User Guide

RIGOL Chapter 6 Sweep
DG4000 Series User’s Guide
6-4
If the center frequency is 550Hz, the frequency span range is ± 2× (550Hz–1μHz)
= ± 1.099999998kHz; if the center frequency is 155MHz, the frequency span range
is ± 2× (160MHz–155MHz) = ± 10MHz.
The generator will renewedly sweep from the specified “Start Frequency” after
“Center Frequency” or “Frequency Span” is changed.
Tip
In large-scale sweep, the amplitude characteristic of the output signal might
change.
Sweep Type
DG4000 provides three sweep types, including Linear, Log and Step, and the
default is Linear.
Linear Sweep
The output frequency of the instrument varies linearly in the way of “several Hertz
per second”. The variation is controlled by “Start Frequency”, “End Frequency” and
“Sweep Time”.
When Sweep is enabled, press SwpType to select “Linear”. A line is displayed on
the waveform on the screen, indicating that the output frequency changes in linear
mode.