Rohde & Schwarz CMW-KE100, User Manual

Page: 454 / 938

CDMA2000 Signaling
R&S
®
CMW-KM8xx/-KS8xx
454 User Manual 1173.9511.02 ─ 12
Example: Assume an instrument with two Signaling Unit Universal (SUU), one Signal-
ing Unit Wideband (SUW), four TX paths and four RX paths.
This instrument allows you to run for example:
●
two CDMA2000 signaling instances plus one instance of an SUW signaling appli-
cation (e.g. LTE) or
●
one CDMA2000 signaling instance plus one instance of an SUU signaling applica-
tion (e.g. GSM) and one instance of an SUW signaling application.
The CDMA2000 and GSM signaling applications both use the SUU. Signaling instance
1 uses SUU1, while instance 2 uses SUU2. An SUU can only be used by one instance
at a time. You can run for example CDMA2000 signaling instance 2 and GSM signaling
instance 1 in parallel, but not instance 1 of both applications. Exception is hybrid mode,
for details refer to
chapter 4.2.5, "Hybrid Mode" , on page 460.
● Test Setup for Standard Cell Scenario ..................................................................454
● Test Setup for Hybrid Mode Scenario ...................................................................454
● Test Setup for External Fading Scenarios ............................................................ 455
● Test Setup for Internal Fading Scenarios ..............................................................456
4.2.1.1 Test Setup for Standard Cell Scenario
The device under test (DUT) can be connected to one of the bidirectional RF connec-
tors RF 1 COM or RF 2 COM at the front panel of the R&S
CMW. No additional cabling
and no external trigger is needed. The input level ranges of all RF COM connectors are
identical.
The bidirectional RF connection between the tester and the DUT carries both the for-
ward and the reverse signal:
●
The R&S CMW transmits the forward (base station) signal to which the DUT can
synchronize in order to perform registration and establish the connection. The for-
ward signal is used to transfer signaling messages and user data to the DUT.
●
The DUT transmits a reverse signal that the R&S CMW can receive and decode in
order to set up a connection and perform various measurements.
See also: "RF Connectors" in the R&S CMW user manual, chapter "Getting Started"
4.2.1.2 Test Setup for Hybrid Mode Scenario
A test setup for a connection with CDMA2000 1xRTT and CDMA2000 1xEV-DO
involves two forward and two reverse signals. The two signals must be transmitted via
different RF converters.
General Description
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