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AFG Description
What is an Arbitrary Waveform?
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211
HP E1340A Block Diagram Description
HP E1340A Block Diagram Description
This chapter shows how the HP E1340A 12-Bit Arbitrary Function
Generator (AFG) operates. The sections are as follows:
The AFG is a register-based VXIbus B-size card that can output standard
waveforms, like
various arbitrary, and user defined arbitrary (i.e., USER function)
waveforms. The AFG can also perform frequency sweeping,
frequency-shift-keying, and output DC volts.
All waveforms that the AFG generates, except DC volts, are arbitrary
waveforms. The only difference is that the user supplies the data for the
arbitrary waveforms while the standard waveforms are already stored in an
EPROM.
Refer to Figure 9-1. 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 memory. The waveform segme
stored as Digital-to-Analog Converter (DAC) codes. The codes set the
output DAC to the voltage values of the waveform. Each waveform
segment consists of 4096 points.
AFG Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 211
What is an Arbitrary Waveform?. . . . . . . . . . . . . . . . . . . . . . Page 211
Generating Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 212
SINusoid
,
SQUare
Chapter 9
,
TRIangle
, and
RAMP
waveforms,
ts are
Chapter 9
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