Atomic ACLR-AC Guia de Resolução de Problemas descarregar pdf (Página 9)

9

Spectrum Master™ MS2720T Spectrum Analyzer Features

Introduction to Wireless Measurements

Signal Analyzers

LTE FDD/TDD

GSM/GPRS/EDGE

W-CDMA/HSPA+

CDMA /EV-DO

Fixed and Mobile WiMAX

TD-SCDMA/HSPA+

Typical Signal Analyzer Options

RF Measurements

Demodulation

Over-the-Air Measurements

Signal Analyzer Features

Measurement Summary Displays

Pass/Fail Limit Testing

Wireless Measurements

The Spectrum Master features

Wireless Measurements for the major

wireless standards around the world.

The Wireless Measurements are designed

to test and verify the following base

station transmitter performance:

• RF Quality

• Modulation Quality

• Downlink Coverage

The goal of these tests is to improve

the Key Performance Indicators (KPIs)

associated with:

• Call Drop Rate

• Call Block Rate

• Call Denial Rate

By understanding which test to perform

on the Spectrum Master when the KPIs

degrade to an unacceptable level, a

technician can troubleshoot down to

the Field Replacement Unit (FRU) in the

base station’s transmitter chain. This

will minimize the problem of costly no

trouble founds (NTF) associated with card

swapping. This will allow you to have a

lower inventory of spare parts as they are

used more efficiently.

Troubleshooting Guides

The screen shots on this page are all

measurements made over-the-air with

the MS2720T on commercial base stations

carrying live traffic. To understand

when, where, how, and why you make

these measurements Anritsu publishes

Troubleshooting Guides which explain for

each measurement the:

• Guidelines for a good measurement

• Consequences of a poor measurement

• Common faults in a base station

These Troubleshooting Guides for

Base Stations are one-page each per

Signal Analyzer. They are printed on tear-

resistant and smudge-resistant paper and

are designed to fit in the soft case of the

instrument for easy reference in the field.

They are complimentary and their part

numbers can be found in the ordering

information.

• LTE/TD-LTE Base Stations

• GSM/EDGE Base Stations

• W-CDMA/HSPA+ Base Stations

• CDMA Base Stations

• EV-DO Base Stations

• Fixed WiMAX Base Stations

• Mobile WiMAX Base Stations

• TD-SCDMA/HSPA+ Base Station

LTE signal

WiMAX signal

Troubleshooting guide

GSM or CDMA signal

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