Anritsu Site Master S251A User manual

Site Master ™
S251A
Antenna and
Cable Analyzer
User's Guide
Hand-Held Tester For Antennas, Transmission
Lines And Other RF Components
Color Cover P/N: 00986-00022

WARRANTY
The Anritsu product(s) listed on the title page is (are) warranted
against defects in materials and workmanship for one year from the
date of shipment.
Anritsu's obligation covers repairing or replacing products which prove
to be defective during the warranty period. Buyers shall prepay trans-
portation charges for equipment returned to Anritsu for warranty re-
pairs. Obligation is limited to the original purchaser. Anritsu is not
liable for consequential damages.
LIMITATION OF WARRANTY
The foregoing warranty does not apply to Anritsu connectors that have
failed due to normal wear. Also, the warranty does not apply to de-
fects resulting from improper or inadequate maintenance by the
Buyer, unauthorized modification or misuse, or operation outside the
environmental specifications of the product. No other warranty is ex-
pressed or implied, and the remedies provided herein are the Buyer's
sole and exclusive remedies.
TRADEMARK ACKNOWLEDGEMENTS
MS-DOS, Windows, Windows for Workgroups, Windows NT, and Win-
dows 95 are registered trademarks of the Microsoft Corporation.
Site Master and Cable Mate are trademarks of Anritsu Company.
NOTICE
Anritsu Company has prepared this manual for use by Anritsu Com-
pany personnel and customers as a guide for the proper installation,
operation and maintenance of Anritsu Company equipment and com-
puter programs. The drawings, specifications, and information con-
tained herein are the property of Anritsu Company, and any
unauthorized use or disclosure of these drawings, specifications, and
information is prohibited; they shall not be reproduced, copied, or
used in whole or in part as the basis for manufacture or sale of the
equipment or software programs without the prior written consent of
Anritsu Company.

Table of Contents
General Information ..........1-1
Introduction..................1-1
Description ..................1-1
Standard Accessories.............1-2
Options ....................1-3
Optional Accessories .............1-3
Performance Specifications .........1-5
Preventive Maintenance ...........1-8
Calibration ..................1-9
Annual Verification .............1-10
Connectors and Controls .......2-1
Introduction..................2-1
Test Panel Connectors ............2-1
Keypad Controls ...............2-2
Soft Keys and Menus .............2-7
Determining Remaining Battery Life . . . 2-26
Printing....................2-27
Printer Switch Settings ................2-27
Printing a Screen ...................2-28
Symbols ...................2-29
Self Test ...................2-29
Error Codes .................2-29
Self Test Errors ....................2-29
Range Errors .....................2-29
Replacing the Battery ............2-29
Using the Soft Carrying Case........2-35
August 1998 10580-00020
Copyright 1998, Anritsu Co. Revision: A

Operation ................3-1
Introduction..................3-1
Operating Functions .............3-1
Making Common Function Selections ...3-3
Applying Power ....................3-3
Setting Options .....................3-3
Setting Markers ....................3-3
Setting Scale/Limits ..................3-4
Return Loss (SWR) and Cable Loss
(One Port) Measurement ..........3-5
Required Equipment..................3-5
Device-Under-Test Specification ...........3-5
Procedure ........................3-5
Selecting the Measurement Mode...........3-5
Selecting the Frequency Range ............3-7
Performing a Calibration ...............3-7
Cable Return Loss Measurement ...........3-9
Setting the Limit Line .................3-9
Setting the Markers ..................3-9
Saving Display to Memory ..............3-11
Cable Loss Measurement...............3-11
Scaling the Display ..................3-11
Saving Display to Memory ..............3-12
DTF Measurement .............3-13
Required Equipment .................3-13
Device-Under-Test Specification...........3-13
Procedure .......................3-13
DTF Parameters Setup ................3-13
Performing a Calibration...............3-15
DTF Measurement (Determining the Length
of the Cable) .....................3-16
DTF Measurement (Determining the Quality
of the Cable) .....................3-18
Insertion Gain (Amplifier) Measurement . 3-20
Required Equipment .................3-20
ii

Device-Under-Test Specification...........3-20
Procedure .......................3-20
Insertion Gain Mode Selection............3-20
Selecting the Frequency Range ...........3-21
Performing a Calibration...............3-21
Amplifier Gain Measurement ............3-24
Setting the Markers..................3-24
Activating the Bias Tee ................3-27
Scaling the Display ..................3-27
Saving Display to Memory ..............3-28
Making Power Measurements .......3-29
Entering Power Monitor Mode ...........3-29
Zeroing the Power Monitor .............3-29
Measuring High Input Power Levels ........3-29
Displaying Power in dBm and Watts ........3-30
Displaying Relative Power ..............3-30
RF Source Operation ............3-31
Generating a CW Frequency.............3-31
Software Tools Program........4-1
Description ..................4-1
Requirements .................4-1
Communication Port Setting.........4-2
Changing COM Port Settings–Windows 3.1 .....4-2
Changing COM Port Settings–Windows 95 .....4-4
Software Installation .............4-6
Plot Capture..................4-8
Capture multiple to database .............4-8
Capture multiple traces to PC screen.........4-9
Single trace capture..................4-10
Program Operation .............4-11
Fault Location Software ..........4-11
Smith Chart Software............4-12
Saving a Plot as a Windows Metafile....4-12
iii
iii

Saving Data to a Spreadsheet........4-13
Saving Data to a Database .........4-13
“Drag-n-Drop” ...............4-14
Printing....................4-14
Appendix A Reference Data .....A-1
Description ..................A-1
iv

How to Use this Manual
The operation of the Site Master ™ is straightforward and intuitive.
However, you may find it helpful to review the operation of the keys
and menus prior to first-time use.
Descriptions of the keys and menus are provided in Chapter 2; mea-
surement procedures are found in Chapter 3.
First-time users and maintenance supervisors will benefit from perusing
the material in Chapter 1. This chapter describes the instrument and
provides listings of options, accessories, and performance specifica-
tions.
v
Please Recycle
This product contains a rechargeable nickel-
cadmium battery. Spent nickel-cadium bat-
teries are valuable resources, do not throw
them away. Arrange for proper return for re-
cycling in your locality. If you do not have
access to proper disposal methods, return the
battery to your Anritsu service center.
Anritsu service centers will dispose of the
unit at no charge. Anritsu service centers are
listed in Table 1-2 (page 1-11).

Site Master S251A
1-0
Figure 1-1. Site Master System

Chapter 1
General Information
Introduction
This chapter provides a description, performance specifications, op-
tional accessories, preventive maintenance, and calibration require-
ments for the Site Master model S251A. Throughout this manual, the
term Site Master will refer to the model S251A.
Model Frequency Range
S251A 625 to 2500 MHz
Description
The Site Master (Figure 1-1) is a hand held S21 (transmission gain or
loss), SWR/RL (standing wave ratio/return loss), and Distance-To-
Fault (DTF) measurement instrument that includes a built-in synthe-
sized signal source and an optional power monitor. It uses a keypad to
enter data and a liquid crystal display (LCD) to provide a graphical in-
dication of S21, SWR, or RL over the selected frequency range. The
Site Master has a built-in distance-to-fault (DTF) capability. It is capa-
ble of up to two hours of continuous operation from a fully charged in-
ternal battery and can be operated from a 12.5 dc source (which will
also simultaneously charge the battery). Built-in energy conservation
features can be used to extend battery life over an eight-hour work day.
The Site Master is designed for measuring transmission gain/insertion
loss, SWR, return loss, or cable insertion loss and locating faulty RF
1-1
1