Agilent Technologies ESA-E Series Programmer's Manual page 227

Language Reference
MEASure Subsyste m
Range : -180 dBm to 70 dBm
Default Unit: dBm (fundamental); dBc (all others)
Remarks : The first value (for the fundamental) is measured in
dBm ; the remaining harmonics are measured in dBc . If
fewer than ten harmonics are measured, zero i s
returned for any harmonic not measured . The
harmonic amplitude precision for SCPI and the displa y
is two decimal places.
Front Panel
Access:
MEASURE, Harmonic Dis t
Return Harmonic N Amplitude
:MEASure :HARMonics :AMPLitude[n] ?
Returns the amplitude of harmonic number n, measured in dBc fro m
the fundamental, or in dBm if n= 1 .
Range : -180 dBm to 70 dBm
Default Unit: dBc (from fundamental) ; dBm (n=1)
Remarks : The harmonic amplitude precision for SCPI and th e
display is two decimal places .
Front Pane l
Access:
MEASURE, Harmonic Dis t
Return % Total Harmonic Distortion
:MEASure :HARMonics[ :DISTortion] ?
Returns the computed total harmonic distortion as a percentage .
Range : 0 to float64
Default Unit: %
Remarks : The total harmonic distortion precision for SCPI an d
the display is three significant digits .
Front Pane l
Access :
MEASURE, Harmonic Dist
Return Harmonic Frequency Lis t
:MEASure :HARMonics :FREQuency :ALL ?
Returns a comma-separated list of the frequencies of the ten harmonics ,
measured in Hz .
Range: 0 Hz to the maximum frequency range of the analyzer.
Chapter 5 5-67