Anritsu S251B User Manual

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Page 1

Site Master

Model S251B

Antenna and

Cable Analyzer

User's Guide

Hand-Held Tester for Transmission Lines

and other RF Components

Page 2

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 defec tive during the warranty period. Buyers shall prepay transportation charges for equipment returned to Anritsu for warranty repairs. Obligation is limited to the origi nal 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 op eration 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 ACKNOWLEDGMENTS

MS-DOS, Windows, Windows 95, Windows NT, and Windows 98 are registered trademarks of the Microsoft Corporation. Anritsu and Site Master 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.

September 1999 10580-00032 Copyright ã 1999 Anritsu Co. Revision: A

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Page 4

Chapter 1 - General Information 1-1

Introduction..................................1-1

Description ..................................1-1

Standard Accessories .............................1-1

Options ....................................1-2

Optional Accessories .............................1-2

Performance Specifications .........................1-3

Preventive Maintenance ...........................1-6

Calibration ..................................1-7

Annual Verification..............................1-7

Chapter 2 - Getting Started 2-1

Introduction..................................2-1

Charging a New Battery ...........................2-1

Charging the Battery in the Site Master .....................2-1

Charging the Battery in the Optional Charger..................2-1

Battery Charge Indicator ..........................2-2

Discharging the NiMH Battery .......................2-3

Battery Life ..................................2-3

Important Battery Information .......................2-3

Chapter 3 - Functions and Operations 3-1

Introduction..................................3-1

Front Panel Overview ............................3-1

Test Connector Panel.............................3-2

Keypad Controls ...............................3-3

Soft Keys ...................................3-6

Power Monitor Menu ............................3-20

Printing....................................3-21

Printing a Screen .................................3-21

Printer Switch Settings ..............................3-22

Symbols ...................................3-23

Self Test ...................................3-23

Error Codes .................................3-24

Self Test Errors ..................................3-24

Range Errors ...................................3-25

Using the Soft Carrying Case........................3-28

Chapter 4 - Measurements 4-1

Introduction..................................4-1

Measurement Functions ...........................4-1

Power On Procedure .............................4-2

Calibration Procedure ............................4-2

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Selecting the Frequency Range ..........................4-3

Performing a Calibration .............................4-3

Setting the Amplitude Scale ............................4-4

Saving the Setup ..................................4-4

Recalling a Setup ..................................4-4

Saving a Display to Memory ............................4-5

Recalling a Display From Memory ........................4-5

SWR (Return Loss) and Cable Loss Measurement ............4-9

Required Equipment ................................4-9

Device-Under-Test Specification..........................4-9

Procedure ......................................4-9

Selecting the Measurement Mode .........................4-9

Selecting the Frequency Range ..........................4-9

Performing a Calibration.............................4-10

SWR or Return Loss Measurement .......................4-11

Set the Amplitude Scale and Limit Line.....................4-11

Setting the Markers ................................4-13

Cable Loss Measurement ..........................4-14

Setting the Amplitude Scale ...........................4-14

Setting the Segment Limit LInes .........................4-14

DTF Measurement .............................4-16

Required Equipment ...............................4-16

Device-Under-Test Specification .........................4-16

Procedure .....................................4-16

Selecting the Measurement Mode ........................4-16

Performing a Calibration.............................4-17

DTF Measurement (Determining the Length of the Cable) ..........4-18

Setting the Amplitude Scale ...........................4-18

Setting the Marker ................................4-18

DTF Measurement (Determining the quality of the cable.) ..........4-20

Setting the Amplitude Scale ...........................4-20

Setting the Markers ................................4-20

Insertion Gain (Amplifier) Measurement .................4-22

Required Equipment ...............................4-22

Device-Under-Test Specification .........................4-22

Procedure .....................................4-22

Selecting the Measurement ............................4-22

Selecting the Frequency Range..........................4-22

Performing a Calibration.............................4-22

Amplifier Gain Measurement ..........................4-24

Setting the Markers ................................4-24

Activating the Bias Tee ..............................4-25

Setting the Amplitude Scale ...........................4-25

Making Power Measurements .......................4-27

Entering Power Monitor Mode..........................4-27

Zeroing the Power Monitor............................4-27

Measuring High Input Power Levels.......................4-27

Displaying Power in dBm and Watts ......................4-27

Displaying Relative Power ............................4-27

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Chapter 5 - Software Tools Program 5-1

Description ..................................5-1

Requirements .................................5-1

Communication Port Setting.........................5-1

Changing COM Port Settings–Windows 95/98/NT ...............5-1

Software Installation .............................5-3

Plot Capture..................................5-3

Capture multiple traces to a database.......................5-4

Capture single or multiple traces to PC screen..................5-4

Custom Cable List Uploading and Downloading..............5-5

Uploading a Cable List to the Site Master Custom Cable Table ........5-5

Downloading a Cable List from the Site Master Custom Cable Table .....5-5

Saving a Custom Cable List ............................5-5

Program Operation..............................5-6

Fault Location Software ...........................5-6

Smith Chart Software ............................5-6

Saving a Plot as a Windows Metafile or as a Spreadsheet File ......5-7

Pasting a Plot in Graphic or Spreadsheet Format .............5-7

Saving Data to a Database ..........................5-7

“Drag-n-Drop” ................................5-7

Printing ....................................5-8

Appendix A - Reference Data A-1

Coaxial Cable Technical Data........................A-1

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Chapter 1 General Information

Introduction

This chapter provides a description, performance specifications, optional accessories, pre ventive maintenance, and calibration requirements for the Site Master model S251B. Throughout this manual, the term Site Master will refer to the S251B.

