Anritsu 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 trans­portation charges for equipment returned to Anritsu for warranty re­pairs. 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 de­fects 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 ex­pressed 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 Win­dows 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 Com­pany personnel and customers as a guide for the proper installation,
operation and maintenance of Anritsu Company equipment and com­puter programs. The drawings, specifications, and information con­tained 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; mea­surement 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 specifica­tions.

Please Recycle

This product contains a rechargeable nickel­cadmium battery. Spent nickel-cadium bat­teries are valuable resources, do not throw
them away. Arrange for proper return for re­cycling 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).

v

Figure 1-1. Site Master System

1-0

Site Master S251A

Chapter 1
General Information

Introduction

This chapter provides a description, performance specifications, op­tional accessories, preventive maintenance, and calibration require­ments 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-To­Fault (DTF) measurement instrument that includes a built-in synthe­sized signal source and an optional power monitor. It uses a keypad to
enter data and a liquid crystal display (LCD) to provide a graphical in­dication of S
Site Master has a built-in distance-to-fault (DTF) capability. It is capa­ble of up to two hours of continuous operation from a fully charged in­ternal 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.

, SWR, or RL over the selected frequency range. The

21

1

The Site Master is designed for measuring transmission gain/insertion
loss, SWR, return loss, or cable insertion loss and locating faulty RF

1-1

Chapter 1 General Information

components in antenna systems. Power monitoring and bias tee capa­bilities are available as options. The displayed trace can be scaled
and/or enhanced with settable frequency markers and/or a limit line. A
menu option provides for an audible “beep” when the limit value is ex­ceeded. To permit use in low-light environments, the LCD can be back
lit using a front panel key.

Standard Accessories

A PC based software program (called Software Tools) provides an on­line database record for storing measurement data. Site Master Soft­ware Tools can also convert the Site Master display to a Microsoft
Windows 95 graphic. Measurements stored in the Site Master internal
memory are down-loaded to the PC using the included serial cable.
This null-modem serial cable connects between the Serial Interface
connector on the Site Master and a Com Port on a DOS/Windows­based PC. Once stored, the graphic trace can then be displayed, scaled,
and/or enhanced with markers and limit lines. Historical graphs can be
overlaid with current data by using the PC's mouse in “drag-n-drop”
fashion. The underlying data can be extracted and used in spreadsheets
or for other analytical tasks.

The Software Tools program also performs DTF (Distance To Fault) or
Fault Location by clicking on the appropriate icon.

1-2

Chapter 1 General Information

The following items are supplied with the basic hardware.

Soft Carrying Case

•

AC-DC Adapter

•

Automotive Cigarette Lighter 12 Volt DC Adapter,

•

3 1/2-inch floppy disk containing the Software Tools program.

•

This program contains Fault Location (DTF) and Smith Chart
functions

Serial Interface Cable (Null Modem Type)

•

One year Warranty (includes battery, firmware, and software)

•

User's Guide

•

Options

• Option 5 — Add RF Wattmeter Power Monitor

•

Option 10 — Add Bias Tee

Optional Accessories

•

Anritsu Precision N (m) Short/Open, Part No. 22N50

•

Anritsu Precision N (f) Short/Open, Part No. 22NF50

•

Site Master Precision N (m) Load, 42 dB, Part No. SM/PL

•

Site Master Precision N (f) Load, 42 dB, Part No. SM/PLNF

•

7/16 (m) Precision Open/Short/Load, Part No. 2000-767

•

7/16 (f) Precision Open/Short/Load, Part No. 2000-768

•

Adapter, Precision N (m) to N (m), Part No. 34NN50A

1-3

Chapter 1 General Information

Adapter, Precision N (f) to N (f), Part No. 34NFNF50

•

Adapter, 7/16 (f) to N (m), Part No. 510-90

•

Adapter, 7/16 (f) to N (f), Part No. 510-91

•

Adapter, 7/16 (m) to N (m), Part No. 510-92

•

Adapter, 7/16 (m) to N (f), Part No. 510-93

•

Adapter, 7/16 DIN (m) to 7/16 DIN (m), Part No. 510-96

•

Adapter, 7/16 DIN (f) to 7/16 DIN (f), Part No. 510-97

•

Armoured Test Port Extension Cable, 1.5 meter, N (m) to

•

N (f), Part No. 15NNF50-1.5A

• Armoured Test Port Extension Cable, 3.0 meter, N (m) to

N (f), Part No. 15NNF50-3.0A

• Armoured Test Port Extension Cable, 5.0 meter, N (m) to

N (f), Part No. 15NNF50-5.0A

• Armoured Test Port Extension Cable, 1.5 meter, N (m) to

N (m), Part No. 15NN50-1.5A

•

Armoured Test Port Extension Cable, 3.0 meter, N (m) to
N (m), Part No. 15NN50-3.0A

•

•

•

•

1-4

Armoured Test Port Extension Cable, 5.0 meter, N (m) to
N (m), Part No. 15NN50-5.0A

Armoured Test Port Extension Cable, 1.5 meter, N (m) to
7/16 DIN (f), Part No. 15NDF50-1.5A

Armoured Test Port Extension Cable, 1.5 meter, N (m) to
7/16 DIN (m), Part No. 15ND50-1.5A

RF Detector, 1 to 3000 MHz, N(m) input connector, 50 Ohms,
Part No. 5400-71N50

Chapter 1 General Information

Transit Case for Site Master, Part No. 760-215

•

HP Deskjet 340 Printer, Part No. 2000-766

•

Serial-to-Parallel Converter Cable (use with the HP 340

•

Printer), Part No. 2000-753
Seiko DPU-414 Thermal Printer, Part No. 2000-754 (U.S.) or

•

2000-761 (Europe)
US Adapter (use with the DPU-414 Printer),

•

Part No. 2000-1002
Europe Adapter (use with the DPU-414 Printer)

•

Part No. 2000-1003
Battery Pack (use with the DPU-414 Printer)

•

Part No. 2000-1004

• Serial Interface Cable (use with the DPU-411 Printer),

Part No. 2000-XXX

• Thermal Paper (use with the DPU-411/DPU-414 Printer),

Part No. 2000-755

Performance Specifications

Performance specifications are provided in Table 1-1, on the following
page.

1-5

Chapter 1 General Information

Table 1-1. Performance Specifications (1 of 2)

Specifications are valid when the unit is calibrated at ambient tem­perature after a 5 minute warmup.

Description Value

Frequency Range: 625 to 2500 MHz
Frequency Accuracy (RF Source

Mode)
Frequency Resolution 100 kHz
SWR:

Range
Resolution

Return Loss:

Range
Resolution

Cable Insertion Loss:

Range
Resolution

Insertion Loss/Gain:

Range
Resolution

**Distance-To-Fault (DTF):

Range
Resolution (in meters)
(Rectangular Windowing)

Bias Tee:

Input Voltage
Output Current

75 parts per million @ 25°C*

1.00 to 65.00

0.01

0.0 to 54.00 dB

0.01 dB

0.0 to 54.00 dB

0.01 dB

–120.0 to 100.0 dB

0.01 dB

0 to (Resoution x 129)
( . )( )15 10

D

Where
propagation velocity.

12.5 - 15 Vdc
200 mA max

8

´

Frequency

V

is the cable's relative

f

V

f

1-6

Chapter 1 General Information

Table 1-1. Performance Specifications (2 of 2)

Wattmeter Power Monitor:

Range
Offset Range

Resolution

Test Port, Type N 50 Ohms
***Immunity to Interfering signals

up to the level of +10 dBm, Reflection

Maximum Input (Damage Level):

Test Port, Type N
RF Detector

Measurement Accuracy:
Measurement accuracy depends on calibration components.
Precision calibration components have a directivity of 42 dB.

Temperature:

Storage

Operation
Weight: 3.0 pounds (1.36 kg)
Size: 8x7x2

–50.0 to +20 dBm

10.0 nW to 100.0 mW
0 to +60.0 dB

or

0.1 dB

0.1 xW

+30 dBc, Transmission

+22 dBm
+20 dBm

–20° Cto75° C

0° Cto50° C

1

inches

(203.2 x 177.8 x 57.2 mm)

4

or

±2 ppm/D°C from 25°C

** Fault location is accomplished by inverse Fourier Transformation of data taken with
the Site Master. Resolution and maximum range depend on the number of frequency
data points, frequency sweep range and relative propagation velocity of the cable being
tested.

*** Immunity measurement is made in CW mode with incoming intefering signal ex­actly at the same frequency (worst case situation). Typical immunity is better when
swept frequency is used.

1-7

Chapter 1 General Information

Preventive Maintenance

Site Master preventive maintenance consists of cleaning the unit and
inspecting and cleaning the RF connectors on the instrument and all ac­cessories.

Clean the Site Master with a soft, lint-free cloth dampened with water
or water and a mild cleaning solution.

CAUTION: To avoid damaging the display or case,
do not use solvents or abrasive cleaners.

Clean the RF connectors and center pins with a cotton swab dampened
with denatured alcohol. Visually inspect the connectors. The fingers of
the N (f) connectors and the pins of the N(m) connectors should be un­broken and uniform in appearance. If you are unsure whether the con­nectors are good, gauge the connectors to confirm that their dimensions
are correct.

Visually inspect the test port cable(s). The test port cable should be uni­form in appearance, not stretched, kinked, dented, or broken.

1-8

Chapter 1 General Information

Calibration

The Site Master is a field portable unit operating in the rigors of the
test environment. An Open-Short-Load (OSL) calibration should be
performed prior to making a measurement in the field. A built-in tem­perature sensor in the Site Master advises the user, via an icon located
on the left side of the LCD screen, that the internal temperature has ex­ceeded a safety window, and the user is advised to perform another
OSL calibration in order to maintain the integrity of the measurement.

