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316 Chapter5
One-Button Measurement Functions
MEASURE (Spectrum Analysis Mode)
One-Button Measurement Functions
the measurement is in continuous mode, the measurement will continually measure the
amplitude of the fundamental and harmonics.
For averaged measurements, you may specify the number of sweeps over which the
amplitude of each harmonic is measured. This means that if the
Avg Number is set to 10,
ten sweeps will be taken and averaged for each harmonic to be measured. The total
harmonic distortion would then be calculated from these averaged amplitude readings.
Note that averaging applies only to the amplitude of the harmonic, and does not affect the
frequency at which the amplitude is measured.
Key Path:
MEASURE
Remote Command:
Measurement Results Available
Command n Results Returned
:CONFigure:HARMonics
:INITiate:HARMonics
N/A Not Applicable
:FETCh:HARMonics:AMPLitude:ALL?
:MEASure:HARMonics:AMPLitude:A
LL?
:READ:HARMonics:AMPLitude:ALL?
N/A Returns the amplitude values of the first ten
harmonics. The first value (for the
fundamental) is measured in dBm. The
remaining harmonics are measured in dBm
from the fundamental. If fewer than ten
harmonics are measured, zero is returned for
any harmonic not measured.
:FETCh:HARMonics:AMPLitude[n]?
:MEASure:HARMonics:AMPLitude[n]
?
:READ:HARMonics:AMPLitude[n]?
n=1 to 10
(n=1 for n
not
specified)
Returns the amplitude of the specified
harmonic number n, where n=1 returns the
amplitude of the fundamental in units of
dBm.
For example, n = 9 returns the amplitude of
the ninth harmonic measured in dBc from
the fundamental.
:FETCh:HARMonics[:DISTortion]?
:MEASure:HARMonics[:DISTortion]?
:READ:HARMonics[:DISTortion]?
N/A Returns the computed total harmonic
distortion as a percentage.
:FETCh:HARMonics:FREQuency:ALL
?
:MEASure:HARMonics:FREQuency:A
LL?
:READ:HARMonics:FREQuency:ALL?
N/A Returns the frequency values of the first ten
harmonics, in Hz. The first harmonic is the
fundamental. If fewer than ten harmonics
are measured, zero is returned for any
harmonic not measured.