Remote Control Commands
R&S
®
SMC100A
269
Operating Manual 1411.4060.32 ─ 04
If
STEP:LIN
changes, the value of
POINTs
is adjusted. The
STARt
and
STOP
value is
retained.
Parameters:
<Linear>
float
Range:
0 to STOP-STARt
Increment: 0.1 Hz
Example:
LFO:FREQ:STAR
sets the start frequency to 2 kHz.
LFO:FREQ:STOP
sets the stop frequency to 20 kHz.
LFO:SWE:SPAC LIN
sets linear sweep spacing.
LFO:SWE:STEP 2 kHz
sets the sweep step width to 2 kHz. The number of sweep steps
for linear sweep spacing (
POINts
) is automatically set to 11.
[:SOURce]:LFOutput:SWEep[:FREQuency]:STEP:LOGarithmic
<Logarithmic>
The command 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
:LFOutput:SWEep[:FREQuency]:POINts
as follows:
●
for logarithmic sweeps and
STARt < STOP:
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:
0.01PCT to 100PCT
Increment: 0.01PCT
*RST:
1
Example:
LFO:FREQ:STAR
sets the start frequency to 1 kHz.
LFO:FREQ:STOP
sets the stop frequency to 100 kHz.
LFO:SWE:SPAC LOG
sets logarithmic sweep spacing.
LFO:SWE:STEP:LOG 10PCT
sets the step width for logarithmic sweep spacing to 10% of the
previous frequency in each instance.
SOURce Subsystem