NOTES:
For best calibration results—compensation for all
measurement uncertainties—ensure that the Open/
Short/Load is at the end of the test port or optional ex­tension cable; that is, at the same point that you will
connect the antenna or device to be tested.

For best results, use a phase stable Test Port Exten­sion Cable (see Optional Accessories). If you use a
typical laboratory cable to extend the
port to the device under test, cable bending subse­quent to the OSL calibration will cause uncompen­sated phase reflections inside the cable. Thus, cables
which are NOT phase stable may cause measure­ment errors that are more pronounced as the test fre­quency increases.

Site Master

test

For optimum calibration, Anritsu recommends using
precision calibration components.

1-9

Chapter 1 General Information

Annual Verification

Anritsu recommends an annual calibration and performance verifica­tion of the Site Master and the OSL calibration components by local
Anritsu service centers. Anritsu service centers are listed in Table 1-2
beginning on the following page.

The Site Master itself is “self calibrating”, meaning that there are no
field-adjustable components. However, the OSL calibration compo­nents are crucial to the integrity of the calibration and therefore, must
be verified periodically to ensure performance conformity. This is espe­cially important is the OSL calibration components have been acciden­tally dropped or over-torqued.

1-10

Chapter 1 General Information

Table 1-2. Anritsu Service Centers (1 of 2)

UNITED STATES

ANRITSU COMPANY
685 Jarvis Drive
Morgan Hill, CA 95037-2809
Telephone: [phone]
FAX: [phone]

ANRITSU COMPANY
10 Kingsbridge Road
Fairfield, NJ 07004
Telephone: [phone]
FAX: [phone]

AUSTRALIA

ANRITSU PTY. LTD.
Unit 3, 170 Foster Road
Mt. Waverley,VIC 3149
Australia
Telephone: [phone]
Fax: [phone]

BRAZIL

ANRITSU ELECTRONICA LTDA.
Praia de Botafogo 440, Sala 2401
CEP 22250-040,Rio de Janeiro,RJ, Brasil
Telephone: [phone]
Fax: [phone]

CANADA

ANRITSU INSTRUMENTS LTD.
215 Stafford Road, Unit 102
Nepean, Ontario K2H 9C1
Telephone: [phone]
FAX: [phone]

CHINA

ANRITSU BEIJING SERVICE CENTER
Beijing Fortune Building
416W, 5 Dong San Huan Bei Lu
Chaoyang qu
Beijing 100004, China
Telephone: [phone]
FAX: [phone]

FRANCE

ANRITSU S.A
9 Avenue du Quebec
Zone de Courtaboeuf
91951 Les Ulis Cedex
Telephone: [phone]
FAX: [phone]

GERMANY

ANRITSU GmbH
Grafenberger Allee 54-56
D-40237 Dusseldorf
Germany
Telephone: [phone]
FAX: [phone]

INDIA

MEERA AGENCIES (P) LTD
A-23 Hauz Khas
New Delhi 110 016
Telephone: [phone]
FAX: [phone]

1-11

Chapter 1 General Information

Table 1-2. Anritsu Service Centers (2 of 2)

ISRAEL

TECH-CENT, LTD
Haarad St. No. 7, Ramat Haahayal
Tel-Aviv 69701
Telephone: [phone]
FAX: [phone]

ITALY

ANRITSU Sp.A
Rome Office
Via E. Vittorini, 129
00144 Roma EUR
Telephone: [phone]
FAX: [phone]

JAPAN

ANRITSU CORPORATION
1800 Onna Atsugi-shi
Kanagawa-Prf. 243 Japan
Telephone: [phone]
FAX: [phone]

KOREA

ANRITSU KOREA (AWK)
#901 Daeo Bldg. 26-5
YeoidoDong, Youngdeungpo
Seoul Korea 150 010
Telephone: [phone]
FAX: [phone]

SINGAPORE

ANRITSU (SINGAPORE) PTE LTD
3 Shenton Way #24-03
Shenton House
Singapore 0106
Telephone: [phone]
FAX: [phone]

SOUTH AFRICA

ETESCSA
1st Floor Montrose Place
Waterfall Park, Becker Road
MIDRAND
SOUTH AFRICA
Telephone:[phone]
Fax: [phone]

SWEDEN

ANRITSU AB
Botvid Center
S-145 84
Stockholm, Sweden
Telephone: [phone]
FAX: [phone]

TAIWAN

ANRITSU CO., LTD.
8F, No. 96, Section 3
Chien Kuo N. Road
Taipei, Taiwan,R.O.C.
Telephone: [phone]
FAX: [phone]

UNITED KINGDOM

ANRITSU LTD.
200 Capability Green
Luton, Bedfordshire
LU1 3LU, England
Telephone: [phone]
FAX: [phone]

1-12

Chapter 1 General Information

This page intenionally blank.

1-13

Site Master S251A

Figure 2-1. Site Master Controls and Connectors

2-0

Chapter 2
Connectors and
Controls

Introduction

This chapter provides a description of each Site Master control and
connector. In addition, this chapter contains listings of the LCD icon
symbols and error messages and instructions for printing a screen.

Test Panel Connectors

The connectors and indicators located on the test panel are listed and
described below.

2

12.5-15VDC
(600 mA)

Battery
Charging

External
Power

Serial
Interface

Provides input for battery charging the unit. Input is

12.5 to 15 Vdc @ 600 mA.

Indicator light to show that the battery is being
charged. (Indicator automatically shuts off when the
battery is fully charged.)

Indicator light to show that the Site Master is being
powered by the external charging unit.

Provides an RS232 DB9 interface with a Com Port
on a personal computer (for use with the Anritsu

2-1

Chapter 2 Connectors and Controls

Software Tools program). Also provides an interface
to a HP Deskjet 340 printer or a Seiko DPU-411/
DPU-414 Thermal printer.

Refl Test
Port

Trans Test
Port

RF Det Provides RF detector input for the Power Monitor.

Provides RF output, 50W impedance.

Provides RF input, 50W impedance.

Keypad Controls

The next five pages contains an alphabetical listing of the Site Master
front panel keypad controls along with a brief description of each.

Turns the liquid crystal display (LCD) back-lighting
ON or OFF. (Leaving back lighting off conserves
battery power.)

AUTO
SCALE

CAL Displays the calibration configuration—the type of

Automatically scales the display for optimum
resolution.

calibration, the frequency range, the valid tempera­ture range of the calibration, and the current tempera­ture.

ENTER Implements certain menu and key selections.

2-2

Chapter 2 Connectors and Controls

ESCAPE
CLEAR

MARKER Calls up the Markers Menu, described on page 2-23.

ON

OFF

PRINT Prints the current display to the selected printer.

RECALL
DISPLAY

RECALL
SETUP

Exits the present operation and/or clears the display.
If a parameter is being edited, pressing this key will
clear the value currently being entered and restore the
last valid entry. Pressing this key again will close the
parameter. During normal sweeping, pressing this
key will move up one menu level.

Turns the Site Master on or off. When turned on, the
system state at the last turn-off is restored. If the
ESCAPE/CLEAR key is held down, the factory pre­set state is restored.

Recalls a previously saved trace from memory loca­tion 1 through 50. When the key is pressed, “Recall
display:” appears on the display. Select an appropri­ate number from the keypad and press the ENTER
key to implement.

Recalls a previously saved setup from memory loca­tion 0 through 4. When the key is pressed, “Recall
Setup:” appears on the display. Select an appropriate
number using the Up/Down Arrow key and press the
ENTER key to implement. Setup 0 recalls the fac­tory preset state.

RUN

HOLD

When in the Hold mode, this key starts the Site Mas­ter sweeping and provides a Single Sweep Mode

trigger; when in the Run mode, it pauses the sweep.

2-3

Chapter 2 Connectors and Controls

When in the Hold mode, the hold symbol (Table 2-1,
page 2-30) appears on the left side of the LCD.
(HOLD conserves considerable battery power.)

+/– When in the Gain/Insertion Loss measurement mode,

the +/– key is used in conjunction with the Scale
Menu to toggle the top, bottom, and limit numerical
value sign. A negative numeric value is generated by
pressing the +/– key after the number is entered.

SAVE
DISPLAY

CAUTION:The selected memory location will be over-

written by the SAVE DISPLAY operation. No warning
is given.

Saves the displayed trace to 1 of 50 internal
non-volatile memory locations. When the key is
pressed, the next available empty memory location
appears on the display (i.e. "Save display 3”). Press
ENTER to save to the current empty memory loca­tion or select an appropriate number from the keypad
or use the Up/Down Arrow key and press the
ENTER key to implement. Use the keypad or the
Up/Down Arrow key to manually enter the Time,
Date, and Trace Designator for each saved display.

To erase saved displays select 0 and press ENTER.
Individual displays may be selected and erased by en­tering the display number and pressing ENTER. Se­lecting display 0 will erase all saved displays.

2-4

Chapter 2 Connectors and Controls

SAVE
SETUP

Saves the current system setup to 1 of 4 internal
non-volatile memory locations. When the key is
pressed, “Save Setup:” appears on the display. Select
an appropriate number using the Up/Down Arrow
key and press the ENTER key to implement.

CAUTION:The selected memory location will be over­written by the SAVE SETUP operation. No warning is
given.

SCALE Calls up the Scale Menu, described on page 2-14.