Model

S251B 625 to 2500 MHz 2

Frequency Range Ports

Description

The Site Master is a hand held SWR/RL (standing wave ratio/return loss), transmission gain/loss and Distance-To- Fault (DTF) measurement instrument that includes a built-in synthesized signal source. All models include a keypad to enter data and a liquid crystal display (LCD) to provide graphic indications of SWR, RL or dB over the selected frequency range and SWR or RL over the selected distance. The Site Master is capable of up to 2.5 hours of continuous operation from a fully charged field-replaceable battery and can be operated from a 12.5 dc source. 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 SWR, return loss, or one-port cable insertion loss and locating faulty RF components in antenna systems. Power monitoring is available as an option. Site Master model S251B includes transmission gain or loss (S21) measurements and an optional built-in bias tee. The displayed trace can be scaled or enhanced with frequency markers 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

The Software Tools PC-based software program provides a database record for storing measurement data. Site Master Software Tools can also convert the Site Master display to a Microsoft Windowsä 95/98/NT workstation graphic. Measurements stored in the Site Mas ter internal memory can be downloaded to the PC using the included null-modem serial ca ble. Once stored, the graphic trace can be displayed, scaled, or enhanced with markers and limit lines. Historical graphs can be overlaid with current data, and underlying data can be extracted and used in spreadsheets or for other analytical tasks.

The Site Master Software Tools program also performs DTF (Distance To Fault) and Fault Location.

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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,

CDROM disk containing the Software Tools program. This program contains Fault Lo

cation (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 10A ¾ Add Bias Tee

Optional Accessories

Anritsu Precision N (m) Open/Short/Load, 42 dB, Part No. OSLN50LF

Anritsu Precision N (f) Open/Short/Load, 42 dB, Part No. OSLNF50LF

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

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

Armored Test Port Extension Cable, 1.5 meter, N (m) to N (f), Part No. 15NNF50-1.5A

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Armored Test Port Extension Cable, 3.0 meter, N (m) to N (f), Part No. 15NNF50-3.0A

Armored Test Port Extension Cable, 5.0 meter, N (m) to N (f), Part No. 15NNF50-5.0A

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Chapter 1 General Information

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

N (m), Part No. 15NN50-1.5A Armored Test Port Extension Cable, 3.0 meter, N (m) to

N (m), Part No. 15NN50-3.0A Armored Test Port Extension Cable, 5.0 meter, N (m) to

N (m), Part No. 15NN50-5.0A Armored Test Port Extension Cable, 1.5 meter, N (m) to

7/16 DIN (f), Part No. 15NDF50-1.5A Armored 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

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

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-414 Printer), Part No. 2000-10012

Thermal Paper (use with the DPU-411/DPU-414 Printer), Part No. 2000-755

Rechargeable Battery, NiMH Part No. 633-27

Battery Charger, NiMH only Part No. 2000-1029

Performance Specifications

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

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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

Site Master: Frequency Range:

S251B 625 to 2500 MHz Frequency Accuracy (RF Source Mode): 75 parts per million @ 25°C* Frequency Resolution: 10 kHz SWR:

Range Resolution

Return Loss:

Range Resolution

**Distance-To-Fault (DTF):

Range (in meters) Resolution (in meters) (Rectangular Windowing)

Insertion Loss/Gain

Range: Resolution

RF Source

Frequency Power Output (nominal)

Wattmeter Power Monitor:

Range Offset Range

Resolution

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

up to the level of: RF Out

RF In

Maximum Input (Damage Level):

Test Port, Type N RF Detector

Measurement Accuracy: Measurement accuracy depends on calibration components. Precision calibration load provides a corrected directivity of 42 dB.

Cable Insertion Loss:

Range Resolution

1.00 to 65.00

0.01

0.00 to 54.00 dB

0.01 dB

0 to (Resolution x dp)

(. )( )15 108´ V

Where V the cable . dp is the number of data points (128, 256,

512). DF is F2 - F1 (in Hz.)

–120.00 to 100.00 dB

0.01 dB

625 to 2500 MHz @ 10 kHz step selectable, – 30 dBm or+6dBm

–80.0 to +80 dBm or

10.0 pW to 100.0 kW 0 to +60.0 dB

0.1 dB or

0.1 xW

+10 dBm, reflection + 30 dBc transmission

+22 dBm +20 dBm

0.00 to 54.00 dB

0.01 dB

is the relative propagation velocity of

Value

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Chapter 1 General Information

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

Bias Tee

input voltage: output current:

General Internal Memory:

Trace Memory

Instrument config. RS-232

Electromagnetic Compatibility Meets European community requirements for

Power Supply:

External DC Input +12.5 to +15 Vdc, 1100 mA max.

Temperature:

Storage

Operation Weight: 1.82 kg (4.0 pounds) Dimensions: 25.4 x 17.8 x 6.1 cm

* ±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 interfering signal exactly at the same frequency (worst case situation). Typical immunity is better when swept frequency is used.

