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WCDMA PRACH Measurement
R&S
®
CMW-KG4xx/-KM4xx/-KS4xx
856
User Manual 1173.9657.02 ─ 11
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Magnitude Error (vs preamble and vs chip)
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Phase Error (vs preamble and vs chip)
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Frequency Error (vs preamble)
Each of the detailed views shows a bar graph or diagram and a table of results per pre-
amble.
Fig. 5-9: WCDMA PRACH: EVM
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Error Vector Magnitude, Magnitude Error, Phase Error and Frequency Error
The bar graphs cover up to 5 preambles and display one result per preamble, cal-
culated as the average of the measured quantity of all samples in the preamble,
excluding a 25 µs guard period at the beginning and end of the preamble.
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Error Vector Magnitude vs Chip, Magnitude Error vs Chip, and Phase Error vs Chip
The diagrams cover all 4096 chips of the "Preselected Preamble" and contain one
measurement result per chip.
5.2.7.3
Detailed Views: I/Q Constellation Diagram
The constellation diagram shows the modulation symbols of the preselected preamble
in the I/Q plane.
General Description
深圳德标仪器
135-1095-0799