Agilent Technologies E8267C PSG, E8247C PSG CW, E8257C PSG manual

Models: E8267C PSG E8247C PSG CW E8257C PSG

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Custom Real Time I/Q Baseband

Working with Differential Data Encoding

4.Press 0 > Enter.

This encodes the fourth symbol by adding a symbol table offset of 0. The symbol does not rotate through the state map when a data value of 11 is modulated.

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.

 

 

5.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.

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

editor.

Chapter 7

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Page 177
Image 177
Agilent Technologies E8267C PSG, E8247C PSG CW, E8257C PSG manual