Agilent Technologies E8247C PSG CW - Manual (Page 167)

Chapter 7 157
Custom Real Time I/Q Baseband
Working with Burst Shapes
7. Enter a file name (for example, NEWBURST ) using the alpha keys and the numeric keypad.
8. Press
Enter
.
The contents of the current Rise Shape and Fall Shape editors are stored to the Catalog of
SHAPE Files . This burst shape can now be used to customize a modulation or as a basis for a new
burst shape design.
To Select and Recall a User-Defined Burst Shape Curve from the Memory Catalog
Once a user-defined burst shape file is stored in the Memory Catalog, it can be recalled for use with
real-time I/Q baseband generated digital modulation.
This example requires a user-defined burst shape file stored in memory. If you have not created and stored a
user-defined burst shape file, complete the steps in the previous sections.
1. Press
Preset
.
2. Press
Mode
>
Custom
>
Real Time I/Q Baseband
>
Burst Shape
>
Burst Shape Type
>
User File
.
3. Highlight the desired burst shape file (for example, NEWBURST ).
4. Press
Select File
.
The selected burst shape file is now applied to the current real-time I/Q baseband digital modulation
state.
5. Press
Return
>
Custom Off On
.
This generates the custom modulation with user-defined burst shape created in the previous steps.
During waveform generation, the
CUSTOM and I/Q annunciators activate. The waveform is now
modulating the RF carrier.
6. Press
RF On/Off
.
The current real-time I/Q baseband digital modulation format with user-defined burst shape should be
available at the signal generator’s RF OUTPUT connector.