3GPP Base Station Measurements (Option K72) R&S FSL
1300.2519.12 4.272 E-11
The code domain power measurements are performed as specified by the 3GPP standards. A
s
ignal section of approx. 20 ms is recorded for analysis and then searched through to find the start
of a 3GPP FDD frame. If a frame start is found in the signal, the code domain power analysis is
performed for a complete frame starting from slot 0. The different result displays are calculated from
the recorded IQ data set. Therefore it is not necessary to start a new measurement in order to
change the result display. Common settings for these measurements are performed via the settings
menu (MENU key). For details refer to "Softkeys of the settings menu (3G FDD BTS mode)" on
p
age 4.275.
The measurement settings are listed below the title bar:
Parameter in example Description
CF 3.0 GHz center frequency
Result Summary Code Domain Result Summary result display
Att 0 dB attenuation
Ref –20.0 dBm reference level
Channel 0.256 channel number and spreading code
CPICH Slot 0 common pilot channel slot number
Chan Slot 0 channel slot number
• RF measurements
– Signal Channel Power (see Power softkey)
– Adjacent–Channel Power (see ACP softkey)
– Spectrum Emission Mask (see Spectrum Emission Mask softkey)
All these measurements are accessed via the MEAS key (measurement menu). Some parameters are
set automatically according to the 3GPP standard. A list of these parameters is given with each
measurement type. A set of parameters is passed on from the 3GPP Base Station Measurements
option to the base unit and vice versa in order to provide a quick swap (see the following table).
Transferred parameters
center frequency
reference level
attenuation
reference level offset
center frequency step size
trigger source
trigger offset
For a detailed description refer also to chapter "Advanced Measurement Examples".
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