LMX SERIES™ OPERATION MANUAL
SECTION 8:
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2018 by Pacific Power Source, Inc. (PPS) • All Rights Reserved • No reproduction without written authorization from PPS.
LMX Series Power Source Operation Manual
Page 219 of 463
8.4.9
Harmonic Measurements Commands
Harmonic Measurements commands may be used to retrieve harmonic analysis data for voltage and
current. These measurements are returned using the SPECTrum commands.
Query Format
MEASure:SPECTrum:VOLTage#[:MAGnitude]?
Description
Returns harmonics spectrum for voltage on selected phase #. # = 1, 2
or 3. Returns a data set of 51, <nr2> type numbers, comma delimited.
The 1
st
element is the magnitude of the fundamental, for reference.
The 2
nd
element is the 2
nd
harmonic, etc. Values represent % of
fundamental (relative).
Only a single spectrum may be queried in a command.
Returned Data Format
<nr2>, <nr2>, <nr2>,……, <nr2>
Query Example
MEAS:SPECT:VOLT1?
100.000, 0.001, 0.3…., 0.000
Query Format
MEASure:SPECTrum:VLL#[:MAGnitude]?
Description
Returns harmonics spectrum for three phase Line to Line voltage on
selected phase #. # = 1, 2 or 3 (1 = Vab, 2 = Vbc, 3 = Vac). Returns a
VLL data set of 51, <nr2> type numbers, comma delimited. The 1
st
element is the magnitude of the fundamental, for reference. The 2
nd
element is the 2
nd
harmonic, etc. Values represent % of fundamental
(relative).
Only a single spectrum may be queried in a command.
Returned Data Format
<nr2>, <nr2>, <nr2>,……, <nr2>
Query Example
MEAS:SPECT:VLL1?
207.000, 0.001, 0.3…., 0.000
Query Format
MEASure:SPECTrum:VLL#:ABSolute?
Description
Returns absolute harmonics spectrum for three phase Line to Line
voltage on selected phase #. # = 1, 2 or 3 (1 = Vab, 2 = Vbc, 3 = Vac).
Returns a VLL data set of 51, <nr2> type numbers, comma delimited.
The 1
st
element is the magnitude of the fundamental, for reference.
The 2
nd
element is the 2
nd
harmonic, etc. Values represent % of
fundamental (relative).
Only a single spectrum may be queried in a command.
Returned Data Format
<nr2>, <nr2>, <nr2>,……, <nr2>
Query Example
MEAS:SPECT:VLL1:ABS?
207.000, 0.001, 0.3…., 0.000