Chapter 3 79
3 Basic Digital Operation
This chapter provides information on the functions and features available for the E8267D PSG vector
signal generator with Option 601 or 602.
• “Custom Modulation” on page 79
• “Arbitrary (ARB) Waveform File Headers” on page 80
• “Using the Dual ARB Waveform Player” on page 91
• “Using Waveform Markers” on page 96
• “Triggering Waveforms” on page 111
• “Using Waveform Clipping” on page 117
• “Using Waveform Scaling” on page 125
• “Setting the Baseband Frequency Offset” on page 128
See also:
• “Custom Arb Waveform Generator” on page 159
• “Multitone Waveform Generator” on page 221
• “ Two–Tone Waveform Generator” on page 231
Custom Modulation
For creating custom modulation, the signal generator offers two modes of operation: the Arb
Waveform Generator mode and the Real Time I/Q Baseband mode. The Arb Waveform Generator
mode has built–in modulation formats such as NADC or GSM and pre–defined modulation types such
as BPSK and 16QAM that can be used to create a signal. The Real Time I/Q Baseband mode can be
used to create custom data formats using built–in PN sequences or custom–user files along with
various modulation types and different built–in filters such as Gaussian or Nyquist.
Both modes of operation are used to build complex, digitally modulated signals that simulate
communication standards with the flexibility to modify existing digital formats, define or create
digitally modulated signals, and add signal impairments.
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