R&S
®
CMW 500 WCDMA Applications
WCDMA TX Measurements
Operating Manual 1202.3986.32 – 03 305
WCDMA Multi Evaluation: Overview
The "Overview" dialog contains two types of results:
Error Vector Magnitude, Magnitude Error, and Phase Error
The three upper diagrams cover a time interval of up to 120 slots. The "Current" traces
contain one measurement result per slot, which is calculated as the average of the
measured quantity of all samples in the slot, excluding a 25 µs guard period at the
beginning and at the end. The "Average" and "MinMax" traces are calculated according
to the general rules for statistical results.
ACLR
The ACLR results are measured in the "Preappointed Slot". The central bar shows the
power at the nominal carrier frequency (UL Frequency); the bars ±1 correspond to the
1
st
adjacent channels (±5 MHz from the UL frequency) and the 2
nd
adjacent channels
(±10 MHz from the UL frequency).
The method of measurements ensures that the results correspond to the ACLR
specified in standard 3GPP TS 34.121 where a WCDMA channel filter is used.
According to the standard, ACLR tests must be carried out at maximum output power
of the UE.
Emission Mask
The spectrum emission of the UE is measured in the "Preappointed Slot". The
measurement covers a symmetric, 25 MHz wide frequency range around the UE
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