Remote Control Commands
R&S
®
SMC100A
307Operating Manual 1411.4060.32 ─ 09
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:STEP:LOGarithmic
<Logarithmic>
Sets the logarithmically determined sweep step size for the LF frequency sweep. It is
expressed in percent and you must enter the value and the unit PCT with the com-
mand.
The frequency is increased by a logarithmically calculated fraction of the current fre-
quency according to:
step_log
step+1
= f
step
+ step_log
step
x f
step
f
step+1
= f
step
+ step_log
step+1
with f
STARt
< f
STOP
and step = the current number of the sweep steps
This parameter correlates with the number of steps LFO:SWE[:FREQ]:POIN within the
sweep range as follows:
freq_points = ((log f
STOP
- log f
STARt
) / log step_log) + 1
If you change the step size, the number of steps changes accordingly. The sweep
range remains the same.
Parameters:
<Logarithmic> float
Range: 0.01 to 100
Increment: 0.01
*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.
Manual operation: See " Step Lin/Log - LF Sweep " on page 185
[:SOURce]:LFOutput:VOLTage <Voltage>
Sets the voltage of the LF output signal.
Parameters:
<Voltage> float
Range: see the data sheet: Internal modulation generator >
Output voltage range
Increment: see the data sheet: resolution of output voltage set-
ting
*RST: 1
SOURce Subsystem
To Next Page
Loading...
