R&S SMB100A, Operating Manual

Page: 371 / 528

Remote Control Commands
R&S
®
SMB100A
356 Operating Manual 1407.0806.32 ─ 21
Parameters:
<Spacing> LINear | LOGarithmic
LINear
With the linear sweep, the step width is a fixed frequency value
which is added to the current frequency. The step width for lin-
ear sweep is entered in Hz (see
[:SOURce<hw>]:LFOutput:
SWEep[:FREQuency]:STEP[:LINear]
on page 356).
LOGarithmic
With the logarithmic sweep, the step width is a constant fraction
of the current frequency. This fraction is added to the current fre-
quency. The logarithmic step width is entered in % (see
[:
SOURce<hw>]:LFOutput:SWEep[:FREQuency]:STEP:
LOGarithmic
on page 357).
*RST: LINear
Example: LFO:SWE:SPAC LIN
selects linear sweep spacing.
Manual operation: See "Spacing" on page 224
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:STEP[:LINear] <Linear>
Sets the step size for linear LF frequency sweep steps.
This parameter correlates with the number of steps
[:SOURce<hw>]:LFOutput:
SWEep[:FREQuency]:POINts
within the sweep range as follows:
f
STARt
< f
STOP
freq_points = ((f
STARt
- f
STOP
) / step_lin) + 1
If you change the step size, the number of steps changes accordingly. The sweep
range remains the same.
Parameters:
<Linear> float
Range:
full frequency range
Increment: see the data sheet: Modulation sources > Resolu-
tion of frequency setting
*RST: 1000
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.
Manual operation: See "Step Lin/Log - LF Sweep" on page 225
SOURce Subsystem