START
CAL

Follow the text in the message area that instructs you
to do the following:

q Connect OPEN to REFL port, Press ENTER

The Site Master then measures the calibration
“open” that you must attach to the end of the Refl
test port.

q

Connect SHORT to REFL port, Press ENTER

The Site Master then measures the calibration
“short” that you must attach to the end of the Refl
test port.

q

Connect LOAD to REFL port, Press ENTER

The Site Master then measures the 50W termina­tion (load) that you must attach to the end of the
Refl test port.

2-5

Chapter 2 Connectors and Controls

Connect LOAD to REFL and TRANS ports,

q

press ENTER

The Site Master then measures the isolation (50W
termination load) that you must attach to the end
of the Refl test port and the Trans test port.

Connect REFL port to TRANS port, Press

q

ENTER

The Site Master then measures the through
"transmission” that you must attach from the Refl
test port to the Trans test port.

NOTE:
The combined measurements of an open, a short, a
known-impedance load, a through, and an isolation
normalizes the measurement system, to account for
uncertainties introduced by measurement-system
components (e.g., cables, connectors, etc.).

Up/Down
Arrow Key

Increments or decrements a parameter value.

NOTE:
At turn on, before any other keys are pressed, the
Up/Down Arrow Key may be used to adjust display
contrast.

2-6

MODE

Display Area

M essage A rea

FREQ

SCALE

Chapter 2 Connectors and Controls

AUTO
SCALE

CAL

RECALL
SETUP

MARKER

RECALL
DISPLAY

PRIN T

ESCAPE

2

4

6

8

RUN/HOLD

0

.

OPT

START
CAL

SAVE
SETUP

SCALE

SAVE
DISPLAY

ON
OFF

1

3

5

7

9

CLEAR

ENTER

+/-

Soft Key

Labels

Soft Keys

Figure 2-2. Site Master Front Panel Display Layout

Soft Keys and Menus

Each of the soft keys has a corresponding soft key label area on the dis­play. The label identifies the function of the soft key for the current
menu selection.

Figure 2-3, on the following page, shows the menu structure, the soft
key labels for each menu selection, and the page where a description of
the menu can be found.

2-7

Chapter 2 Connectors and Controls

MAIN MENU

MODE MENU

FRE Q M EN U
FREQ (See Below)

DTF (See Below)

POW ER MONITOR (See Below)
RF SOURCE (See Below)

MODE

FRE Q
(D efault
Mode)

DTF

POW ER
MONITOR

RF
SOURCE

M ENU TITLE

MAIN MENU

FREQU ENC Y M ENU

SCALE MEN U

OPTION MENU

OPTIO N SUB-M ENU

MAIN MENU

DISTANCE MENU

DISTANC E SUB-M ENU

SCALE MEN U

OPTION MENU

OPTIO N SUB-M ENU

MAIN MENU

MAIN MENU

MODE

F1

TO P

BO TTO M

B1

B5

MODE

D1

LO SS PR O P V

TO P

BO TTO M

B1

B5

UNITS REL

FRE Q

POW ER

Figure 2-3. Site Master Menu Structure

SCALE MEN U

SO FT KEY LA B ELS

SCALE

FRE Q

F2

LIM IT

B2

B6

B7

SCALE

DIST

D2

DTF AID

CABLE

LIM IT

B2

B3

B6

B7

OFFSET

OPT

B4B3MORE

B8

OPT

W INDW

B4

B8

ZER O

OPTION MENU

OPTIO N SUB-M ENU

MAIN

MAIN

MAIN

MORE

MAIN

MAIN

MORE

MAIN

MAIN

MAIN

PAG E

2-9

2-13

2-14

2-15

2-16

2-10

2-17

2-18

2-14

2-15

2-16

2-11

2-12

2-8

Chapter 2 Connectors and Controls

Main Menu At turn on, the Main Menu soft keys, below, are dis-

played, and the Marker status is shown in the mes­sage area.

These soft keys provide the following menu selec­tions:

MODE — Selects the type of measurement. Use

q

the Up/Down Arrow key and the ENTER key to
select the type of measurement in the FREQ, DTF,
POWER MONITOR, and RF SOURCE measure­ment modes.

q FREQ — Selects the Frequency Menu, described

on page 2-13.

q SCALE —Selects the Scale Menu, described on

page 2-14.

q

OPT — Selects the Option Menu, described on
page 2-15.

2-9

Chapter 2 Connectors and Controls

DTF
Main Menu

When the DTF measurement mode is selected, the
Main Menu soft keys, below, are displayed, and the
Marker status is shown in the message area.

MODE

DIST

SCALE

OPT

These soft keys provide the following menu selec­tions:

MODE — Selects the type of measurement. Use

q

the Up/Down Arrow key and ENTER key to se­lect the type of measurement in the FREQ, DTF,
and POWER MONITOR measurement modes.

q DIST — Selects the Distance Menu, described on

page 2-17.

q SCALE — Selects the Scale Menu, described on

page 2-14.

q

OPT — Selects the Option Menu, described on
page 2-15.

2-10

Chapter 2 Connectors and Controls

Power
Monitor
Main Menu

When the Power Monitor measurement mode is se­lected, the Main Menu soft keys, below, are dis­played, and the units, relative, offset, and zero adjust
status are shown in the message area.

UNITS

UNITS — Toggles between dBm and Watts.

q

REL — Turns relative mode OFF, if currently

q

REL

OFFSET

OFFSET

ZER O

MAIN

ON. If relative mode is currently OFF, turns it ON
and causes the power level to be measured and
saved as the base level. Subsequent measurements
are then displayed relative to this saved value.
With units of dBm, relative mode displays dBr;
with units of Watts, relative mode displays %
(percent).

q

OFFSET — Turns Offset OFF, if currently ON.
If Offset is currently OFF, turns it ON and opens
the Offset parameter for data entry. Press ENTER
when data entry is complete.
Offset is the attenuation (in dB) inserted in the line
between the DUT and the RF detector. The at­tenuation is added to the measured input level
prior to display.

q

ZERO — Turns Zero OFF, if currently ON. If
Zero is currently OFF, turns it ON and initiates
collection of a series of power level samples,
which are averaged and saved. This saved value is
then subtracted from subsequent measurements
prior to display.

2-11

Chapter 2 Connectors and Controls

MAIN — Returns to the Main Menu.

q

RF Source
Main Menu

When the RF Source measurement mode is selected,
the Main Menu soft keys, below, are displayed and
the frequency is shown in the message area.

FREQ

FREQ — Opens the RF source frequency param-

q

POW ER

MAIN

eter for data entry. Press ENTER when data entry
is complete.

POWER — Toggles the RF source power be-

q

tween +6 dBm and –30 dBm.

q MAIN — Returns to the Main Menu.

2-12

Chapter 2 Connectors and Controls

Frequency
Menu
(FREQ)

Provides for setting sweep frequency end-points. Se­lected frequency values may be changed using the
keypad or Up/Down Arrow key.

Choosing FREQ causes the soft keys, below, to be
displayed and the corresponding values to be shown
in the message area.

F1

F1 — Opens the F1 parameter for data entry. This

q

is the start value for the frequency sweep. Press
ENTER when data entry is complete.

q F2 — Opens the F2 parameter for data entry. This

is the stop value for the frequency sweep. Press
ENTER when data entry is complete.

q MAIN — Returns to the Main Menu.

F2

MAIN

2-13

Chapter 2 Connectors and Controls

Scale Menu
(SCALE)

Provides for changing the display scale. Selected val­ues may be changed using the Up/Down Arrow key
or keypad.

Choosing SCALE causes the soft keys, below, to be
displayed and the corresponding values to be shown
in the message area.

Pressing the SCALE key on the keypad will also call
up this menu.

TO P

q TOP — Opens the TOP parameter for data entry

BOTTOM

LIM IT

MAIN

and provides for setting the top scale value. Press
ENTER when data entry is complete.

q BOTTOM — Opens the BOTTOM parameter for

data entry and provides for setting the bottom
scale value. Press ENTER when data entry is
complete.

q

LIMIT — Turns Limit OFF, if currently ON. If
Limit is currently OFF, turns it ON and opens the
Limit parameter for data entry. Press ENTER
when data entry is complete.

2-14

q

MAIN — Returns to the Main Menu.

Chapter 2 Connectors and Controls

Option
Menu
(OPT)

Provides for selecting Site Master options.
Choosing OPT causes the soft keys, below, to be dis-

played and the corresponding values to be shown in
the message area.

B1

B1 MATH — Opens a menu of trace math

q

B2

B3

B4

MORE

operation modes; OFF, TRACE + MEMORY,
TRACE – MEMORY, TRACE ¸ 2. Use the

Up/Down Arrow key and ENTER key to make a
selection.

q B2 LIMIT BEEP ON/OFF — Toggles the limit

beeping sound on or off. When on, the Site Mas-
ter sounds a beep when the measured value is
above the limit line.

q B3 BIAS TEE ON/OFF — Toggles the bias tee

option on or off. External power must be con­nected to the battery charging port to activate the
bias tee function. When on, the bias tee voltage
and current are displayed.

q

B4 SINGLE SWP ON/ OFF — Toggles the
single sweep function on or off. When on, the Site
Master will have to be manually triggered using
the RUN/HOLD key on the keypad for each
sweep.

q

MORE — Selects the Option Sub-Menu, de­scribed on page 2-16.

2-15

Chapter 2 Connectors and Controls

Option
Sub-Menu

Provides for selecting additional Site Master options.
Choosing MORE causes the soft keys, below, to be

displayed and the corresponding values to be shown
in the message area.

