![R&S CMW-KM5 Series User Manual Download Page 816](http://html1.mh-extra.com/html/rands/cmw-km5-series/cmw-km5-series_user-manual_3148802816.webp)
LTE SRS Measurement
R&S
®
CMW-KM5xx/-KS5xx
816
User Manual 1173.9628.02 ─ 16
5 LTE SRS Measurement
The "LTE SRS" measurement provides quick and flexible tests on LTE FDD and TDD
sounding reference signals. The tests cover the following UE transmitter properties:
●
Transmit OFF power, transmit ON power and power ramping between them
(Power Dynamics)
The SRS measurement requires option R&S CMW-KM500 for FDD signals and R&S
CMW-KM550 for TDD signals.
5.1 What's New in this Revision
This revision describes version 3.2.10 and later of the "LTE SRS Measurement" firm-
ware application. Compared to version 3.0.30 it provides the following new features:
●
Configurable frequency offset, see
Software Version
To check your R&S
CMW software version, open the "Setup" dialog and click "HW/SW
Equipment". The initial software version for each remote control command is quoted in
the reference description.
5.2 General Description
The LTE SRS measurement captures an uplink LTE Sounding Reference Signal (SRS)
and provides power dynamics measurement results. The signal to be measured must
not contain any additional components, e.g. a PUSCH or PUCCH.
Both FDD signals (option R&S CMW-KM500) and TDD signals (option R&S CMW-
KM550) can be measured.
The following sections describe how to perform and configure the measurement.
How to Measure an Uplink SRS Signal
.................................................................817
Parallel Signaling and Measurement
.................................................................... 817
Limit Settings and Conformance Requirements
....................................................818
........................................................................................... 819
5.2.1 Test Setup
The external RF signal source (mobile station, signal generator etc.) is connected to
one of the RF input connectors (RF COM) at the front panel of the R&S
CMW. No
additional cabling and no external trigger is needed.
What's New in this Revision
深圳德标仪器
135-1095-0799