General Description
R&S
®
CMW-KM750/-KM751
29
User Manual 1173.9670.02 ─ 05
The central bar shows the power at the nominal carrier frequency (UL Frequency); the
bars ±1 correspond to the 1
st
adjacent channels (±1.6 MHz from the UL frequency) and
the 2
nd
adjacent channels (±3.2 MHz from the UL frequency). Either the "Current", "Aver-
age" or "Maximum" values can be displayed in the bar graph. The table below the bar
graph provides all these values.
For additional information refer to
chapter 3.6.8, "Common View Elements"
3.6.4 Detailed Views: Spectrum Emission Mask
The spectrum emission of the UE is measured in the "Preselected Slot". The results are
displayed in a diagram and as a table of statistical results.
Fig. 3-16: TD-SCDMA Multi Evaluation: Emission Mask
The measurement covers a symmetric, 9 MHz wide frequency range around the UE
center carrier frequency. The maximum display range is [carrier frequency – 4.5 MHz,
carrier fre 4.5 MHz]. According to 3GPP TS 34.122, a resolution filter of Gaus-
sian shape with a bandwidth of 30 kHz (for frequencies between 0.815 MHz and 2.385
MHz from the carrier) or 1 MHz (for frequencies between 2.9 MHz and 3.5 MHz) is used.
All measured spectrum emission values are relative to the UE output power measured
in a 1.28 MHz bandwidth (reference power).
The example shows the results measured with the 30 kHz filter bandwidth (lower blue
curve, including the center) and the 1 MHz bandwidth (upper curves at offset frequencies
Measurement Results
