R&S FSH Digital Modulation Analyzer
Measurements on GSM Signals
Operating Manual 1173.6275.12 - 30 252
9.3 Measurements on GSM Signals
Equipped with the software application R&S FSH-K10, you can perform measurements
on downlink GSM signals in accordance to the 3GPP standard with your R&S FSH.
► Press the MODE key
► Press the "Dig Mod Analyzer" softkey.
► Select the "GSM / EDGE BTS" menu item.
The R&S FSH starts the signal analysis.
After you have started the measurement, the R&S FSH starts recording the signal you
have applied. It records an amount of data that makes sure that at eight GSM time
slots are captured. The signal analysis itself contains exactly eight time slots.
The R&S FSH performs various general measurements based on the complete frame
as well as measurements based on an individual slot. It then shows the results in
tabular form in the "Result Summary" display or graphically in various diagrams.
To get highest measurement accuracy, it is necessary to synchronize the reference
frequency of the R&S FSH with the base station via the EXT REF IN input or the
external GPS frequency reference.
The GSM option provides several result displays to display the measurement results.
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