to other tasks.
Press [ ].
average off
Display online help for more information on these keys and topics.
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].
], [
symbol table/error summary
], [ ]
IQ measured time
].
polar IQ constell ation
], [ ]
symbol dots
].
].
]
.