Remote Control Commands
R&S
®
SMBV100A
698Operating Manual 1407.6062.32 ─ 08
[:SOURce<hw>]:SWEep[:FREQuency]:STEP:LOGarithmic <Logarithmic>
The comman specifies the step width factor for logarithmic sweeps. The next frequency
value of a sweep is calculated (for STARt < STOP) using the following formula:
New frequency = Old frequency + STEP:LOG x Old frequency
STEP:LOG therefore gives the fraction of the old frequency. The frequency is increased
by this fraction for the next sweep step. Usually STEP:LOG is given in percent, whereby
the suffix PCT must always be used.
The command is linked to the command :SWEep[:FREQuency]:POINts for STARt <
STOP as follows:
POINts = ((log STOP - log STARt) / log STEP:LOG) + 1
If STEP:LOG changes, the value of POINTs is adjusted. The STARt and STOP value is
retained.
Parameters:
<Logarithmic> float
Range: 0.01 to 9999
Increment: 0.01 PCT
*RST: 1 PCT
Example:
FREQ:STAR 1GHz
sets the start frequency to 1 GHz.
FREQ:STOP 5GHz
sets the stop frequency to 5 GHz.
SWE:SPAC LOG
sets logarithmic sweep spacing.
SWE:STEP:LOG 10PCT
sets the step width for logarithmic sweep spacing to 10% of the
previous frequency in each instance (for a frequency sweep).
[:SOURce<hw>]:SWEep:POWer:DATTenuator:STATe <Dattstate>
Activates digital attenuation during RF power sweep.
Parameters:
<Dattstate> 0 | 1 | OFF | ON
*RST: 0
Example:
SWE:POW:DATT:STAT ON
switches on digital attenuation.
[:SOURce<hw>]:SWEep:POWer:DWELl <Dwell>
The command sets the time taken for each level step of the sweep.
Tip: It is recommended to switch off the "GUI Update" for optimum sweep performance
especially with short dwell times (SYSTem:DISPlay:UPDate OFF).
SOURce Subsystem
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