User`s guide

Chapter 3 109
Basic Digital Operation
Understanding Waveform Clipping
Figure 3-21 Reduction of Peak-to-Average Power
FIR Filtering Options
With CDMA personalities (not Dual Arb), the ESG signal generator allows you to choose
whether clipping occurs prior to, or after, FIR filtering. Because clipped waveforms have
abrupt discontinuities which can generate noise, you can select pre-FIR filter clipping. The
FIR filter smooths any discontinuities in the clipped waveform and prevents noise. If desired,
however, you can also select post-FIR filter clipping.