Rohde & Schwarz SMBV100A, Operating Manual

Page: 778 / 911

Remote Control Commands
R&S
®
SMBV100A
763 Operating Manual 1176.8016.02 ─ 17
This parameter always applies to the currently set sweep spacing and correlates with
the step size as follows:
●
for linear sweeps and f
STARt
< f
STOP
freq_points = (f
SPAN
/ step_lin) + 1
with f
SPAN
= f
STOP
- f
STARt
To determine the step size, use the command SWE:STEP[:LIN] .
●
logarithmic sweeps and f
STARt
< f
STOP
freq_points = ((log f
STOP
- log f
STARt
) / log step_log) + 1
To determine the logarithmic step size, use the command SWE:STEP:LOG .
If you change the number of sweep points, the step size changes accordingly. The
sweep range remains the same.
Each sweep spacing mode has assigned the
POINts
setting separately. Thus, the
command refers always to the particular set mode, see
[:SOURce<hw>]:LFOutput:
SWEep[:FREQuency]:SPACing
.
Parameters:
<Points> integer
Range:
2...max
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:POIN 11
sets 11 sweep steps for linear sweep spacing. The sweep step
width (
STEP
) is automatically set to 2 kHz.
[:SOURce<hw>]:LFOutput:SWEep[:FREQuency]:RETRace <State>
Activates that the signal changes to the start frequency value while it is waiting for the
next trigger event.
You can enable this feature, when you are working with sawtooth shapes in sweep
mode "Single" or "External Single".
Parameters:
<State> 0 | 1 | OFF | ON
*RST:
0
Example: TRIG0:SWE:SOUR SING
LFO:SWE:MODE SWE
LFO:SWE:SHAP SAWT
LFO:SWE:RETR ON
activates retrace function, that menas the frequency changes to
the value at start frequency while waiting for the next trigger
event.
Manual operation: See " Retrace - LF Frequency Sweep " on page 268
SOURce Subsystem