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The Spectrum Application (RF Measurements)
R&S
®
FPL1000
117
User Manual 1178.3370.02 ─ 11
i)
Note down the power result for the burst, indicated by the "TD Pow RMS" result
in the marker table.
9. Measure the power during the deactivation phase of the burst by switching the trig-
ger slope to "Falling" ([TRIG] > "Trigger/ Gate Config").
The R&S
FPL1000 initiates triggering in response to the falling edge of the burst.
This shifts the burst to the left-hand side of the measurement diagram. The power
is measured in the deactivation phase.
Figure 6-19: Measurement of the signal-to-noise ratio of a GSM burst signal in zero span
10. Note down the power result for the measured noise, indicated by the "TD Pow
RMS" result in the marker table.
Subtract the measured noise power from the burst power to obtain the signal-to-
noise ratio of the burst signal.
6.2.2
Basic Evaluation Methods
Measurement results can be displayed and evaluated using various different methods,
also at the same time. Depending on the currently selected measurement, in particular
when using optional firmware applications, not all evaluation methods are available.
The evaluation methods described here are available for most measurements in the
Spectrum application.
Measurements and Results