
Chapter 3 135
Basic Digital Operation
Differential Encoding
NOTE At this point, the modulation has two bits per symbol. For the data values
00000000, 00000001, 00000010, 00000011, the symbol values are 00, 01, 10,
and 11 respectively.
Applying Custom Differential Encoding
Press Return > Differential Encoding Off On.
This applies the custom differential encoding to a user-defined modulation.
NOTE Notice that (UNSTORED) appears next to Differential State Map on the
signal generator’s display. Differential state maps are associated with the
user-defined modulation for which they were created.
In order to save a custom differential state map, you must store the
user-defined modulation for which it was designed. Otherwise the symbol table
offset data is purged when you press the
Confirm Exit From Table Without Saving
softkey when exiting from the I/Q or FSK table editor.
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