User`s manual

Arbitrary Waveform Description
Refer to Figure 10-1. An arbitrary waveform is equally divided into points
that are the actual voltage points of the waveform. The AFG stores these
points as a waveform segment in its segment memory. The waveform
segments are stored as Digital-to-Analog Converter (DAC) codes. The
codes set the output DAC to the voltage values of the waveform.
The segment sequence selects the waveform segment to be output for
waveform generation. The segment sequence is stored in the AFG’s
sequence memory.
For square, ramp, and triangle functions, the AFG calculates the waveform
segments and segment sequences, and stores them in memory. For the user
generated waveforms, the user transfers the waveform segments and
segment sequences to the AFG which stores them into memory. (See
“Generating Sinusoid Waveforms” on page 450 for sinusoid waveforms.)
Figure 10-1. Arbitrary Waveform
446 Block Diagram Description Chapter 10