Rohde & Schwarz R&S CMW-KM300, Руководство пользователя, Страница: 219 / 388

NB-IoT Multi-Evaluation Measurement
R&S
®
CMW-KM300/-KS300
219 User Manual 1178.5689.02 ─ 06
Figure 3-11: ACLR view
The diagram shows the mean power in the assigned NB-IoT channel as central bar.
The other bars indicate the mean powers in the adjacent GSM channels and in the
adjacent UTRA channels. All values are absolute power levels in dBm.
The displayed absolute limit lines are calculated from the configured relative ACLR lim-
its. They are only displayed for adjacent channels with a power level above the config-
ured absolute limit.
The ACLR values resulting from the measured powers are displayed in the table below
the diagram. According to 3GPP TS 36.521, the ACLR is defined as the mean power in
the assigned NB-IoT channel divided by the mean power in an adjacent channel. The
mean power in the assigned NB-IoT channel is also displayed.
The filters used for the ACLR measurement are compliant with 3GPP TS 36.521.
According to this specification, ACLR tests must be carried out at maximum output
power of the UE.
For the parameters at the bottom, see Chapter 3.3.2.13, "Common View Elements" ,
on page 225.
For query of the ACLR results via remote control, see Chapter 3.5.3.14, "ACLR Spec-
trum Results" , on page 304.
3.3.2.7 View I/Q Constellation
The constellation diagram shows the modulation symbols in the measured slot as
points in the I/Q plane.
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