B5

B5 UNITS — Toggles between ENGLISH and

q

B6

B7

B8

MAIN

METRIC units.
B6 FIXED CW — Toggles the fixed CW mode

q

on or off.

q B7 PRINTER — Displays a menu of supported

printers—None, Seiko DPU-411, Seiko DPU-414,
and HP Deskjet 340. Use the Up/Down Arrow key
and ENTER key to make the selection.

q

B8 CONTRAST — Enables adjustment of the
LCD contrast. Use the Up/Down Arrow key and
ENTER key to set the contrast.

q

MAIN — Returns to the Main Menu.

2-16

Chapter 2 Connectors and Controls

Distance
Menu
(DIST)

Provides for setting Distance to Fault parameters. Se­lected distance values may be changed using the key­pad or Up/Down Arrow key. Entry can be in feet or
meters, depending on the setting of the B5 soft key in
the Option Sub-Menu (page 2-16).

Choosing DIST causes the soft keys, below, to be
displayed and the corresponding values to be shown
in the message area.

D1

D1 — Opens the start distance (D1) parameter for

q

D2

DTF AID

MORE

data entry. This is the start value for the distance
range. Press ENTER when data entry is complete.

q D2 — Opens the end distance (D2) parameter for

data entry. This is the end value for the distance
range. Press ENTER when data entry is complete.

q

DTF AID — Provides interactive help to optimize
DTF set up parameters. User is prompted for sys­tem parameter values of maximum distance, cen­ter frequency, cable type, or propagation velocity.
Frequency parameters are then calculated to opti­mize both range and resolution.

q

MORE — Selects the Distance Sub-Menu, de­scribed on page 2-18.

2-17

Chapter 2 Connectors and Controls

NOTE: Refer to Appendix A for a listing of common
coaxial cables showing values for “Relative Propaga­tion Velocity”and “Nominal Attenuation in dB/m @
1000 MHz”.

Distance
Sub-Menu

Provides for setting the cable loss and relative propa­gation velocity of the coaxial cable. Selected values
may be changed using the Up/Down Arrow key or
keypad.

Choosing MORE causes the soft keys, below, to be
displayed and the corresponding values to be shown
in the message area.

LO S S

q

LOSS — Opens the Cable Loss parameter for
data entry. Enter the loss per foot (or meter) for
the type of transmission line being tested. Press
ENTER when data entry is complete. (Range is

0.000 to 5.000 dB/m or 0.000 to 1.000 dB/ft)

q

PROP V (relative propagation velocity) — Opens
the Propagation Velocity parameter for data entry.
Enter the propagation velocity for the type of
transmission line being tested. Press ENTER
when data entry is complete. (Range is 0.010 to

1.000)

PRO P V

CABLE

W INDW

MAIN

2-18

Chapter 2 Connectors and Controls

CABLE — Opens a cable folder containing a stan-

q

dared cable list and a custom cable list. Use the
Up/Down Arrow key and ENTER key to select ei­ther the standard cable list or custom cable list.
Then, use the Up/Down Arrow key and ENTER
key to make a cable selection from the selected
list. This feature provides a rapid means of setting
both cable loss and propagation velocity.

NOTE: Standard cable loss is specified at 1000 MHz.
The custom cable list must be downloaded via the

“cable download” program supplied.

2-19

Chapter 2 Connectors and Controls

WINDW — Opens a menu of FFT windowing

q

types for the DTF calculation. Scroll the menu
using the Up/Down Arrow key and make a selec­tion with the ENTER key.

NOTE: Using Windowing
The theoretical requirement for inverse FFT is for the
data to extend from zero frequency to infinity. Side
lobes appear around a discontinuity due to the fact
that the spectrum is cut off at a finite frequency. Win­dowing reduces the side lobes by smoothing out the
sharp transitions at the beginning and end of the fre­quency sweep. As the side lobes are reduced the
main lobe widens thereby reducing the resolution.

In situations where there may be a small discontinuity
close to a large one, side lobe reduction Windowing
should be used. When distance resolution is critical
Windowing can be reduced. The types of Windowing
in order of increasing side lobe reduction are: rectan­gular, nominal side lobe, low side lobe, minimum side
lobe. Figures 2-4 thru 2-7, on pages 2-21 and 2-22,
are examples of the types of Windowing.

2-20

q

MAIN — Returns to the Main Menu.

R e tu rn Lo s s (d B )

Chapter 2 Connectors and Controls

D istance To Fault

-5

-1 0

-1 5

-2 0

-2 5

-3 0

-3 5

-4 0

-4 5

-5 0

10

5

25

20

15

30 35 40

Feet

45 50

Figure 2-4. Rectangular Windowing Example

D istance To Fault

-5

-1 0

-1 5

-2 0

-2 5

R e tu rn L o s s (d B )

-3 0

-3 5

-4 0

-4 5

-5 0

101520 25

5

30

Feet

45

35

50

40

Figure 2-5. Nominal Side Lobe Windowing Example

55 60

55

60

2-21

Chapter 2 Connectors and Controls

-5

-1 0

-1 5

-2 0

-2 5

R e tu rn Lo s s (d B )

-3 0

-3 5

-4 0

-4 5

-5 0

D istance To Fault

510

15

35 40 45

Feet

20 25 30

Figure 2-6. Low Side Lobe Windowing Example

D istance To Fault

-5

-1 0

-1 5

-2 0

-2 5

R e tu rn Lo s s (d B )

-3 0

-3 5

-4 0

-4 5

-5 0

5

20 25

15

10

30 35 404550

Feet

Figure 2-7. Minimum Side Lobe Windowing Example

2-22

50 55

60

55 60

Chapter 2 Connectors and Controls

Markers
Menu

Provides for setting marker values. Selected fre­quency marker or distance marker values may be
changed using the keypad or Up/Down Arrow key.

Pressing the MARKER key causes the soft keys, be­low, to be displayed and the corresponding values to
be shown in the message area.

M1

M1 — Selects the M1 marker parameter, display-

q

M2

M3

M4

MAIN

ing either frequency or distance and the corre­sponding SWR, RL, CL, or IL/IG, and opens the
Markers 2nd Level Menu, described on page 2-24.

q M2 — Selects the M2 marker parameter, display-

ing either frequency or distance and the corre­sponding SWR, RL, CL, or IL/IG, and opens the
Markers 2nd Level Menu, described on page 2-24.

q

M3 — Selects the M3 marker parameter, display­ing either frequency or distance and the corre­sponding SWR, RL, CL, or IL/IG, and opens the
Markers 2nd Level Menu, described on page 2-24.

q

M4 — Selects the M4 marker parameter, display­ing either frequency or distance and the corre­sponding SWR, RL, CL, or IL/IG, and opens the
Markers 2nd Level Menu, described on page 2-24.

q

MAIN — Returns to the Main Menu.

2-23

Chapter 2 Connectors and Controls

Markers
Menu
(2nd Level)

Provides for turning the selected marker on and off
and for setting marker values. Selected frequency
marker and distance marker values can be changed
using the keypad or Up/Down Arrow key.

Choosing M1 causes the soft keys, below, to be dis­played and the corresponding values to be shown in
the message area.

ON/OFF

EDIT M ORE

BACK

Choosing M2, M3,orM4 causes the soft keys, be-
low, to be displayed and the corresponding values to
be shown in the message area.

ON/OFF

q ON/OFF — Turns the selected marker on or off.

q

EDIT — Opens the selected marker parameter for

EDIT

DELTA

MORE

BACK

data entry. Press ENTER when data entry is com­plete.

q

DELTA — Displays delta SWR, RL, CL, or IL/IG
as well as delta frequency or distance for the se­lected marker with respect to the M1 marker.

2-24

q

MORE — Selects the Markers 3rd Level Menu,
described on page 2-25.

q

BACK — Returns to Main Markers Menu.

Chapter 2 Connectors and Controls

Markers
Menu
(3rd Level)

Provides selections for placing the selected marker at
the frequency or distance with the maximum or mini­mum SWR, RL CL, or IL/IG.

Choosing MORE causes the soft keys, below, to be
displayed and the corresponding values to be shown
in the message area.

PEAK

PEAK — Places the selected marker at the fre-

q

VA LLEY

BACK

MKRS

quency or distance with the maximum SWR, RL,
CL, or IL/IG. Each time the PEAK soft key is
pressed, the marker will find the next peak value.
Up to to 5 consecutive peak values can be se­lected.

q VALLEY — Places the selected marker at the fre-

quency or distance with the minimum SWR, RL,
CL,or IL/IG.

q

BACK — Returns to the Markers 2nd Level
Menu.

q

MKRS — Returns to the Main Markers Menu.

2-25

Chapter 2 Connectors and Controls

Determining Remaining Battery
Life

When the AC-DC adapter is disengaged from the Site Master, a bat­tery indicator symbol is continuously displayed at the top-right corner
of the display (Figure 2-8). A totally black bar indicates a fully charged
battery.

R em aining B attery Life
Sliding G auge Sym bol

0

CAL ON

+6 dBm

LIM O N

30

900.0 1100.0FREQ (M Hz)

M 1 = 30.75 dB A T 1000 M H z
M 2 = 21.10 dB A T 1050 M H z

MODE

Figure 2-8. Battery Monitor

FREQ

2-26

RETURN LOSS

SCALE

OPT

Chapter 2 Connectors and Controls

Printing

Printing is accomplished with any of the following printers: the Seiko
DPU-411 thermal printer, the Seiko DPU-414 thermal printer, or the
Hewlett Packard DeskJet 340 ink jet printer. Figure 2-9 shows a setup
diagram for these two types of printers.

