Rohde & Schwarz R&S UPP, Руководство пользователя

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Instrument Functions
R&S
®
UPP
400 User Manual 1411.1055.32 ─ 10
"d2 (IEC 118)" Measurement of the 2nd-order intermodulation product referenced to
the
single amplitude at the upper frequency (acc. to IEC 60118):
 
 
 
2
1 2
2
lg 20
f
f f
U
U
dB d

 
Figure 5-12: DFD-d2 measurement in accordance with IEC 60118
"d3 (IEC 118)" Measurement of the lower 3rd-order intermodulation product refer-
enced to the single amplitude at the upper frequency (acc. to IEC
60118):
 
 
 
2
2 1 2
3
lg 20
f
f f
U
U
dB d

 
Remote command:
SENSe[1]:FUNCtion:MMODe
on page 753
5.24 Polarity Measurement
Polarity measurement is used to test whether a DUT (such as a cable) forwards an
applied signal with the identical or reversed polarity.
To determine the polarity, a peak measurement is performed for a measurement time
of 20 ms and the highest positive peak is compared with the highest negative peak.
Polarity Measurement