12.5 to 15.0 Vdc 270 ma maximum surge, 25 ms 240 ma maximum steady

200 maximum 10 setup locations with associated calibration 9 pin D-sub, three wire serial

CE marking

–20° C to 75° C

0° C to 50° C

(10x7x2.4inches)

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Chapter 1 General Information

Preventive Maintenance

Site Master preventive maintenance consists of cleaning the unit and inspecting and clean ing 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 abra sive cleaners.

Clean the RF connectors and center pins with a cotton swab dampened with denatured alco hol. 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 the 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.

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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) or Open-Short-Load-Through (OSLT) calibration should be per formed 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 right side of the LCD screen, that the in ternal temperature has exceeded a safety window, and the user is advised to perform an other OSL or OSLT calibration in order to maintain the integrity of the measurement.

NOTES: For best calibration results—compensation for all measurement uncertain ties—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 Site Master test port to the device under test, cable bending subsequent to the OSL or OSLT 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.

For optimum calibration, Anritsu recommends using precision calibration components.

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 on the following page.

The Site Master itself is self-calibrating, meaning that there are no field-adjustable compo nents. However, the OSL calibration components are crucial to the integrity of the calibra tion 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.

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Chapter 1 General Information

Table 1-2. Anritsu Service Centers

UNITED STATES

ANRITSU COMPANY 685 Jarvis Drive Morgan Hill, CA 95037-2809 Telephone: (408) 776-8300,

1-800-ANRITSU

FAX: 408-776-1744

ANRITSU COMPANY 10 New Maple Ave., Unit 305 Pine Brook, NJ 07058 Telephone: (201) 227-8999,

1-800-ANRITSU

FAX: 201-575-0092

ANRITSU COMPANY 1155E. Collins Blvd Richardson, TX 75081 Telephone: 1-800-ANRITSU FAX: 972-671-1877

AUSTRALIA

ANRITSU PTY. LTD. Unit 3, 170 Foster Road Mt. Waverley, VIC 3149 Australia Telephone: 03-9558-8177 Fax: 03-9558-8255

BRAZIL

ANRITSU ELECTRONICALTDA. Praia de Botafogo 440, Sala 2401 CEP 22250-040,Rio de Janeiro,RJ, Brasil Telephone: 021-28-69-141 Fax: 021-53-71-456

CANADA

ANRITSU INSTRUMENTS LTD. 215 Stafford Road, Unit 102 Nepean, Ontario K2H 9C1 Telephone: (613) 828-4090 FAX: (613) 828-5400

CHINA

ANRITSU BEIJING SERVICE CENTER Beijing Fortune Building 416W, 5 Dong San Huan Bei Lu Chaoyang qu Beijing 100004, China Telephone: 011065909237 FAX: 011065909236

FRANCE

ANRITSU S.A 9 Avenue du Quebec Zone de Courtaboeuf 91951 Les Ulis Cedex Telephone: 016-44-66-546 FAX: 016-44-61-065

GERMANY

ANRITSU GmbH Grafenberger Allee 54-56 D-40237 Dusseldorf, Germany Telephone: 0211-96 85 50 FAX: 0211-96 85 555

INDIA

MEERA AGENCIES (P) LTD A-23 Hauz Khas New Delhi 110 016 Telephone: 011-685-3959 FAX: 011-686-6720

ISRAEL

TECH-CENT, LTD Haarad St. No. 7, Ramat Haahayal Tel-Aviv 69701 Telephone: (03) 64-78-563 FAX: (03) 64-78-334

ITALY

ANRITSU Sp.A Rome Office Via E. Vittorini, 129 00144 Roma EUR Telephone: (06) 50-22-666 FAX: (06) 50-22-4252

JAPAN

ANRITSU CORPORATION 1800 Onna Atsugi-shi Kanagawa-Prf. 243 Japan Telephone: 0462-23-1111 FAX: 0462-25-8379

KOREA

ANRITSU CORPORATION LTD. #901 Daeo Bldg. 26-5 YeoidoDong, Youngdeungpo Seoul Korea 150 010 Telephone: 02-782-7156 FAX: 02-782-4590

SINGAPORE

ANRITSU (SINGAPORE) PTE LTD 3 Shenton Way #24-03 Shenton House Singapore 0106 Telephone: 022-65-206 FAX: 022-65-207

SOUTH AFRICA

ETESCSA 12 Surrey Square Office Park 330 Surrey Avenue Ferndale, Randburt, 2194 South Africa Telephone:01-11-787-7200 Fax: 01-11-787-0446

SWEDEN

ANRITSU AB Botvid Center S-1585 Stockholm, Sweden Telephone: (08) 534-717-00 FAX: (08) 534-717-30

TAIWAN

ANRITSU CO., LTD. 8F, No. 96, Section 3 Chien Kuo N. Road Taipei, Taiwan,R.O.C. Telephone: (02) 515-6050 FAX: (02) 509-5519

UNITED KINGDOM

ANRITSU LTD. 200 Capability Green Luton, Bedfordshire LU1 3LU, England Telephone: 015-82-41-88-53 FAX: 015-82-31-303

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Chapter 2 Getting Started

Introduction

The Nickel Metal Hydride (NiMH) Battery supplied with the Site Master is shipped in a discharged state. Before using the Site Master, the internal battery must first be charged for three hours, either in the Site Master or in the optional battery charger (Anritsu part num ber: 2000-1029).

Charging a New Battery

New batteries normally require three to five charge and discharge cycles before attaining maximum performance. The NiMH battery supplied with the Site Master has already com pleted three charge and discharge cycles at the factory and full battery performance should be realized after your first charge.