Printer Switch Settings

Set the switches, SW1 and SW2, on the Seiko DPU-411 thermal printer
as follows:

Switch 1 2 3 4 5 6 7 8

SW1 OFF ON ON ON ON OFF ON ON
SW2 ON ON ON OFF OFF OFF

Set the switches, SW1, SW2, and SW3, on the Seiko DPU-414 thermal
printer as follows:

Switch

SW1 OFF ON ON ON ON OFF ON ON
SW2 ON ON ON ON ON ON ON OFF
SW3 ON ON ON OFF OFF ON ON ON

1 2 3 4 5 6 7 8

Set the switches on the serial-to-parallel interface cable to the HP Desk­jet 340 ink jet printer as follows:

SW1

OFF ON OFF OFF OFF OFF OFF OFF

SW2 SW3 SW4 SW5 SW6 SW7 SW8

2-27

Chapter 2 Connectors and Controls

Printing a Screen

Step 1. Connect the printer as shown in Figure 2-9.
Step 2. Obtain a SWR, RL, CL, Insertion Loss/Insertion

Gain, or Distance-to-Fault measurement display.

Step 3.

Select the printer using the B7 soft key from the
Option Sub-Menu (page 2-16).

Step 4.

Site Master S251A

Figure 2-9. Printer Setup

Press the PRINT key (Figure 2-1. page 2-0).

XXX

2-28

Chapter 2 Connectors and Controls

Symbols

Table 2-1 provides a listing of the symbols used as condition indicators
on the LCD display.

Self Test

At turn-on, the Site Master runs through a series of quick checks to en­sure the system is functioning properly. Note that the battery voltage
and temperature are displayed in the lower left corner below the self
test message. If the battery is low, or if the ambient temperature is not
within the specified operational range, Self Test will fail. If Self Test
fails AND the battery is fully charged AND the Site Master is within
the specified operating range, call your Anritsu Service Center.

Error Codes

Self Test Errors

A listing of Self Test Error messages is given in Table 2-2.

Range Errors

A listing of Range Error messages is given in Table 2-3.

Replacing the Battery

Replacing the battery is the only recommended field-level maintenance
action. If your battery fails, contact your Anritsu Sales Office or Serv­ice Center. Table 1-2 (page 2-11) provides a listing of current service
centers.

2-29

Chapter 2 Connectors and Controls

Table 2-1. LCD Icon Symbols

Icon Symbol

Site Master is in Hold or Power Conservation

mode. To resume sweeping, press the
RUN/HOLD key. After 10 minutes without a
key press, the Site Master will automatically
enter into its power conservation mode.

Indicates internal data processing.

6

Lock fail indication. Check battery. (If Site
Master fails to lock with a fully charged bat-

tery, call your Anritsu Service Center.)
Processor timeout failure. Symbol appears at

the frequency that causes an input RF overload;
it then disappears as the sweep continues past
that point.

When calibration is performed, the Site Master
stores the ambient temperature. If the tempera­ture drifts outside the specified range, this indi­cator will flash. A recalibration at the current
temperature is recommended.

2-30

Indicates the remaining charge on the battery.
The inner white rectangle grows longer as the
battery charge depletes.

Table 2-2. Self Test Error Messages

Chapter 2 Connectors and Controls

Error Message

BATTERY LOW

EXTERNAL
POWER LOW

PLL FAILED

INTEGRATOR
FAILED

EEPROM R/W
FAILED

OUT OF TEMP.
RANGE

Note: A listing of current Anritsu service centers is given in Table 1-2, page 1-11.

Battery voltage is less than 12.5 volts.
Charge battery. If condition persists, call

your Anritsu Service Center.

External supply voltage is less than 12.5
volts. Call your Anritsu Service Center

Phase-locked loops failed to lock. Charge
battery. If condition persists with a fully

charged battery, call your Anritsu
Service Center

Integration circuit could not charge to a
valid level. Charge battery. If condition per-

sists with a fully charged battery, call your
Anritsu Service Center.

Non-volatile memory system has failed.

Call your Anritsu Service Center.

Ambient temperature is not within the
specified operating range. Return tempera­ture to specified operating range. If condi-

tion persists, call your Anritsu Service
Center.

Description

2-31

Chapter 2 Connectors and Controls

Table 2-3. Range Error Messages (1 of 3)

Error Message

RANGE
ERROR:F1 > F2

RANGE
ERROR:D1 > D2

RANGE
ERROR:D2 >
DMax=xx.x ft (m)

RANGE ERROR:
TOP<=BOTTOM

RANGE ERROR:
TOP>=BOTTOM

CAL
INCOMPLETE

CAL VALID FROM:
xxxx.x to
xxxx.x MHz

Description

The start (F1) frequency is greater than the
stop (F2) frequency.

The start (D1) distance is greater than the
stop (D2) distance.

The stop distance (D2) exceeds the maxi­mum unaliased range. This range is deter­mined by the frequency span, number of
points, and relative propagation velocity:

Maximum Unaliased Range

Where: F1 is start frequency

F2 is stop frequency
Vfis relative propagation velocity

maximum unaliased range is in meters
Refer to Figure A-1, page A-4, for a plot of maximum
range versus frequency span.

=

8

´

( . )( )( )1 5 10 129

FF

-

21

V

f

The SWR scale parameter top value is less
than or equal to its bottom value.

The RL scale parameter top value is greater
than or equal to its bottom value.

A complete open, short, and load calibration
must be performed before calibration can be
turned on.

The calibration was performed at a
frequency range that is different from the
current range.

2-32

Chapter 2 Connectors and Controls

Table 2-3. Range Error Messages (2 of 3)

Error Message

DIST REQUIRES
F1<F2

DIST REQUIRES
CAL

NO STORED
SWEEP AT THIS
LOCATION

USE OPTIONS
MENU TO
SELECT A
PRINTER

DISTANCE AND
CABLE
INSERTION LOSS
MODE ARE
INCOMPATIBLE

CANNOT ZERO
NO DETECTOR
INSTALLED

CANNOT ZERO
INPUT SIGNAL
TOO HIGH

POWER MONITOR
OPTION NOT
INSTALLED

Valid distance to fault plots require a non­zero frequency span.

Distance-to-fault measurements do not pro­vide usable data with CAL OFF.

Attempting to recall a display from a loca­tion that has not been previously written to.
That is, the location does not contain stored
sweep.

Attempting to print a display with no printer
selected. Select a printer, then retry.

DTF measurements only display RL or
SWR versus distance.

Attempting to perform a Power Monitor
zero adjust function with no RF detector
connected to the Site Master.

Attempting to perform a Power Monitor
zero adjust function with an input of greater
than –20 dBm.

Attempting to enter Power Monitor mode
with no option 5 installed.

Description

2-33

Chapter 2 Connectors and Controls

Table 2-3. Range Error Messages (3 of 3)

Error Message

BIAS TEE OPTION
NOT INSTALLED

BIAS TEE ONLY
VALID WHEN
EXTERNAL
POWER IS ON

EXCESS POWER
DETECTED IN
TRANSMISSION
MODE

TRACE/2 IS
ONLY VALID
IN INSERTION
GAIN/LOSS MODE

STORED SWEEP
INCOMPATIBLE
WITH CURRENT
SWEEP

Attempting to use Bias Tee function without
Option 10 installed.

Attempting to use Bias Tee function without
external power connected to the battery re­charger port.

Exceeded power gain limit. To resolve,
lower REFL output power or change the
measurement mode to Insertion Gain mode
and recalibrate.

Attempting to use Trace/2 Math function in
incorrect mode

Attempting to do Trace Math functions with
different mode sweeps.

Description

2-34

Chapter 2 Connectors and Controls

Using the Soft Carrying Case

The soft carrying case has been designed such that the strap can be un­snapped to allow the case to be easily oriented horizontally; thus allow­ing the Site Master controls to be more easily accessed (Figure 2-10).

Figure 2-10. Using the Soft Carrying Case

2 - 35/2-36

Chapter 3
Operation

Introduction

This chapter provides a description of the Site Master operating func­tions and examples of frequency domain and distance domain mea­surements.

Operating Functions

Site Master operation is divided into five functional areas: common
functions, frequency domain, distance domain, power monitor, and RF
source.

• Common functions are options, markers, and scale functions

that are common to both frequency domain and distance do­main measurements.

•

Frequency domain measurements consist of Standing Wave
Ratio (SWR), Return Loss (RL), Cable Loss (CL), and Inser­tion Loss/Insertion Gain (IL/IG) made over a selectable fre­quency range. SWR and RL characterize the magnitude of
reflections present in a device or transmission line. CL meas­urements display the insertion loss of a transmission line over
frequency. IL/IG measurements display the gain or loss pres­ent in a device and/or transmission line over frequency. IL has
an output power level of +6 dBm; IG has an output power
level of –30 dBm.

3

3-1

Chapter 3 Operation

Distance domain measurements—commonly known as

•

distance-to-fault (DTF)—are made over a selectable distance
range. They include RL or SWR, but they also return informa­tion that can help locate discontinuities in a transmission line.
CL cannot be measured in the distance domain.

Power monitor measurements can be either absolute or rela-

•

tive to some base power level, and can be displayed in either
dBm or Watts. To allow measurement and display of power
levels above the unit's specified input, the user may attenuate
the signal and enter the corresponding offset. The offset is
added to the measured input power prior to display. Finally, a
zero adjust function is provided to allow substraction of an in­herent “noise” level prior to display.

• RF source provides a selectable CW signal with +6 dBm or

–30 dBm output power at the Refl port.

