Log sweep, Log sweep -5 – RIGOL DG4000 Series User Manual
Page 139
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
P
F
=
. P and T could be expressed
by the above-mentioned parameters:
sweep
start
stop
T
F
F
P
/
)
/
lg(
10
=