Charging the Battery in the Site Master

The battery can be charged while still installed in the Site Master.

Step 1. Turn the Site Master off. Step 2. Connect the AC-DC adapter (Anritsu part number: 40-115) to the Site Master

charging port.

Step 3. Connect the AC adapter to a 120 VAC or 240 VAC power source as appropriate

for your application.

The green external power indicator on the Site Master will illuminate, indicating the presence of external DC power and the battery will begin charging. The indi cator will remain lit as long as the battery is charging. Once the battery is fully charged, the battery indicator will turn off. If the battery fails to charge, contact your nearest Anritsu service center.

Charging the Battery in the Optional Charger

Up to two batteries can be charged simultaneously in the optional battery charger.

Step 1. Remove the NiMH battery from your Site Master and place it in the optional

charger (Anritsu part number: 2000-1029).

Step 2. Connect the lead from the AC-DC adapter to the charger. Step 3. Connect the AC-DC adapter to a 120 VAC or 240 VAC power source as appro

priate for your application.

Each battery holder in the optional charger has an LED charging status indicator. The LED color changes as the battery is charged:

Red indicates the battery is charging Green indicates the battery is fully charged Yellow indicates the battery is in a waiting state (see below).

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Chapter 2 Getting Started

A yellow light may occur because the battery became too warm during the charge cycle. The charger will allow the battery to cool off before continuing the charge. A yellow light may also indicate that the charger is alternating charge to each of the two batteries.

A blinking red light indicates less than 13 VDC is being supplied to the charger stand. Check that the correct AC charger adapter is connected to the charger stand.

If a battery fails to charge, contact your nearest Anritsu Service Center.

You can charge the battery anytime. However, NiMH battery will last longer and perform better if allowed to completely discharge before recharging. For maximum battery life, it is recommended that the NiMH battery be completely discharged and recharged once every three months.

Battery Charge Indicator

When the AC-DC adapter is unplugged from the Site Master, the battery indicator symbol will be continuously displayed at the top left corner of the Site Master display (Figure 2-1).

Battery Indicator

625.0

1384.45 MHz

2096.66 MHz

MODE

FREQ/DIST

Site Master S251B

2500.0

AMPLITUDE

SWEEP

START CAL

SAVE SETUP

LIMIT

SAVE DISPLAY

ON OFF

AUTO SCALE

RECALL SETUP

MARKER

RECALL DISPLAY

ESCAPE

CLEAR

ENTER

RUN

HOLD

SYS

Figure 2-1. Site Master Battery Indicator

A totally black bar indicates a fully charged battery. When

LOW BATT replaces the battery

indicator bar at the top left corner, a couple of minutes of measurement time remains. If a flashing

LOW BATT is accompanied by an audio beep at the end of each trace, the battery

has approximately one minute of useable time remaining.

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Chapter 2 Getting Started

The battery status can also be checked by pressing the SYS key and the STATUS soft key. The Status table will display the remaining battery charge as a percent, as shown below.

STATUS

OSL CALIBRATION

FREQUENCY = 2.0 – 1000 MHz CAL TEMPERATURE (24–54° C)

CURRENT TEMPERATURE = 38° C BATTERY CHARGE = 75%

PRESS ESCAPE TO CONTINUE

Figure 2-2. Example Status Table Display

Once all the power has drained from the battery, the Site Master display will fade. At this point, your Site Master will switch itself off and the battery will need to be recharged.

Discharging the NiMH Battery

The NiMH battery will last longer and perform better if allowed to completely discharge before recharging. For maximum battery life, it is recommended that the NiMH battery be completely discharged and recharged once every three months.

To discharge the battery, leave the Site Master switched on until the battery is drained. The Site Master will display a gins to run low. Allow the battery to fully discharge until the Site Master switches itself off.

NOTE: Do not attempt to discharge the battery by any other means. Never short-circuit the battery terminals.

LOW BATT message and an audio warning when the battery be-

Battery Life

It is normal for NiMH batteries to self-discharge during storage. To minimize battery dis charge during storage, it is recommended that the battery be removed from the Site Master if the Site Master is not to be used for a long period of time.

It is normal for NiMH battery to degrade to 80% of original capacity after 12 months of continuous use.

The battery can be charged and discharged 300 to 500 times, but it will eventually wear out. The battery may need to be replaced when the operating time between charging is notice ably shorter than normal.

Important Battery Information

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Chapter 2 Getting Started

With a new NiMH battery, full performance is achieved after three to five complete

charge and discharge cycles. Use only Anritsu approved battery packs.

Recharge the battery only in the Site Master or in an Anritsu approved charger.

When the Site Master or the charger is not in use, disconnect it from the power source.

Do not charge batteries for longer than 24 hours; overcharging may shorten battery life.

If left unused a fully charged battery will discharge itself over time.

Discharge an NiMH battery from time to time to improve battery performance and bat

tery life. The battery can be charged and discharged hundreds of times, but it will eventually wear

out. The battery may need to be replaced when the operating time between charging is notice

ably shorter than normal. Do not short-circuit the battery terminals.

Do not drop, mutilate or attempt to disassemble the battery.

Never use a damaged or worn out charger or battery.

Always use the battery for its intended purpose only.

Temperature extremes will affect the ability of the battery to charge: allow the battery to

cool down or warm up as necessary before use or charging.

