General Description
R&S
®
CMW-KM750/-KM751
10
User Manual 1173.9670.02 ─ 05
3 General Description
The "TD-SCDMA measurement" firmware application (option R&S CMW-KM750) pro-
vides quick and flexible TX tests on TD-SCDMA uplink signals and an RX test (Bit Error
Rate and Block Error Ratio).
Option R&S CMW-KM750 allows to measure QPSK modulated signals only. To measure
16-QAM modulated signals, option R&S CMW-KM751 is required additionally.
The tests cover the following UE transmitter properties:
●
UE output power over a wide range of slots
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Modulation accuracy
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Spectrum emissions
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Code Domain Power (CDP) and Code Domain Error (CDE)
Many of the tests and conformance requirements are specified in 3GPP TS 34.122,
"Universal Mobile Telecommunications System (UMTS); Terminal conformance specifi-
cation; Radio transmission and reception (TDD)".
The following sections describe how to perform and configure the measurement.
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Limit Settings and Conformance Requirements
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3.1 TD-SCDMA TX Tests
TX tests have many characteristics in common. The following sections describe these
characteristics and show how to perform TX tests.
3.1.1 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.
The input level ranges of all RF COM connectors are identical.
See also: "RF Connectors" in the R&S CMW user manual, chapter "Getting Started"
TD-SCDMA TX Tests