Rohde & Schwarz R&S UPP, User Manual

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Instrument Functions
R&S
®
UPP
460 User Manual 1411.1055.32 ─ 10
5.38.2 Settling Algorithms
The R&S UPP offers two different settling algorithms. As a feature common to both
algorithms, each current measured value is compared with up to five of the immedi-
ately preceding measured values and is accepted as valid only if the differences
between the current value and the preceding values are within specified tolerances.
In addition, an averaging function is available in order to reduce measured-value varia-
tions.
"Flat Settling" employs a tolerance mask with a completely flat characteristic (tolerance
"band"). The "capture range" of this mask is determined by fixed tolerance limits. In the
case of very small tolerance values, this algorithm yields a measurement result only
after the DUT settles almost completely.
"Exponential Settling" uses a tolerance mask with an exponential characteristic (toler-
ance "funnel") whose "capture range" enlarges toward the earlier measured values, i.e.
larger deviations are tolerated for the earlier values. This algorithm is suitable for level
and distortion measurements, where most DUTs likewise exhibit an exponential settling
characteristic.
5.38.3 Settling for Measurement Functions
Fnct Settling
Used to activate the settling measurement for results of measurement functions and to
select the settling method.
Settling Methods