Storing the battery in extreme hot or cold places will reduce the capacity and lifetime of the battery.

Do not dispose of batteries in a fire!

Batteries must be recycled or disposed of properly. Do not place batteries in garbage.

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Chapter 3

Functions and Operations

Introduction

This chapter provides a brief overview of the Site Master functions and operations, provid ing the user with a starting point for making basic measurements. For more detailed infor mation, refer to Chapter 4, Measurements and Chapter 5, Software Tools.

The Site Master is designed specifically for field environments and applications requiring mobility. As such, it is a lightweight, handheld, battery operated unit which can be easily carried to any location, and is capable of up to 2.5 hours of continuous operation from a fully charged battery. Built-in energy conservation features allow battery life to be extended over an eight-hour workday. The Site Master can also be powered by a 12.5 Vdc external source. The external source can be either the Anritsu AC-DC Adapter (P/N 40-115) or 12.5 Vdc Automotive Cigarette Lighter Adapter (P/N 806-62). Both items are standard accesso ries.

Front Panel Overview

The Site Master menu-driven user interface is easy to use and requires little training. Mode, Frequency, Amplitude and Sweep function keys are located just below the display and are easily configured for optimum measurements. Selection of one of these keys brings up a function-specific menu on the right hand side of the display. The softkeys adjacent to the display provide access to the various menu items (See Figure 3-1).

625.0

1384.45 MHz

2096.66 MHz

MODE

FREQ/DIST

Figure 3-1. Site Master Soft Keys

Site Master S251B

2500.0

AMPLITUDE

SWEEP

START CAL

SAVE SETUP

LIMIT

SAVE DISPLAY

OFF

ESCAPE

CLEAR

AUTO SCALE

RECALL SETUP

MARKER

ENTER

RECALL

RUN

DISPLAY

HOLD

SYS

SOFT KEY

3-1

Page 20

Chapter 3 Functions and Operations

Test Connector Panel

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

12.5-15VDC (1100 mA)

When using the AC-DC Adapter, always use a three-wire power cable connected to a three-wire power line outlet. If power is supplied without grounding the equip ment in this manner, there is a risk of receiving a severe or fatal electric shock.

Battery Charging

External Power

Serial Interface

RF Out RF output, 50 W impedance, for reflection measurements.

RF In RF input 50 W impedance for transmission loss or gain measurement.

RF Detector RF detector input for the Power Monitor.

12.5 to 15 Vdc @ 1100 mA input to power the unit or for battery charging.

WARNING

Illuminates when the battery is being charged. The indicator automatically shuts off when the battery is fully charged.

Illuminates when the Site Master is being powered by the external charging unit.

RS232 DB9 interface to a COM port on a personal computer (for use with the Anritsu Software Tools program) or to a supported printer.

3-2

Page 21

Chapter 3 Functions and Operations

Keypad Controls

This section contains an alphabetical listing of the Site Master front panel keypad controls along with a brief description of each. More detailed descriptions of the major function keys follow.

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

LCD Contrast adjust. Use the Up/Down arrow key and play contrast.

AMPLITUDE Displays the amplitude or scale menu of the current operating mode.

NOTE: The AMPLITUDE and LIMIT keys are functionally identical.

AUTO SCALE

ENTER Implements certain menu and key selections.

ESCAPE

CLEAR

FREQ/DIST Displays the Frequency or Distance menu depending on the measurement mode.

LIMIT Displays the amplitude or scale menu of the current operating mode.

MARKER Displays the marker menu of the current operating mode.

Automatically scales the display for optimum resolution.

Exits the present operation 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.

ENTER to adjust the dis

MODE Opens the mode selection box (below). Use the Up/Down arrow key to select a

mode. Press the

MEASUREMENT MODE

FREQ - SWR

DTF - SWR

POWER MONITOR RF SOURCE

Figure 3-2. Mode Selection Box

ENTER key to implement.

RETURN LOSS

CABLE LOSS - ONE PORT INSERTION LOSS (+6 dBm) INSERTION LOSS (–30 dBm)

RETURN LOSS

3-3

Page 22

Chapter 3 Functions and Operations

OFF

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.

PRINT Prints the current display to the selected printer via the RS232 serial port.

RECALL DISPLAY

Recalls a previously saved trace from memory. When the key is pressed, a Re call Trace selection box appears on the display. Select a trace using the Up/Down arrow key and press the

To erase a saved trace, highlight the trace and select the

ENTER key to implement.

DELETE TRACE

softkey. To erase all saved traces, select the DELETE ALL TRACES softkey.

RECALL SETUP

Recalls a previously saved setup from memory location 1 through 10. When the key is pressed, a setup using the Up/Down arrow key and press the

RECALL SETUP selection box appears on the display. Select a

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. When in the Hold mode, the hold symbol (page 3-23) appears on the LCD. Hold mode conserves battery power.

SAVE DISPLAY

Saves up to 200 displayed traces to non-volatile memory. When the key is pressed,

TRACE NAME: appears in the lower left of the display. Save the dis-

play with up to 16 alphanumeric characters for that trace name and press the

ENTER key to implement.

SAVE SETUP

START CAL

Saves the current system setup to 1 of 10 internal non-volatile memory locations. When the key is pressed, a play. Use the Up/Down arrow key to select a setup and press the

SAVE SETUP selection box appears on the dis-

ENTER key to

implement.

