Rohde & Schwarz R&S UPP, Руководство пользователя

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Instrument Functions
R&S
®
UPP
365 User Manual 1411.1055.32 ─ 10
"Auto" Where possible, the RMS measurement is performed over entire AC
periods; with medium or high frequencies, the measurement time is
increased so that the maximum algorithmic error does not exceed
0.05 %.
With very weak, low-frequency or pure DC signals, the maximum
measurement time is limited to 200
ms (corresponding to 2 periods at
10 Hz).
Recommended for single-tone measurements using an unknown
external signal source if maximum measurement accuracy is desired.
Note: For infrasound measurements (below 10 Hz), can only be mea-
sured using a fixed measurement time (Value or Gen Track).
"Value " The RMS measurement is performed over a preset time which must
be entered in the parameter field below.
To prevent errors due to termination of measurements, the selected
measurement time should be an integer multiple of the period. If the
frequency of the signal to be measured is unknown or not constant,
the selected measurement time should be as long as possible in
order to minimize such errors.
Recommended for
●
AC measurements of a known external signal source
●
measurements of severely noise-corrupted or distorted signals of
unknown frequency
●
measurements of noise signals or multi-tone signals
Level Measurements