Anritsu Spectrum Master MS2720T, User Manual

Page: 638 / 1035

3GPP MG PN: 10580-00234 Rev. T 4-1
Chapter 4 — TD-SCDMA/HSPA+
Signal Analyzer
4-1 Introduction
The TD-SCDMA/HSPA+ Signal Analyzer offers three options:
• RF Measurements
• Demodulator
• Over-The-Air (OTA) Measurements
Three display types are provided for RF Measurements: Channel Spectrum display, Power
versus Time display, or the RF Summary table.
Demodulator measurements can be viewed in either the CDP Data display or the Modulation
Summary table.
The Over-the-Air Code Scan measurement displays the power of all 32 sync codes in
sequential order. The Tau Scan measurement displays the codes based on Tau values.
4-2 General Measurement Setups
Refer to the instrument User Guide for information on how to select the TD-SCDMA/HSPA+
Signal Analyzer mode, set up frequency and amplitude, and perform file management.
4-3 TD-SCDMA/HSPA+ RF Measurements
The following parameters are measured in the RF Measurement mode.
Channel Power
Channel power measures the average time domain power within the 1.6 MHz channel
bandwidth and is expressed in dBm.
Channel Power (RRC)
Channel Power (RRC) is similar to Channel Power but is measured after being filtered by
using the Root Raised Cosine (RRC) filter. It is usually smaller than channel power.
Slot x Pwr
X denotes slots 0 through 6. This is the power in each of the 7 slots, excluding the gap.
Occ BW
Occupied bandwidth is the calculated bandwidth containing 99% of the total integrated power
occupied in the span. Span is 5 MHz when Number of Carrier is set to 1. For all other values,
span is set to 1.6 MHz.
DwPTS Pwr
The power in the Downlink Pilot slot, excluding the gap.
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