Starts the calibration in SWR, Return Loss, Cable Loss, insertion loss, insertion gain, or DTF measurement modes. Follow the text in the lower left message area that instructs you to do the following:

CONNECT OPEN TO RF out PORT, Press ENTER

The Site Master then measures the calibration “open” that you must attach to the end of the test port or to the end of the test port cable attached to the RF Out port.

CONNECT SHORT TO RF out PORT, Press ENTER

The Site Master then measures the calibration “short” that you must attach to the end of the test port or to the end of the test port cable attached to the RF Out port.

CONNECT LOAD TO RF out PORT, Press ENTER

The Site Master then measures the 50W load that you must attach to the end of the test port or to the end of the test port cable attached to the RF Out port.

3-4

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Chapter 3 Functions and Operations

NOTE: The combined measurements of an open, a short, and a known-impedance load normalizes the measurement system to account for uncertainties intro

duced by measurement-system components (e.g., cables, connectors, etc.).

CONNECT LOADS TO RF Out PORT and RF In PORT, Press ENTER.

The Site Master then measures the isolation between the RF Out port and the RF In port, or between the test port cables attached to the RF Out and RF In ports.

CONNECT RF Out PORT to RF In PORT, Press ENTER.

The Site Master then measures the through path between the RF Out port and the RF In port, or between the ends of the test port cables connected to the ports.

SWEEP Displays the Sweep function soft key menu for the current operating mode.

SYS Displays the System menu softkey selections.

Up/Down Arrow Key

Increments or decrements a parameter value or chooses an item from a list which can then be selected with the

ENTER key.

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

3-5

Page 24

Chapter 3 Functions and Operations

Soft Keys

Each keypad key opens a set of soft key selections. Each of the soft keys has a correspond ing soft key label area on the display. The label identifies the function of the soft key for the current Mode selection.

NOTE: The AMPLITUDE and LIMIT keys are functionally identical.

Figures 3-3 through 3-8 show the soft key labels for each Mode selection.

FREQ/DIST

AMPLITUDE

TOP

BOTTOM

LIMIT

LIMIT BEEP

ON/OFF

EDIT

SEGMENT

SWEEP

RESOLUTION

SINGLE SWEEP

TRACE

MATH

TRACE

OVERLAY

ON/OFF

130

259

517

SCROLL

SEGMENT

SELECT

SEGMENT

BACK

Figure 3-3. Frequency Mode Soft Key Labels

FULL

SPAN

TOP OF

LIST

PAGE

DOWN

BOTTOM

LIST

DELETE

TRACE

DELETE

ALL

TRACES

SELECT

TRACE

BACK

3-6

Page 25

MODE=POWER MONITOR:

Chapter 3 Functions and Operations

SOFTKEYS:

Figure 3-4. Power Monitor Mode Soft Key Labels

UNITS

REL

OFFSET

ZERO

3-7

Page 26

Chapter 3 Functions and Operations

FREQ/DIST

DTF AID

LOSS

PROP

VEL

CABLE

WINDOW

ON/OFF

EDIT

SEGMENT

SCROLL

SEGMENT

FULL SPAN

SELECT

SEGMENT

BACK

AMPLITUDE

TOP

BOTTOM

LIMIT

LIMIT BEEP

TOP OF

LIST

PAGE

DOWN

BOTTOM

LIST

SWEEP

RESOLUTION

SINGLE SWEEP

TRACE

MATH

TRACE

OVERLAY

ON/OFF

SELECT

TRACE

BACK

Figure 3-5. Distance to Fault Mode Soft Key Labels

3-8

DELETE

TRACE

DELETE

ALL

TRACES

Page 27

ON/OFF

EDIT

ON/OFF

EDIT

Chapter 3 Functions and Operations

MARKER

ON/OFF

MARKER

PEAK

MARKER

VALLEY

BACK

DELTA

M2-M1

MARKER

PEAK

MARKER

VALLEY

BACK

Figure 3-6. Marker Key Soft Key Labels

ALL OFF

ON/OFF

EDIT

DELTA

M3-M1

MARKER

PEAK

MARKER

VALLEY

BACK

EDIT

DELTA

M4-M1

MARKER

PEAK

MARKER

VALLEY

BACK

3-9

Page 28

Chapter 3 Functions and Operations

SAVE DISPLAY

ABC

DEF

GHI

JKL

MNO PQR

STU

VWX

-./

SPACE

BACK

SPACE

Figure 3-7. Save Display and Recall Display Soft Key Menus

RECALL DISPLAY

TOP

LIST

PAGE

DOWN

BOTTOM

LIST

DELETE

TRACE

DELETE

ALL

TRACES

Figure 3-8. SYS Key Soft Key Menus

UNITS

PRINTER

FIXED

CHANGE

DATE

FORMAT

BIAS

TEE

SYS

OPTIONS

CLOCK

SELF TEST

HOUR

STATUS

MINUTE

MONTH

DAY

YEAR

BACK

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Page 29

Chapter 3 Functions and Operations

FREQ/DIST Displays the frequency or distance menu depending on the measurement mode.

Frequency Menu

Distance Menu

Distance Sub-Menu

Provides for setting sweep frequency end points when

FREQ mode is selected.

Selected frequency values may be changed using the keypad or Up/Down arrow key.

F1 — Opens the F1 parameter for data entry. This is the start value for the

frequency sweep. Press

F2 — Opens the F2 parameter for data entry. This is the stop value for the

frequency sweep. Press

ENTER when data entry is complete.