CAUTION: The measurement system MUST be cali­brated at the ambient temperature prior to making a
measurement. You must calibrate when the setup fre­quency is changed. Calibrations and setups are not
independent; they are tied together. The instrument
can store up to four calibration/setups. When you re­call a stored setup, perform a new calibration only if
the test setup has been altered.

3-2

Chapter 3 Operation

Making Common Function Selections

Common functions are options, marker, and scale functions that are
common to both frequency- and distance-domain measurements.

Applying Power

Step 1.
Step 2.

Turn the Site Master on using the ON/OFF key.
Observe that the Site Master opening screen appears

and that it performs a self test. The firmware version
and model number are shown in the opening screen.

Setting Options

Step 3.

Step 4.

Press the OPT soft key, from the Main Menu
(page 2-9).

Accept or change the settings of the B1 through B8
options. Refer to pages 2-15 and 2-16 for a descrip­tion of each option.

Setting Markers

Step 5.
Step 6. Accept or change the settings. To change, press the

Press the MARKER key on the keypad.

applicable M1, M2, M3,orM4 soft key and:

q

Press the ON/OFF soft key to turn the selected
marker on, if off.

q

Press the EDIT soft key to edit the marker. Use
the keypad or Up/Down Arrow key to enter a
numeric value. Press ENTER when the data entry
is complete.

3-3

Chapter 3 Operation

Refer to pages 2-23 thru 2-25 for a description of
marker functions.

Setting Scale/Limits

Step 7.

Step 8. Accept or change the settings. To change, press the

Press the SCALE key on the keypad or the SCALE
soft key, from the Main Menu.

applicable TOP, BOTTOM,orLIMIT soft key and
either:

Enter a numeric value from the keypad and press

q

the ENTER key.

q Or press the Up/Down Arrow key and press the

ENTER key.

3-4

Chapter 3 Operation

Return Loss (SWR) and Cable Loss (One
Port) Measurement

The following frequency domain measurement is an example of a
Return Loss (or Standing Wave Ratio) and Cable Loss measurement
made over a selectable frequency range.

Required Equipment

Site Master Model S251A

•

Precision Open/Short, Anritsu 22N50

•

• Precision Load, Anritsu SM/PL

Test Port Extension Cable, Anritsu 15NNF50-1.5A

•

Device-Under-Test Specification

Type Typical Loss @1.5m V

0.40 dB @800 MHz

15NNF50-1.5A

0.45 dB @900 MHz

0.60 dB @1710 MHz

0.70 dB @1990 MHz

Procedure

Step 1.

Press the ON/OFF key on the Site Master.

Selecting the Measurement Mode

Step 2.

Press the MODE soft key.

g

0.86

3-5

Chapter 3 Operation

Step 3. Use the Up/Down Arrow key to scroll to Return Loss

(or SWR). Press the ENTER key to select Return
Loss (or SWR) measurement mode.

Calibration

Measurement

Site Master S251A

Figure 3-1. One-Port Calibration/Measurement Setup

3-6

Selecting the Frequency Range

Chapter 3 Operation

Step 4.
Step 5.
Step 6. Enter 8,0,0 using the keypad or Up/Down Arrow

Step 7.
Step 8. Enter 2,0,0,0 using the keypad or Up/Down Arrow

Press the FREQ soft key.
Press the F1 soft key.

key. Press ENTER to set F1 to 800 MHz.
Press the F2 soft key.

key. Press ENTER to set F2 to 2000 MHz.

Performing a Calibration

Step 9.

Step 10. Connect the Open to the REFL test port as shown in

Step 11. When the measurement is complete, disconnect the

Step 12. When the measurement is complete, disconnect the

Press the START CAL key. Follow the ensuing in­structions that appear in the message area.

Figure 3-1. Press the ENTER key.

Open and connect the Short to the REFL test port.
Press the ENTER key.

Short and connect the Load to the REFL test port.
Press the ENTER key.

Figures 3-2 and 3-3 depict typical valid calibration
measurements with Load attached.

3-7

Chapter 3 Operation

Figure 3-2. Return Loss Measurement Mode Calibration Results

Figure 3-3. SWR Measurement Mode Calibration Results

3-8

Chapter 3 Operation

Cable Return Loss Measurement

Step 13. Disconnect the Load and connect the test port exten-

sion cable to the REFL test port. Connect the Load to
the open end of the test port extension cable as
shown in Figure 3-1.

Setting the Limit Line

Step 14.

Step 15.

Press the SCALE key to call up the Scale Menu
(page 2-14).

Press the LIMIT soft key and enter 2,7 using the
keypad or Up/Down Arrow key. Press ENTER to set
the limit line to 27.

Setting the Markers

Step 16.

Step 17.

Step 18.

Step 19. Repeat steps 17 and 18 for markers M2, M3, and M4.

Press the MARKER key to call up the Markers menu
(page 2-23).

Press the M1 soft key to select the M1 marker func­tion. Press EDIT soft key and enter 8, 2, 4 using the
keypad or Up/Down Arrow key. Press ENTER to set
M1 to 824 MHz. (Note: pressing the ON/OFF soft
key activates or deactivates the M1 marker function.)

Press the BACK soft key to return to the Markers
menu.

Set M2 to 960 MHz, M3 to 1710 MHz, and M4 to
1990 Mhz. (Figures 3-4 and 3-5 depict the cable re­turn loss measurement.)

3-9

Chapter 3 Operation

Figure 3-4. Cable Return Loss Measurement Results

Figure 3-5. Cable SWR Measurement Results

3-10

Saving Display to Memory

Chapter 3 Operation

Step 20.

Press the SAVE DISPLAY key to save the return
loss measurement. Press ENTER to save to the cur­rent empty memory location or use the keypad or the
Up/Down Arrow key to select another memory loca­tion. Press the ENTER key to implement. Use the
keypad or the Up/Down Arrow key to manually enter
the Time, Date, and Trace Designator for the save
display.

Cable Loss Measurement

Step 21. Disconnect the Load and connect the Short to the end

of the test port extension cable (Figure 3-1). Observe
the displayed measurement.

Step 22.

Press the BACK soft key, the MAIN soft key, and
the MODE soft key to activate the measurement
mode. Use the Up/Down Arrow key to select
CABLE LOSS-ONE PORT. Press the ENTER key
to indicate selection.

Scaling the Display

Step 23.

Press the SCALE key and BOTTOM soft key. Enter
1 using the keypad or Up/Down Arrow key and press
the ENTER key to change the marker value to 1 dB.

or, press the AUTO SCALE key to automatically
scale the display.

Figure 3-6 shows the cable loss measurement

3-11

Chapter 3 Operation

Saving Display to Memory

Step 24. Press the SAVE DISPLAY key to save the cable

loss measurement to the next memory location (see
step 20 for details).

Figure 3-6. Cable Loss Measurement Results

3-12

Chapter 3 Operation

DTF Measurement

The following distance domain measurement is an example of a Dis­tance-to-Fault (DTF) measurement over a selectable distance range.

Required Equipment

Site Master Model S251A

•

Precision Open/Short, Anritsu 22N50

•

Precision Load, Anritsu SM/PL

•

Test Port Extension Cable, Anritsu 15NNF50-1.5A

•

Device-Under-Test Specification

Type Typical Loss @1.5m V

0.40 dB @800 MHz

15NNF50-1.5A

0.45 dB @900 MHz

0.60 dB @1710 MHz

0.70 dB @1990 MHz

Procedure

Step 1.

Press the ON/OFF key on the Site Master.

DTF Parameters Setup

Step 2.
Step 3. Use the Up/Down Arrow key to scroll to DTF -

Press the MODE soft key.

Return Loss (or DTF - SWR). Press the ENTER key
to select DTF in return loss (or SWR) measurement
mode.

g

0.86

3-13

Chapter 3 Operation

Step 4. In the DTF parameters table, scroll to D2 using the

Up/Down Arrow key, then press ENTER to select
cable length.

NOTE:
Where CAL ON is indicated on the
the

DIST

soft key, then the

vate the DTF parameters table.

Step 5. Enter 2 using the keypad or Up/Down Arrow key.

Press ENTER to set D2 to 2 meters.

Step 6. Use the Up/Down Arrow key to scroll to CF and

press ENTER to select center frequency.

Step 7. Enter 1,4, 0, 0 using the keypad or Up/Down Arrow

key. Press ENTER to set CF to 1400 MHz.

NOTE:
The reason CF = 1562.5 MHz rather than 1400 MHz
is that the maximum resolution distance, given the
maximum frequency bandwidth of the
(625 to 2500 Mhz), is 8.9 meters. Therefore, D2 of
less than 8.9 meters will have a CF = 1562.5 MHz.

DTF AID

Site Master

soft key to acti-

Site Master

, press

3-14

Step 8. Use the Up/Down Arrow key to scroll to PROP VEL

and press ENTER to customize cable propagation
velocity.

Chapter 3 Operation

Step 9. Enter ., 8, 6 using the keypad or Up/Down Arrow

key. Press ENTER to set PROP VEL value to 0.86.

Step 10. Use the Up/Down Arrow key to scroll to LOSS and

press ENTER to customize cable loss.

Step 11. Enter ., 3 using the keypad or Up/Down Arrow key.

Press ENTER to set LOSS value to 0.3.

Performing a Calibration

Step 12.

Step 13. Connect the Open to the REFL test port as shown in

Step 14. When the measurement is complete, disconnect the

Step 15. When the measurement is complete, disconnect the

Press ENTER to select EXIT - START CALIBRA­TION (or EXIT - START RE-CALIBRATION) to
start calibration. Follow the ensuing instructions that
appear in the message area.

Figure 3-1. Press the ENTER key.

