Agilent Technologies Signal Analyzer N9030a User Manual
Page 118
3 Programming the Analyzer
Remote Measurement Functions
Option
Description
MEAN
(
Returns a single value that is the arithmetic mean of the data point values (in dB/ dBm) for the
specified region(s) of trace data. For I/Q trace data, the mean of the magnitudes of the I/Q pairs is
returned. See the following equations.
If the original trace data is in dB, this function returns the arithmetic mean of
those log values, not log of the mean power which is a more useful value. The
mean of the log is the better measurement technique when measuring CW
signals in the presence of noise. The mean of the power, expressed in dB, is
useful in power measurements such as Channel Power. To achieve the mean of
the power, use the RMS option.
Equation 1: Mean Value of Data Points for Specified Region(s)
where Xi is a data point value, and n is the number of data points in the specified region(s).
Equation 2: Mean Value of I/Q Data Pairs for Specified Region(s)
where |Xi| is the magnitude of an I/Q pair, and n is the number of I/Q pairs in the specified region(s).
DMEan
(
Returns a single value that is the mean power (in dB/ dBm) of the data point values for the specified
region(s) of trace data. See the following equation:
Equation 3: DMEan Value of Data Points for Specified Region(s)
RMS
(
Returns a single value that is the average power on a root-mean-squared voltage scale (arithmetic
rms) of the data point values for the specified region(s) of trace data. See the following equation.
For I/Q trace data, the rms of the magnitudes of the I/Q pairs is returned. See
the following equation.
This function is very useful for I/Q trace data. However, if the original trace data
is in dB, this function returns the rms of the log values which is not usually
needed.
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Remote Language Compatibility Measurement Application Reference