Provides for setting Distance to Fault parameters when a DTF mode is selected. Choosing

DIST causes the soft keys, below, to be displayed and the correspond

ing values to be shown in the message area. Selected distance values may be changed using the keypad or Up/Down arrow key.

D1 — Opens the start distance (D1) parameter for data entry. This is the start

value for the distance range. Press

D2 — Opens the end distance (D2) parameter for data entry. This is the end

value for the distance range. Press

DTF AID — Provides interactive help to optimize DTF set up parameters.

ENTER when data entry is complete.

You will be prompted for system parameter values of maximum distance, frequency span, and propagation velocity.

MORE — Selects the Distance Sub-Menu, detailed below.

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.

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)

PROP VEL (relative propagation velocity) — Opens the Propagation Veloc

ity 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)

CABLE — Opens a common coaxial cable folder and custom coaxial cable

folder. Select either folder and use the Up/Down arrow key and

ENTER key

to make a selection. This feature provides a rapid means of setting both cable loss and propagation velocity. (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”.) The custom cable folder con sists of up to 49 user-defined cable parameters downloaded via the Site Mas ter Software Tools program.

WINDOW — Opens a menu of FFT windowing types for the DTF calcula

tion. Scroll the menu using the Up/Down arrow key and make a selection with the

ENTER key.

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Page 30

Chapter 3 Functions and Operations

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 3-9 thru 3-12, on pages 3-13 and 3-14, are examples of the types of Windowing.

BACK — Returns to the Distance Menu.

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Page 31

Chapter 3 Functions and Operations

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

Figure 3-9. Rectangular Windowing Example

-5

-1 0

-1 5

-2 0

D istance To Fault

30 35 40

Feet

45 50

55 60

-2 5

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

-3 0

-3 5

-4 0

-4 5

-5 0

20 25

Figure 3-10. Nominal Side Lobe Windowing Example

Feet

3-13

Page 32

Chapter 3 Functions and Operations

-5

-1 0

-1 5

-2 0

-2 5

D istance To Fault

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

-3 0

-3 5

-4 0

-4 5

-5 0

510

Figure 3-11. Low Side Lobe Windowing Example

-5

-1 0

-1 5

-2 0

20 25 30

D istance To Fault

35 40 45

Feet

50 55

-2 5

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

-3 0

-3 5

-4 0

-4 5

-5 0

20 25

Figure 3-12. Minimum Side Lobe Windowing Example

3-14

30 35 40

Feet

55 60

Page 33

Chapter 3 Functions and Operations

AMPLITUDE Displays the amplitude or scale menu depending on the measurement mode.

Amplitude Menu

Segment Limit Line Sub-Menu

Provides for changing the display scale and selects segment limit lines. Selected values may be changed using the Up/Down arrow key or keypad.

Choosing

AMPLITUDE in FREQ or DTF measurement modes causes the soft

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

Pressing the

TOP — Opens the top parameter for data entry and provides for setting the

top scale value. Press

BOTTOM — Opens the bottom parameter for data entry and provides for set

ting the bottom scale value. Press

LIMIT — Opens the segment limit line selection table and the segment limit

LIMIT key on the keypad will also call up this menu.

ENTER when data entry is complete.

line sub menu (see below). Use the Up/Down arrow key to select one of the five segment limit lines. Press the

LIMIT BEEP — Toggles the Limit beep sound on or off. When on, the Site

ENTER key to select.

Master sounds a beep when the measured value is above any of the segment limit lines.

Provides for setting each of the five segment limit lines. Selected values may be changed using the Up/Down arrow keys or the keypad.

ON/OFF — Toggles the selected segment limit line on or off.

EDIT SEGMENT — Opens the selected segment limit line parameter table

for data entry. Use the Up/Down arrow and

ENTER key to select the segment

limit line parameter (start freq, start limit, stop freq, or stop limit) to edit. Use the Up/Down arrow keys or the keypad to edit the parameter value. Press the

ENTER key when done editing, or press ESCAPE to revert to the

previous value.

SCROLL SEGMENT — Opens the selected segment limit line for scrolling.

Use the Up/Down arrow key to scroll the selected limit line up and down the amplitude display. Press the

CAPE

to revert to the previous value.

FULL SPAN — Span the selected segment limit line to the full frequency

ENTER key when done scrolling, or press ES

display (F1 to F2).

NOTE: The Start and Stop limit values remain at the segment limit line value.

SELECT SEGMENT — Opens the segment selection table. Use the

Up/Down arrow key to select the current active segment limit line on the dis play.

BACK — Returns to the Amplitude (or Limit) menu.

SWEEP Displays the Sweep function soft key menu for the current operating mode.

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Chapter 3 Functions and Operations

Sweep Menu Provides for changing the display resolution, single or continuous sweep, and

access to the Trace Math functions. Choosing

SWEEP in FREQ or DTF measurement modes causes the soft keys

below to be displayed.

RESOLUTION — Opens the display to change the resolution. Choose 130,

259, or 517 data points. (Not active in DTF mode. In DTF mode, resolution can be adjusted through the DTF-AID table.)

SINGLE SWEEP — Toggles the sweep between single sweep and continu

ous sweep. In single sweep mode, each sweep must be activated by the

RUN/HOLD button. TRACE MATH — Opens up the Trace Math functions (trace-memory or

trace+memory) for comparison of the real time trace in the display with any of the traces from memory. (Not available in DTF mode.)

