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Chapter 7 Tutorial
Frequency Sweep
4
7
Frequency Sweep
Frequency sweeping is similar to FM but no modulating waveform is used.
Instead, the function generator sets the output frequency based on either
a linear or logarithmic function. In a linear sweep, the output frequency
changes in a constant “hertz per second” manner. In a logarithmic sweep,
the output frequency changes in a constant “octaves per second” or
“decades per second” manner. Logarithmic sweeps are useful for covering
wide frequency ranges where resolution at low frequencies could be lost
with a linear sweep.
You can generate a sweep using an internal trigger source or an external
hardware trigger source. When this source is selected, the function
generator outputs a continuous sweep at a rate determined by the
sweep time specified. When the external source is selected, the function
generator will accept a hardware trigger applied to the rear-panel
Trig In connector. The function generator initiates one sweep each time
Trig In receives a TTL pulse.
A sweep consists of a finite number of small frequency steps. Since each
step takes the same amount of time, longer sweep times result in smaller
steps and therefore better resolution. The number of discrete frequency
points in the sweep is automatically calculated by the function generator
and is based on the sweep time you select.
Frequency Sweep
For triggered sweeps, the trigger source can be an external signal,
the
key, or a command received from the remote interface. The
input for external trigger signals is the rear-panel Trig In connector.
Sync Output
Main Output
33210A users guide.book Page 329 Wednesday, July 16, 2008 11:16 AM
Summary of Contents for 33210A
Page 1: ...Keysight 33210A 10 MHz Function Arbitrary Waveform Generator User s Guide ...
Page 2: ......
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Page 14: ...12 Contents Contents 33210A users guide book Page 12 Wednesday July 16 2008 11 16 AM ...
Page 15: ...1 1 Quick Start 33210A users guide book Page 13 Wednesday July 16 2008 11 16 AM ...
Page 53: ...3 3 Features and Functions 33210A users guide book Page 51 Wednesday July 16 2008 11 16 AM ...
Page 273: ...5 5 Error Messages 33210A users guide book Page 271 Wednesday July 16 2008 11 16 AM ...
Page 301: ...6 6 Application Programs 33210A users guide book Page 299 Wednesday July 16 2008 11 16 AM ...
Page 311: ...7 7 Tutorial 33210A users guide book Page 309 Wednesday July 16 2008 11 16 AM ...
Page 335: ...8 8 Specifications 33210A users guide book Page 333 Wednesday July 16 2008 11 16 AM ...