Remote Control Commands
R&S
®
SMC100A
295
Operating Manual 1411.4060.32 ─ 04
[:SOURce<hw>]:SWEep[:FREQuency]:STEP:LOGarithmic
<Logarithmic>
The comman specifies the step width factor for logarithmic sweeps. The next frequency
value of a sweep is calculated (for
STARt < STOP
) using the following formula:
New frequency = Old fre
STEP:LOG
x Old frequency
STEP:LOG
therefore gives the fraction of the old frequency. The frequency is increased
by this fraction for the next sweep step. Usually
STEP:LOG
is given in percent, whereby
the suffix
PCT
must always be used.
The command is linked to the command
:SWEep[:FREQuency]:POINts
for
STARt <
STOP
as follows:
POINts = ((log STOP - log STARt) / log STEP:LOG) + 1
If
STEP:LOG
changes, the value of POINTs is adjusted. The
STARt
and
STOP
value is
retained.
Parameters:
<Logarithmic>
float
Range:
0.01 to 9999
Increment: 0.01 PCT
*RST:
1 PCT
Example:
FREQ:STAR 1GHz
sets the start frequency to 1 GHz.
FREQ:STOP 5GHz
sets the stop frequency to 5 GHz.
SWE:SPAC LOG
sets logarithmic sweep spacing.
SWE:STEP:LOG 10PCT
sets the step width for logarithmic sweep spacing to 10% of the
previous frequency in each instance (for a frequency sweep).
[:SOURce<hw>]:SWEep:POWer:DWELl
<Dwell>
The command sets the time taken for each level step of the sweep.
Tip:
It is recommended to switch off the "GUI Update" for optimum sweep performance
especially with short dwell times (
).
Parameters:
<Dwell>
float
Range:
1.0E-3 to 100
Increment: 100.0E-6
*RST:
15.0E-3
Default unit: s
Example:
SWE:POW:DWEL 12 ms
sets a dwell time of 12 ms for a level sweep at the RF output.
SOURce Subsystem