Open and connect the Short to the REFL test port.
Press the ENTER key.

Short and connect the Load to the REFL test port.
Press the ENTER key.

3-15

Chapter 3 Operation

DTF Measurement (Determining the Length of the
Cable)

Step 16. Disconnect the Load and connect the test port exten-

sion cable to the REFL test port. Connect the Short
(or Open) to the open end of the test port extension
cable as shown in Figure 3-1.

Optional: Press the AUTO SCALE key to optimize
the amplitude scale.

3-16

Step 17.

Step 18.

Step 19.

Press the MARKER key and the M1 soft key to
select the marker 1 function. (Note: pressing the
ON/OFF soft key actvates or deactivates the M1
marker function.)

Press the MORE soft key, then the PEAK soft key
to find the cable length. Press the MKRS soft key to
return to the previous menu.

Figures 3-7 and 3-8 depict the DTF (cable length)
measurement results.

Press the SAVE DISPLAY key to save the DTF
measurement. Press ENTER to save to the current
empty memory location or use the keypad or the
Up/Down Arrow key to select another memory loca­tion. Press the ENTER key to implement. Use the
keypad or the Up/Down Arrow key to manually enter
the Time, Date, and Trace Designator for the save
display.

Chapter 3 Operation

Figure 3-7. DTF-Return Loss Measurement Results (Cable Length)

Figure 3-8. DTF-SWR Measurement Results (Cable Length)

3-17

Chapter 3 Operation

DTF Measurement (Determining the Quality of the
Cable)

Step 20. Disconnect the Short (or Open) and connect the

Load to the test port extension cable (Figure 3-1).
Optional: Press the AUTO SCALE key to optimize

the amplitude scale.

Step 21.

Step 22.

Step 23.

Press the MARKER key and the M2 soft key to se­lect the marker 2 function. (Note: pressing the
ON/OFF soft key actvates or deactivates the M2
marker function.)

Press the MORE soft key, then the PEAK soft key
to find the worst case average return loss with respect
to distance. Press the MKRS soft key to return to the
previous menu.

Figures 3-9 and 3-10 show the DTF (cable quality)
measurement results.

Press the SAVE DISPLAY key to save the DTF
measurement to the next memory location (see step
19 for details).

3-18

Chapter 3 Operation

Figure 3-9. DTF-Return Loss Measurement Results (Cable Quality)

Figure 3-10. DTF-SWR Measurement Results (Cable Quality)

3-19

Chapter 3 Operation

Insertion Gain (Amplifier) Measurement

The following frequency domain measurement is an example of a In­sertion Gain (Amplifier) measurement over a selectable frequency
range.

Required Equipment

Site Master Model S251A

•

(2) Precision 7/16(f) Open/Short/Load, Anritsu 2000-768

•

(2) Test Port Extension Cable, Anritsu 15NDF50-1.5A

•

• 7/16(f) Adapter, Anritsu 510-97

Tower Mount Amplifier, Ericsson A57001HQ85

•

Device-Under-Test Specification

Type Frequency Range Gain (Typical)

TMA 1880 to 1910 MHz 12 dB

Procedure

Step 1.

Press the ON/OFF key on the Site Master.

Insertion Gain Mode Selection

Step 2.
Step 3. Use the Up/Down Arrow key to scroll to INSER-

Press the MODE soft key.

TION GAIN (–30 dBm). Press the ENTER key to
select insertion gain measurement mode.

3-20

Selecting the Frequency Range

Chapter 3 Operation

Step 4.
Step 5.
Step 6. Enter 1, 8, 4, 0 using the keypad or Up/Down Arrow

Step 7.
Step 8. Enter 2, 0 ,0, 0 using the keypad or Up/Down Arrow

Press the FREQ soft key.
Press the F1 soft key.

key. Press ENTER to set F1 to 1840 MHz.
Press the F2 soft key.

key. Press ENTER to set F2 to 2000 MHz.

Performing a Calibration

Step 9. Connect the test port extension cables to the REFL

and TRANS test ports as shown in Figure 3-11.

Step 10.

Step 11. Connect the Open to the open end of the REFL test

Step 12. When the measurement is complete, disconnect the

Step 13. When the measurement is complete, disconnect the

Press the START CAL key. Follow the ensuing in­structions that appear in the message area.

port extension cable. Press the ENTER key.

Open and connect the Short to the REFL test port
extension. Press the ENTER key.

Short and connect the Load to the REFL test port ex­tension cable. Press the ENTER key.

Step 14. When the measurement is complete, connect the

Load to the open end of the TRANS test port exten­sion cable. Press the ENTER key.

3-21

Chapter 3 Operation

Site Master S251A

Figure 3-11. Two-Port Measurement Calibration Setup

3-22

Chapter 3 Operation

Step 15. When the measurement is complete, disconnect both

Loads from the test port extension cables and con­nect the 7/16(f) adapter to the open ends of the test
port extension cables to complete a through path
from the REFL to TRANS test port. Press the
ENTER key.

When the measurement is complete the results
should be similar to those shown in Figure 3-12.

Figure 3-12. Two-Port Measurement Calibration Results

3-23

Chapter 3 Operation

Amplifier Gain Measurement

Step 16. Disconnect the 7/16(f) adapter. The resulting display

should be similar to Figure 3-13.

Figure 3-13. Measurement Display before Amplifier Connection

Step 17. Connect the amplifier to the test port extension ca-

bles as shown in Figure 3-14.

Setting the Markers

Step 18.

Press the MARKER key to call up the Markers menu
(page 2-23).

3-24

Site Master S251A

Chapter 3 Operation

PCS Amp

Tx\RF

Ant

Figure 3-14. Amplifier Gain Measurement Setup

3-25

Chapter 3 Operation

Step 19.

Step 20.

Step 21. Repeat steps 19 and 20 for markers M2, M3, and M4.

Press the M1 soft key to select the M1 marker func­tion. Press the EDIT soft key and enter 1, 8, 8, 0 us­ing the keypad or Up/Down Arrow key. Press
ENTER to set M1 to 1880 MHz. (Note: Pressing the
ON/OFF soft key activates or deactivates the M1
marker function.)

Press the BACK soft key to return to the Markers
menu.

Set M2 to 1910 MHz, M3 to 1960 MHz, and M4 to
1990 MHz.

Observe the bypass condition (Figure 3-15).

Figure 3-15. Measurement Display Showing Bypass Condition

3-26

Activating the Bias Tee

Chapter 3 Operation

Step 22.
Step 23.

NOTE:
The
the battery charger must be connected for the bias
tee to activate.

Press the MAIN soft key to return to the Main menu.
Press the OPT soft key, then the B3 soft key to acti-

vate the bias tee.

Site Master

must have Option 10 installed and

Scaling the Display

Step 24.

Press the AUTO SCALE key to narrow the display
range.

Observe the display of amplifier gain performance
(Figure 3-16 on the following page)

3-27

Chapter 3 Operation

Figure 3-16. Measurement Display of Amplifier Gain

Saving Display to Memory

3-28

Step 25.

Press the SAVE DISPLAY key to save the amplifier
gain measurement. Press ENTER to save to the cur­rent empty memory location or use the keypad or the
Up/Down Arrow key to select another memory loca­tion. Press the ENTER key to implement. Use the
keypad or the Up/Down Arrow key to manually enter
the Time, Date, and Trace Designator for the save
display.

Chapter 3 Operation

Making Power Measurements

Power measurement is accomplished using a broadband (1 Mhz to
3 Ghz) RF detector, P/N 5400-71N50. The power monitor displays the
measured power in dBm or Watts.

Entering Power Monitor Mode

Step 1.

Step 2. Use the Up/Down Arrow key to scroll to POWER

Press the MODE soft key, from the Main menu
(page 2-9).

MONITOR. Press ENTER to select power monitor
mode.

Zeroing the Power Monitor

Step 3.

With no power applied to the DUT, press the ZERO
soft key from the Power menu (page 2-11). Wait a
few seconds while the Site Master accumulates sam­ples of the quiescent power level. When complete,
ZERO ADJ: ON is displayed in the message area.

Measuring High Input Power Levels

Step 4. Insert an attenuator between the DUT and the RF de-

tector, sufficient to insure that the input power to the
Site Master is no greater the 20 dBm.

Step 5.
Step 6. Enter the attenuation in dB using the keypad. Press

Press the OFFSET soft key.

ENTER to complete the entry. The message area will
show OFFSET is ON along with the entered value in
dB.

3-29

Chapter 3 Operation

Displaying Power in dBm and Watts

Step 7.

Press the UNITS soft key to display power in Watts.

Displaying Relative Power

Step 8. With the desired base power level input to the Site

Master, press the REL soft key. The message area
will show REL: ON and the power reading will indi­cate 100%.

Step 9.

Press the UNITS soft key to display power in dBm.
Since REL is ON, the power reading will be in dBr,
relative to the base power level.

3-30

Chapter 3 Operation

RF Source Operation

RF source allows the user to generate a single CW frequency with
+6 dBm or –30 dBm output power within the instrument’s operating
frequency band.

Generating a CW Frequency

Step 1.

Step 2. Use the Up/Down Arrow key to scroll to RF

Step 3.

Step 4. Enter the desired numerical value using the keypad

Step 5.

Step 6.

Press the MODE soft key, from the Main menu
(page 2-9).

SOURCE. Press ENTER to select RF source mode.
Press the FREQ soft key, from the Main menu (page

2-12).

or the Up/Down Arrow key. Press ENTER when data
entry is complete.

Press the POWER soft key to toggle between
+6 dBm and –30 dBm.

