GW Instek GSP-9300 - Harmonic Measurements

GSP-9300 User Manual
192
Harmonic Measurements
Description
The Harmonic function can be used to easily
measure the amplitude of the fundamental
frequency and its harmonic frequencies up to
the 10
th
harmonic. The function can also
measure the amplitude relative to the
fundamental (dBc) and the total harmonic
distortion (THD).
Measurement
items
Amplitude
Amplitude of each harmonic
(dBm).
dBc
Amplitude of each harmonic
relative to the fundamental.
THD
The square root of the sum of
the amplitude of each
harmonic frequency squared,
divided by the amplitude of
the fundamental frequency.
THD= V
2
2
+ V
3
2
….+ V
3
2
V
1
Example
Fundamental frequency
1
st
, 2
nd
, 3
rd
, 4
th,
…......10
th
Harmonic
dBc
Operation
1. Press
Measure
>
More[F7]>Harmonic[F2]>Harmonic[F1] and turn
Harmonic on.