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WCDMA Multi Evaluation Measurement
R&S
®
CMW-KG4xx/-KM4xx/-KS4xx
597
User Manual 1173.9657.02 ─ 11
See also: "Statistical Results" in the R&S
CMW user manual, chapter "System Over-
view"
Remote command:
Detection Mode ← Modulation / CDP
In the "3GPP Signal Auto" detection mode, the R&S
CMW uses the scrambling code
and slot format information to synchronize to the received signal, irrespective of the
channel configuration.
Remote command:
Analysis Mode ← Modulation / CDP
Defines whether a possible origin offset is included in the measurement results (modu-
lation and code domain) or subtracted out.
See also: "I/Q Offset, I/Q Imbalance, Waveform Quality" in the R&S
CMW user man-
ual, chapter "System Overview"
●
With Origin Offset:
The results include a possible origin offset. This mode conforms to 3GPP specifica-
tions.
●
No Origin Offset:
The origin offset is subtracted out.
Remote command:
Chn. Detect Threshold ← Modulation / CDP
Minimum signal strength of the DPDCH and the E-DPDCHs in the WCDMA signal (if
present) to be detected and evaluated. The threshold corresponds to the ratio of the
(E-)DPDCH power to the (E-)DPCCH power in dB. Channels with a power below the
threshold are not considered for the calculation of modulation and CDP results.
The channel detection threshold is important to distinguish the (E-)DPDCH from
unwanted signals, e.g. noise or non-orthogonal components that may be detected as
fictitious (E-)DPDCHs. A low threshold value represents a weaker selection criterion
and increases the risk of detecting unwanted signals. On the other hand a high thresh-
old may prevent the detection of real (E-)DPDCH signals.
Remote command:
Slot Number (Table) ← Modulation / CDP
Selects a particular slot within the "Measurement Length" where the R&S
CMW dis-
plays a table of statistical measurement results for the multislot measurements. These
results are measured for all slots and can be displayed for one slot at a time.
See also
chapter 3.2.1.3, "Defining the Scope of the Measurement"
Remote command:
GUI Reference
深圳德标仪器