R&S SMB100A, Operating Manual

Page: 438 / 528

Remote Control Commands
R&S
®
SMB100A
423 Operating Manual 1407.0806.32 ─ 21
Manual operation: See "Shape - RF Frequency Sweep" on page 179
[:SOURce<hw>]:SWEep[:FREQuency]:SPACing <Spacing>
Selects the mode for the calculation of the frequency sweep intervals. The frequency
increases or decreases by this value at each step.
The keyword
[:FREQuency]
can be omitted. Then the command is SCPI-compliant.
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>]:SWEep[:
FREQuency]:STEP[:LINear]
on page 423).
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>]:SWEep[:FREQuency]:STEP:LOGarithmic
on page 424).
*RST:
LINear
Example: SWE:SPAC LIN
selects linear sweep spacing for a frequency sweep at the RF
output.
Manual operation: See "Spacing - Frequency Sweep" on page 179
[:SOURce<hw>]:SWEep[:FREQuency]:STEP[:LINear] <Linear>
Sets the step size for linear RF frequency sweep steps.
This parameter is related to the number of steps (
[:SOURce<hw>]:SWEep[:
FREQuency]:POINts
) within the sweep range as follows:
f
STARt
< f
STOP
freq_points = (f
SPAN
/ step_lin) + 1
If you change the step size, the number of steps changes accordingly. The sweep
range remains the same.
The keywords
[:FREQuency]
and
[:LINear]
can be omitted. The command is then
SCPI-compliant.
Parameters:
<Linear> float
Range:
full frequency range
Increment: see the data sheet: RF characteristics > Resolution
of setting
SOURce Subsystem