User`s guide

332 Agilent X-Series Signal Generators User’s Guide
Custom Digital Modulation (Option 431)
Using Customized Burst Shape Curves
The signal generator firmware computes optimum burst shape based on the settings you’ve chosen for
modulation. You can further optimize burst shape by lining up the data portion with the modulation.
For example, if you’re designing a new modulation scheme, do the following:
• Adjust the modulation and filtering to set the spectrum you want.
• Adjust the burst rise and fall delay and rise and fall time for the timeslots.
If you find that the error vector magnitude (EVM) or adjacent channel power (ACP) increases when
you turn bursting on, you can adjust the burst shape to assist with troubleshooting.