Agilent Technologies ESA-E Series User And Programming Manual page 131

Table 7-2 Results Returned from the EVM Measurement
n
0
not specified
or n=1
Chapter 7
Results Returned
Returns processed raw, unprocessed I/Q trace data, as a data array of
comma-separated trace points, 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.
Returns 24 comma separated floating point numbers in the following
order:
1. has units of percent. The calculation is based on the
EVM (rms) Avg
composite of the phase error and magnitude error, between the
measured signal and the ideal signal. If averaging is on, this is
the average of the individual rms measurements.
2. has units of percent. The calculation is based on
EVM (rms) Max
the composite of the phase error and magnitude error, between
the measured signal and the ideal signal. This is the maximum of
the individual rms measurements.
3. has units of percent. The calculation is based on
EVM (peak) Avg
the composite of the phase error and magnitude error, between
the measured signal and the ideal signal. If averaging is on, this
is the average of the individual peak measurements.
4.
Symbol position of the EVM (peak) Avg error
the symbol position where the last averaged peak EVM error is
detected.
5. has units of percent. The calculation is based on
EVM (peak) Max
the composite of the phase error and magnitude error, between
the measured signal and the ideal signal. If averaging is on, this
is the maximum of the individual peak measurements.
6.
Symbol position of the EVM (peak) Max error
the symbol position where the maximum peak EVM error is
detected.
7.
Magnitude Error rms Avg
between the measured (compensated) magnitude and the ideal
magnitude. If averaging is on, this is the average of the individual
rms measurements.
8.
Magnitude Error rms Max
between the measured (compensated) magnitude and the ideal
magnitude. This is the maximum of the individual rms
measurements.
9.
Magnitude Error (peak) Average
error between the measured (compensated) magnitude and the
ideal magnitude. If averaging is on, this is the average of the
individual peak measurements.
Programming Language Reference
MEASure Group of Commands
– an integer number of
– an integer number of
(with units of percent) is the rms error
(with units of percent) is the rms error
(with units of percent) is the peak
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