Rohde & Schwarz R&S UPP, Руководство пользователя

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Instrument Functions
R&S
®
UPP
386 User Manual 1411.1055.32 ─ 10
"Select di" The distortion of any given combination of harmonics d2 to d9 (root
from the square sum of the selected harmonics) is measured
relative
to the total RMS value.
 
TotalRMS
U U
dB U
d d
THD
...
log 20
2
3
2
2
 
 
The measured value can be displayed in % as well as in dB.
"All even di" The distortion of all even harmonics d2 to d8 (root from the quad-
ratic sum of the even harmonics) is measured relative to the total
RMS value.
 
TotalRMS
U U U U
dB U
d d d d
THD
2
8
2
6
2
4
2
2
log 20
  
 
The measured value can be displayed in % as well as in dB.
"All odd di" The distortion of all odd harmonics d3 to d9 (root from the quadratic
sum of the odd harmonics) is measured relative to the total RMS
value.
 
TotalRMS
U U U U
dB U
d d d d
THD
2
9
2
7
2
5
2
3
log 20
  
 
The measured value can be displayed in % as well as in dB.
"All di" The distortion of all harmonics d2 to d9 (root from the square sum of
all 8 harmonics) is measured relative to the total RMS.
 
TotalRMS
U U U U
dB U
d d d d
THD
2
9
2
8
2
3
2
2
...
log 20
   
 
The measured value can be displayed in % as well as in dB.
"dmin to dmax" The distortion of all harmonics dmin to dmax is measured relative to
the total RMS. In the bargraph display, harmonics are only shown up
to d9.
The measured value can be displayed in % as well as in dB.
) TotalRMS / U + ... + U log( * 20 = ] dB [ U
max d min d
THD
2 2
"Level Select
di" The distortion voltage of any given combination of harmonics d2 to d9
(root from the square sum of the selected harmonics) is measured.
 
...
2
3
2
2
  
d d THD
U U V U
The measured value is displayed in voltage units (volts or FS).
The desired harmonics are selected in the parameter fields below.
Distortion Measurements