Anritsu S251C manual One Port Measurements, Line Sweep Fundamentals

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Chapter 4

Cable & Antenna

Analysis

Introduction

This chapter provides a description of cable and antenna measurements in one port and two port modes. Measurements include line sweeping fundamentals and line sweeping measure- ment procedures, available when the Site Master is in frequency or DTF mode.

One Port Measurements

Line Sweep Fundamentals

In wireless communication, the transmit and receive antennas are connected to the radio through a transmission line. This transmission line is usually a coaxial cable or waveguide. This connection system is referred to as a transmission feed line system. Figure 4-1shows an example of a typical transmission feed line system.

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Figure 4-1. A Typical Transmission Feed Line System

4-1

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Contents Site Master Model S251C Antenna Cable Analyzer Page Warranty Page Table of Contents Cable & Antenna Analysis Iii/iv Introduction Standard AccessoriesDescription Optional Accessories OptionsPerformance Specifications Description Site Master Performance Specifications 2 Preventive Maintenance ESD PrecautionsAnnual Verification Anritsu Service Centers Test Connector Panel Chapter Functions and OperationsFront Panel Overview Active Function Block Soft KeysFunction Hard Keys ModeKeypad Hard Keys ClearAuto Soft Keys MODE=FREQ FREQ/DIST SoftkeysMODE=DTF FREQ/DIST Softkeys Functions and Operations Amplitude Power Monitor Menu Option MODE=POWER Monitor SoftkeysRF Source Menu MODE=RF Source SoftkeysLimit Segment 1 Segment SYS Symbols Self TestError Codes Self Test ErrorsRange Errors ERRORD2Charging the Battery in the Site Master Battery InformationCharging a New Battery Charging the Battery in the Optional ChargerBattery Charge Indicator Battery LifeImportant Battery Information Power On Procedure Chapter Getting StartedSelect the Frequency or Distance CalibrationCalibration Procedure Single Port CalibrationCalibration Procedure Dual Port RF in Test Port RF OUT Test PortSave and Recall a Setup Setting the ScaleSave and Recall a Display Recalling a Display Changing the Units Set the Distance and Cable TypeChanging the Display Language Printing Printing a ScreenPrinter Switch Settings PrinterUsing the Soft Carrying Case Using the Site Master Soft Carrying CaseOne Port Measurements Line Sweep FundamentalsInformation Required for a Line Sweep MeasurementsTypical Line Sweep Test Procedures System Return Loss Measurement2is an example of a typical system return loss trace Procedure Cable Loss Mode Insertion Loss MeasurementType Attenuation dB/ft Length ft = Loss dB Procedure Return Loss Mode Distance-To-Fault DTF Transmission Line Test Procedure DTF-Return Loss ModeProcedure DTF-SWR Mode Antenna Subsystem Return Loss Test Vswr Two Port Measurements IntroductionTMA Measurements TMA-STMA Gain Measurement After Calibration TMA-DD 12. TMA-DD Gain Measurement TMA-D 14. TMA-D Gain Measurement Antenna to Antenna Isolation 15. System IsolationQuency settings for common systems Antenna-to-Antenna Isolation Measurement21/4-22 Features System RequirementsInstallation Communication Port SettingInterface Cable Installation Using Software ToolsDownloading Traces from the Site Master Plot Capture Plot PropertiesTrace Overlay or Plot Overlay Saving TracesCustom Cable List Saving a Plot to a SpreadsheetCreating a Database Printing FormatsCoaxial Cable Technical Data Appendix a Reference DataAppendix a Reference Data A-4 Appendix B Windowing ExamplesAppendix B Windowing B-4