User Guide

Chapter 6 Sweep RIGOL
DG4000 Series User’s Guide
6-5
Figure 6-1 Linear Sweep
Log Sweep
The output frequency of the instrument varies in a logarithmic fashion, that is, the
output frequency changes in the way of “octave per second” or “decade per
second”. The change is controlled by “Start Frequency”, “End Frequency” and
“Sweep Time”.
When Log Sweep is enabled, users could set the following parameters:
Start Frequency
start
F
, End Frequency
stop
F
and Sweep Time
sweep
T
The function prototype of Log Sweep is
T
current
PF 
. P and T could be expressed
by the above-mentioned parameters:
sweepstartstop
TFF
P
/)/lg(
10