3 Spectrum Analyzer Mode
3.6 Power Stat CCDF Measurement
Programming the Instrument.
The following measurement commands and queries are used to configure the
measurement:
:INITiate:PSTatistic
Initiates a trigger cycle for the PST measurement, but
does not return any data. You must then use
:FETC:PST[n]? to retrieve data
Does not change any measurement settings
:CONFigure?
Returns the long form name of current measurement,
in this case, PSTatistic
:CONFigure:PSTatistic
Selects PST measurement with Meas Setup settings
in preset state – same as "Meas Preset" on page
1209
:CONFigure:PSTatistic:NDEFault
Selects PST measurement without affecting settings
The following queries are used to retrieve the results:
:FETCh:PSTatistic?
Retrieves the data specified by n
:MEASure:PSTatistic
[n]?
Switches to PST measurement, restores default values, starts the
measurement, then retrieves the data specified by n
:READ:PSTatistic[n]?
Starts the measurement, then retrieves the data specified by n
Measurement Results for Power Stat CCDF
The following table describes the results returned by the :FETCh, :MEASure, and
:READ queries listed above, according to the index value n.
n Results Returned
0 Returns unprocessed I/Q trace data, as a series of trace point values, in volts. The I values are listed first in
each pair, using the 0 through even-indexed values. The Q values are the odd-indexed values
1, or not
specified
Returns 11 scalar results:
# Item Unit, if
any
1 Average input power dBm
2 Probability at the average input power level %
3 Power level that has 10% of the power
4 Power level that has 1% of the power
5 Power level that has 0.1% of the power
6 Power level that has 0.01% of the power
7 Power level that has 0.001% of the power
1132 Spectrum Analyzer Mode User's &Programmer's Reference
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