Keysight M8121A User Manual page 16

1 Introduction
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DNRZ Best signal performance in 1st Nyquist region
NRZ For time domain applications, less ripple at 2 f
DNRZ
Doublet More output power and flatter frequency response in 2nd Nyquist region
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Keysight M8121A Arbitrary Waveform Generator User Guide
, more distortions than