SOURce2:SWEep SME
1038.6002.02 3.114 E-13
:SOURce2:SWEep[:FREQuency]:POINts Number
The command determines the number of steps in a sweep. Instead of this command, commands
:SOURce2:FREQuency:STEP:LINear and :SOURce2 :FREQuency:STEP:LOGarithmic
should be used, as :SOURce2:SWEep:FREQuency: POINts has been adapted to the
instrument characteristics in comparison to the SCPI command. The value of POINts depends on
SPAN and STEP according to the following formulas.
The following is true of linear sweeps : POINts = SPAN / STEP:LIN + 1
The following is true of logarithmic sweeps and STARt < STOP:
POINts = ((log STOP log STARt) / log STEP:LOG) + 1
Two independent POINts values are used for SPACing LOG and SPACing LIN. That is to say,
before POINts is changed, SPACing must be set correctly. A change of POINts causes an
adaption of STEP, but not of STARt, STOP and SPAN.
Example: :SOUR2:SWE:POIN 50
:SOURce2:SWEep[:FREQuency]:SPACing LINear | LOGarithmic
The command selects whether the steps have linear or logarithmic spacings.
Example: :SOUR2:SWE:SPAC LOG *RST value is LINear
:SOURce2:SWEep[:FREQuency]:STEP
The commands to set the step width with linear and logarithmic sweeps are under this node. The
settings of STEP:LIN and STEP:LOG are independent of each other.
:SOURce2:SWEep[:FREQuency]:STEP[:LINear] 0 to 500 kHz
The command sets the step width with the linear sweep. If STEP:LINear is changed, the value of
POINts valid for SPACing:LINear also changes according to the formula indicated under POINts.
A change of SPAN does not cause a change of STEP:LINear. Keyword [:LINear] can be omitted,
then the command conforms to SCPI regulation (see example)
Example: :SOUR2:SWE:STEP 10kHz *RST value is 1 kHz
:SOURce2:SWEep[:FREQuency]:STEP:LOGarithmic 0.01 to 50PCT
The command indicates the step width factor for logarithmic sweeps. The next frequency value of
a sweep is calculated according to (if STARt < STOP) :
new frequency = prior frequency + STEP:LOG x prior frequency
Thus STEP:LOG indicates the fraction of the prior frequency by which this is increased for the
next sweep step. Usually STEP:LOG is indicated in percent, with the suffix PCT having to be
used explicitly. If STEP:LOG is changed, the value of POINts valid for SPACing:LOGarithmic also
changes according to the formula stated unde
Example: :SOUR2:SWE:STEP:LOG 5PCT *RST value is 1 PCT
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