Press the MAIN soft key to return to the Main menu.

3-31/3-32

Chapter 4
Software Tools
Program

Description

The Site Master Software Tools program provides the means for trans­ferring the measured trace, along with any applied markers and/or a
limit, to the screen of an MS-DOS based personal computer (PC) run­ning Windows, Windows for Workgroups 3.xx, Windows NT, or Win­dows 95.

Requirements

The Site Master Software Tools program is a standard Windows 3.x
program and will run on any computer that will run Windows, Win­dows for Workgroups 3.xx, Windows NT, or Windows 95. Typically,
this means having a PC with the following characteristics:

•

386 or better microprocessor running enhanced mode (386DX,
33 MHz or better, recommended).

•

8 MBytes of memory, minimum.

4

•

Hard Disk Drive, with approximately 3 MBytes of available
space.

4-1

Chapter 4 Software Tools Program

Communication Port Setting

The Site Master Software Tools communicates with the Site Master
through a standard COM port on the PC. It is important that your Win­dows COM port settings conform to the actual hardware settings. Table
3-1 provides a listing of standard COM port settings for most IBM
AT-Compatible computers.

Table 3-1. Standard COM Port Settings

Port IRQ Address

COM1 4 3F8
COM2 3 2F8
COM3 4 3E8
COM4 3 2E8

Since various add-in devices such as sound cards, modems, and net­work cards use IRQ (Interrupts), it is possible that your computer has
non-standard COM port settings. Please consult your computer vendor
for COM port address and IRQ information.

Changing COM Port Settings–Windows 3.1

Refer to Figure 3-1 while performing the following procedure.

Step 1.
Step 2.

Step 3. Click on the icon for the COM Port whose communi-

Open the Windows Control Panel.
Double click on the Ports icon. The Ports dialog box

appears.

cations settings you wish to specify, then click the
Settings... button. The Settings dialog box appears.

4-2

Chapter 4 Software Tools Program

Figure 3-1. Windows 3.1 COM Port Setting Dialog Boxes

Step 4. Change to the following settings if necessary:

Baud Rate: 9600
Data Bits: 8
Parity: None
Stop Bits: 1
Flow Control: None

Step 5.

Step 6.

Click on the Advanced... button. At the Advanced
Settings dialog box verify the COM Port Base
Address and IRQ. Click OK when done.

Click OK again and then Close to close the COM
Port Setting Windows.

4-3

Chapter 4 Software Tools Program

Note:
If you changed the COM Port Base Address and/or
IRQ, you will need to restart Windows.

Figure 3-2. Windows 95 COM Port Setting Dialog Boxes

Changing COM Port Settings–Windows 95

Refer to Figure 3-2 while performing the following procedure.

Step 1.
Step 2.

Step 3.

Open the Windows Control Panel.
Double click on the SYSTEM icon. The System

Properties window appears.
Select Device Manager. The Device List appears.

4-4

Chapter 4 Software Tools Program

Step 4.

Step 5.

NOTE:
If Windows doesn't show any available COM Ports,
consult your computer manufacturer.

Step 6.

Step 7.

Step 8.

Double click on the item Ports (COM & LPT) in the
device list.

Double click on the Communications Port you want
to set. The Communications Port Properties window
appears.

Choose Port Settings, then change to the following
settings if necessary.

Baud Rate: 9600
Data Bits: 8
Parity: None
Stop Bits: 1
Flow Control: None

Choose Resource and verify the COM Port Base
Address and IRQ. Click OK when done.

Click OK again to close the System Properties
window.

Note:
If you changed the COM Port Base Address and/or
IRQ, you will need to restart Windows.

4-5

Chapter 4 Software Tools Program

Software Installation

The Site Master Software Tools program is a conventional Microsoft
Windows 3.x program. Installation is similar to all other such pro­grams. For users new to Windows 3.x, a detailed procedure is given
below.

Step 1.

Step 2. In the Windows Program Manager, pull down the

Step 3. Type A: (or B:)\SETUP, when the dialog box ap-

Step 4. Press the Enter key to select the default directory,

Step 5. When the Setup program prompts, select “OK” or

NOTE: The Setup routine will create a new Program
Manager Group named
This group will contain three file icons, “Read Me,”
“Site Master Help,” and “Site Master Software Tools.”

Insert the Anritsu Site Master Software Tools For
Windows disk in floppy drive A:\ or B:\.

File menu and select Run. (For Windows 95 users,
select Run under the Start menu.)

pears.

C:\SITEMSTR, and begin the Setup routine.

press the Enter key to restart Windows.

“Site Master Software Tools”

.

4-6

Step 6. Double-click on the “Read Me” icon to read about (1)

recent changes that did not get into this manual
and/or (2) important features or problems that you
should know about.

Chapter 4 Software Tools Program

Serial Interface

Site Master S251A

Com port
(Program defaults to Com2)

Figure 3-3. Equipment Setup for Site Master Tools Operation

Step 7. Double-click on the “Site Master Help” icon to ac-

quaint yourself with the comprehensive on-line man­ual. This manual provides descriptive narrative for
the various program features and controls.

Step 8. Double-click on the “Site Master Software Tools ”

icon to open the Software Tools program.

Step 9. Click on Settings, in the top menu bar, and select

COM Port. Enter the appropriate COM port number
for the serial interface cable (null modem type).

4-7

Chapter 4 Software Tools Program

Plot Capture

Plots (traces) can be captured either singly from the Site Master dis­play or in multiples from one or more stored-display locations. Both
methods are described below.

The recommended method is the Capture Multiple Traces option in
the Capture pull-down menu. Using this method, you can download to
the Software Tools program in one operation all of the data residing in
the up-to-70 Stored Display memory locations. The downloaded traces
can be stored in a database or appear in cascade on the PC screen.

NOTE: Trace scale can be captured as per

ter

or as autoscale by the capture program. To select

per

Site Master

Default Plot Settings from the top menu bar and
pull-down menu.

or autoscaling, click on Settings and

Capture multiple to database

Step 1. Connect the supplied cable as shown in Figure 3-3.
Step 2.

Step 3.

Open the “Site Master Software Tools” group, in
the Windows Program Manager.
(Select the Windows pull-down menu from the Pro-

gram Manager menu bar, and select Site Master
Software Tools.)

Double-click on the “Site Master Software Tools”
icon to open the program.

4-8

Site Mas-

Chapter 4 Software Tools Program

Step 4.

Step 5. Follow the database instructions to download the

Step 6. Enter the number(s) of the stored-display memory lo-

Step 7. Observe that the “Acquiring Control” box appears on

Click on Capture, in the top menu bar, and select
Capture Multiple to Database from the drop-down

menu.

plot(s) to either a new database or an existing data­base.

cation(s) (1 to 50) from which you wish to store to
the database, and click “OK”.

the screen, then disappears as traces are automatically
acquired. The “Database” box appears when the
plot(s) has been completely captured into the data­base.

Capture multiple traces to PC screen

Step 1. Perform steps 1, 2, and 3 of the capture-multiple-to-

database procedure.

Step 2.

Click on “Capture Multiple Traces” icon or click
on Capture, in the top menu bar, and select Capture

Multiple Traces from the drop-down menu.

Step 3. Enter the number (or numbers) of the stored-display

memory location(s) (1 to 50) from which you wish to
display traces in Site Master Software Tools.

Step 4. Select “OK.”
Step 5. Observe that the “Acquiring Control” box appears on

the screen, then disappears as the traces are automati­cally acquired.

4-9

Chapter 4 Software Tools Program

Single trace capture

Step 1. Perform steps 1, 2, and 3 of the capture-multiple-to-

database procedure.

Step 2.

Step 3. Observe that a “Waiting for Data” box appears on the

Step 4.

NOTE: The

Click on “Start a Plot Capture” icon or click on
Capture, in the top menu bar, and select Start Cap­ture from the drop-down menu.

screen.
On the Site Master,

Capture a new trace and store it to a memory

q

location.

q Recall the stored plot to the screen.

q

Press the ENTER key (on the Site Master)to
start the screen capture.

ENTER

key on the Site Master must be
pressed while the PC screen shows “Waiting for
Data” for the transfer of information to be complete.

Step 5. On the PC, observe that the “Waiting for Data” box

disappears and the trace capture process begins.
Within a short time, the Site Master trace will ap­pear.

4-10

Chapter 4 Software Tools Program

Program Operation

The captured trace on the PC can be scaled and have its limit line,
markers, and properties changed. (Select Plot Properties under the
View menu to make these changes.) The operation of the various
menus that allow these operations to be accomplished is straightfor­ward. To read about the operation of the menus, refer to the on-line
help screens. They can be accessed from the Help menu, in the top
menu bar.

Fault Location Software

A captured RL or SWR trace can be transformed to a Distance to Fault
display. This is useful for determining the location of faults, connec­tions, and other discontinuities within the cable.

To transform a plot, select Fault Find from the Tools menu (or click
the toolbar button). A drop down menu will appear that asks you to
supply start and stop distances, along with propagation velocity and
insertion loss values. The table in Appendix A provides these values for
some of the more popular cables. The values are given at a nominal fre­quency of 1000 MHz. If values are needed at a different frequency, or
if you need the exact values for more accurate measurement, please
contact the cable manufacturer. Cables may be added to the list be edit­ing the cables.lst file and following the existing format. The dis­tance may be entered in feet or meters. Propagation velocity or
dielectric constant may be used. The units may be changed by selecting
Default Plot Settings under the Settings menu and changing “Distance
Units” or “Cable Units.”

After supplying the needed information and clicking OK, a new plot
will open showing cable match vs. distance.

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