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Instrument Functions
R&S
®
UPP
399
User Manual 1411.1055.32 ─ 10
IEC 60268 applies the measured intermodulation products to the double upper fre-
quency; IEC 60118 applies them to the single upper frequency only. The results
according to IEC 60268 are therefore approx. 6
dB better than the results according to
IEC 60118.
"d2 (IEC 268)"
Measurement of the 2nd-order intermodulation product relative to the
double
amplitude at the upper frequency (acc. to IEC 60268):
2
1
2
2
2
lg
20
f
f
f
U
U
dB
d
"d3 (IEC 268)"
Measurement of the 3rd-order intermodulation products referenced to
the
double
amplitude at the upper frequency (acc. to IEC 60268):
2
2
1
2
1
2
2
3
2
lg
20
f
f
f
f
f
U
U
U
dB
d
Figure 5-11: DFD-d3 measurement in accordance with IEC 60268
Distortion Measurements
Summary of Contents for R&S UPP
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Page 34: ...Contents R S UPP 18 User Manual 1411 1055 32 10 ...
Page 630: ...Instrument Functions R S UPP 614 User Manual 1411 1055 32 10 Format ...
Page 631: ...Instrument Functions R S UPP 615 User Manual 1411 1055 32 10 Format ...