Rohde & Schwarz R&S UPP, User Manual

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Instrument Functions
R&S
®
UPP
464 User Manual 1411.1055.32 ─ 10
Settling
Used to activate the settling measurement for the frequency/level monitoring routine in
the case of external sweeps and external level/edge triggering, and to select the "set-
tling" method.
Results of trigger signal measurements are valid only if the selected "settling "condition
is fulfilled.
The following applies to settling measurements, irrespective of the selected unit:
●
With external level sweeps and external level/edge triggering, the settling measure-
ment is based on the results of the trigger signal measurement in volts (analog) or
FS (digital).
●
With external frequency sweeps, the settling measurement is based on the results
of the trigger signal measurement in Hz.
Note: Averaging the results of trigger signal measurements would not provide conclu-
sive information and is therefore not implemented.
"Off" The frequency/level monitoring routine is performed without the set-
tling function. This setting offers the shortest possible response time
to a detected signal change. It is not sure, however, whether the nom-
inal trigger value (X value of the sweep display) is actually attained.
"Exponential" The settling function is switched on for the frequency/level monitoring
routine, and the exponential method is employed. Since several mea-
surements have to be performed, the response time to the detected
signal change becomes longer.
This setting is recommended for external level sweeps and external
level/edge triggering since most DUTs exhibit an exponential level
settling characteristic.
"Flat" The settling function is switched on for the frequency/level monitoring
routine, and the flat method is employed. Since several measure-
ments have to be performed, the response time to the detected signal
change becomes longer.
This setting is recommended for external frequency sweeps if the
actual trigger value (X value of the sweep display) is to be determined
very accurately. In the event of a frequency change, the DUT will usu-
ally yield a maximum of only one invalid intermediate frequency
value. Therefore it is sufficient to set the number of samples to a
value of "2", so that only two or three measurements of the trigger
signal are performed.
Remote command:
SENSe[1]:TRIGger:SETTling:MODE
on page 771
Samples
Designates the number of measured values to be covered by the settling algorithm, i.e.
it defines how many frequency or measured level values are to be used for settling.
Settling Methods