Anritsu S251C Manuel d'utilisateur télécharger pdf (Page 48)

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 4-1 shows

an example of a typical transmission feed line system.

4-1

Figure 4-1. A Typical Transmission Feed Line System

1 2 ... 43 44 45 46 47 48 49 50 51 52 53 ... 82 83

Site Master 1
Model S251C 1
Antenna and 1
Cable Analyzer 1
WARRANTY 3
LIMITATION OF WARRANTY 3
TRADEMARK ACKNOWLEDGMENTS 3
Table of Contents 7
Appendix A - Reference Data 9
Appendix B - Windowing 9
Chapter 1 10
General Information 10
Optional Accessories 11
Performance Specifications 12
Chapter 1 General Information 13
Preventive Maintenance 15
ESD Precautions 15
Annual Verification 16
Chapter 2 18
Functions and Operations 18
Front Panel Overview 19
Function Hard Keys 20
Keypad Hard Keys 21
Soft Keys 23
MODE=DTF: 24
SOFTKEYS: 24
FREQ/DIST 24
AMPLITUDE 24
Power Monitor Menu (Option 5) 27
RF Source Menu 28
Self Test 32
Error Codes 33
Range Errors 34
Battery Information 35
Battery Charge Indicator 36
Battery Life 36
Important Battery Information 37
Chapter 3 38
Getting Started 38
Calibration 39
ENTER key. The messages Mea 40
ENTER key. The 40
Figure 3-2. Calibration Setup 40
Site Master S251C 41
Setting the Scale 42
Save and Recall a Setup 42
Save and Recall a Display 42
Recalling a Display 43
Changing the Units 44
Changing the Display Language 44
Printing 45
Printer Switch Settings 46
Using the Soft Carrying Case 47
Chapter 4 48
Cable & Antenna 48
Analysis 48
MODE key 50
Insertion Loss Measurement 52
´ Length (ft) = Loss (dB) 53
MARKER key 57
Two Port Measurements 59
TMA Measurements 60
Gain/Insertion Loss 61
RX/TX ANT 62
Chapter 4 Measurements 63
EXTERNAL POWER 64
SUPPLY (40-115) 64
RF OUT TEST PORT 64
(BIAS TEE) 64
Antenna to Antenna Isolation 66
4-21/4-22 68
Chapter 5 69
Site Master Software Tools 69
Installation 70
Using Software Tools 71
Plot Capture 72
Plot Properties 72
Trace Overlay or Plot Overlay 73
Saving Traces 73
Custom Cable List 74
Creating a Database 75
Printing Formats 75
Appendix A 76
Reference Data 76
Appendix A Reference Data 77
Appendix B 79
Windowing 79
Appendix B Windowing 80

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Anritsu S251C Manuel d'utilisateur Page 48

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