Rohde & Schwarz SMF-B1, Operating Manual

Page: 575 / 653

Remote Control Commands
R&S
®
SMF100A
560 Operating Manual 1167.2319.02 ─ 12
[:SOURce<hw>]:SWEep[:FREQuency]:POINts <Points>
Determines the number of steps for the RF frequency sweep within the sweep range.
This parameter always applies to the currently set sweep spacing and correlates with
the step size as follows:
●
for linear sweeps
freq_points = (f
SPAN
/ step_lin) + 1
To determine the step size, use the command SWE:STEP[:LIN] .
●
logarithmic sweeps and f
STARt
< f
STOP
freqq_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.
Note: The number of frequency sweep points displayed in the dialog deviates approxi-
mately by 1 from the frequency sweep points set with this remote control command.
It is up to the different clculation methods:
●
the remote control command determines the number of steps.
●
in the dialog, the instrument displays the number of transitions according to:
Count = ( f
STOP
- f
STARt
) / step_log
Since Count is an integer, the result may be rounded.
Parameters:
<Points> integer
Range:
2..max
Example: FREQ:STAR
sets the start frequency to 100 MHz.
FREQ:STOP
sets the stop frequency to 500 MHz.
SWE:SPAC LIN
sets linear sweep spacing.
SWE:POIN 401
sets 401 sweep steps for linear sweep spacing. The sweep step
width (
STEP
) is automatically set to 1 MHz.
Manual operation: See " Count - RF Frequency Sweep " on page 167
[:SOURce<hw>]: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
SOURce Subsystem