LTE Signaling
R&S
®
CMW-KM5xx/-KS5xx
16
User Manual 1173.9628.02 ─ 16
Fig. 2-5: Test setup for CA, MIMO nx2, 4 DUT antenna connectors
For CA without MIMO you could for example use only RF 1 COM (uplink, PCC down-
link and SCC downlink). Or you could use RF 1 COM (uplink and PCC downlink) and
RF 3 COM (SCC downlink).
2.2.1.5
Test Setup for Scenario IQ out - RF in
For the scenario "IQ out - RF in" the uplink RF signal is routed via an RF COM connec-
tor at the front panel. The downlink digital I/Q signal is routed via a DIG IQ OUT con-
nector at the rear panel. This connector is only available if an I/Q board is installed
(option R&S CMW-B510x/-B520x). Additional instruments can be inserted into the
downlink path to manipulate the downlink signal.
A typical use case is to insert an R&S SMU200A into the downlink path to superimpose
fading on the downlink signal. The following figure provides an overview of this setup.
In this example the R&S SMU200A is synchronized to a 10-MHz reference signal pro-
vided by the R&S
CMW. It is also possible to synchronize the R&S
CMW to the R&S
SMU200A.
The following figure shows a possible rear panel cabling using the first I/Q board (DIG
IQ 1 to 4).
General Description
深圳德标仪器
135-1095-0799