TRACE OVERLAY — Selects the Trace Overlay function and opens the

trace overlay sub-menu.

NOTE: The trace overlay function is valid only for traces in memory that have the same measurement mode, number of data points, and frequency or distance range as the currently displayed trace.

Trace Overlay Sub-Menu

The trace overlay sub-menu is used to turn the trace overlay function on or off and for selecting the overlay trace from memory.

ON/OFF — Toggles the trace overlay function on and off. If trace overlay is

currently off, selecting on will bring up the trace memory selection table and sub-menu.

SELECT TRACE — Opens the trace memory selection table and the Select

Trace sub-menu. Press

ENTER to select a trace from the table. The Select

Trace sub-menu choices are:

TOP OF LIST — Move the selection cursor to the top (first) memory lo

cation.

PAGE UP — Move the selection cursor to the top of the previous trace

memory location page. Each page contains 15 trace memory locations.

PAGE DOWN — Move the selection cursor to the top of the next trace

memory location page.

BOTTOM OF LIST — Move the selection cursor to the bottom (last)

memory location.

DELETE TRACE — Delete the selected trace from memory. This option

is not available when using Trace Overlay.

DELETE ALL TRACES — Delete all traces from memory. This option is

not available when using Trace Overlay.

BACK — Return to the Sweep menu.

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Chapter 3 Functions and Operations

MARKER Choosing MARKER causes the soft keys, below, to be displayed and the corre

sponding values to be shown in the message area. Selected frequency marker or distance marker values may be changed using the keypad or Up/Down arrow key.

M1 — Selects the M1 marker parameter and opens the Markers second level

menu.

M2 — Selects the M2 marker parameter and opens the Markers second level

menu.

M3 — Selects the M3 marker parameter and opens the Markers second level

menu.

M4 — Selects the M4 marker parameter and opens the Markers second level

menu.

ALL OFF — Turns all markers off.

Markers (second level)

Provides for turning the selected marker on and off and for setting marker val ues. Selected frequency marker and distance marker values can be changed us ing the keypad or Up/Down arrow key.

Choosing

M1, M2, M3,orM4 in FREQ or DTF measurement modes causes the

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

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

EDIT — Opens the selected marker parameter for data entry. Press ENTER

when data entry is complete or ESCAPE to restore the previous value.

DELTA (Mx-M1) — Displays delta amplitude value for as well as delta fre-

quency or distance for the selected marker with respect to the M1 marker.

MARKER TO PEAK — Places the selected marker at the frequency or dis-

tance with the maximum amplitude value.

MARKER TO VALLEY — Places the selected marker at the frequency or dis

tance with the minimum amplitude value.

BACK — Returns to the Main Markers Menu.

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Page 36

Chapter 3 Functions and Operations

SYS Displays the System menu softkey selections.

OPTIONS — Displays a second level of functions.

CLOCK — Displays a second level of functions.

SELF TEST — Start an instrument self test.

STATUS — Displays instrument status.

Options Sub-Menu

Clock Sub-Menu

UNITS — Select the unit of measurement (English or metric).

PRINTER — Displays a menu of supported printers. Use the Up/Down arrow

key and

FIXED CW — Toggles the fixed CW function ON or OFF. When ON, sweep

ENTER key to make the selection.

time is reduced and immunity to RF interference is less. When OFF, (normal mode) the unit provides maximum RF interference immunity.

CHANGE DATE FORMAT — Toggles the date format between MM/DD/YY,

DD/MM/YY, and YY/MM/DD.

BIAS TEE — Toggles Bias Tee on and off.

HOUR — Enter the hour (0-23) using the Up/Down arrow key or the keypad.

Press

ENTER when data entry is complete or ESCAPE to restore the previous

value.

MINUTE — Enter the minute (0-59) using the Up/Down arrow key or the

keypad. Press

ENTER when data entry is complete or ESCAPE to restore the

previous value.

MONTH — Enter the month (1-12) using the Up/Down arrow key or the key-

pad. Press

ENTER when data entry is complete or ESCAPE to restore the pre-

vious value.

DAY — Enter the day using the Up/Down arrow key or the keypad. Press ENTER when data entry is complete or ESCAPE to restore the previous

value.

SAVE DISPLAY

3-18

YEAR — Enter the year (1997-2036) using the Up/Down arrow key or the

keypad. Press

ENTER when data entry is complete or ESCAPE to restore the

previous value.

BACK — Returns to the top-level SYS menu.

Choosing Save Display activates the alphanumeric menu for trace storage. Use the soft keys to enter a label for the saved trace.

For example, to save a display with the name “TRACE1” press the soft key for the group that contains the letter “T” and then press the “T” soft key. Press the soft key for the group that contains the letter “R” then press the “R” soft key. Continue for the rest of the letters. Use the number keys on the numeric keypad to enter numbers. Use the softkeys and keypad as necessary to enter the entire name, then press

The

BACK SPACE softkey removes the currently highlighted letter in the trace

ENTER to complete the process.

name.

Page 37

Chapter 3 Functions and Operations

RECALL DISPLAY

Recalls a trace from memory for viewing or to be used as a trace overlay. Selec tions are:

TOP OF LIST — Move the selection cursor to the top (first) memory loca

tion.

PAGE UP — Move the selection cursor to the top of the previous trace

memory location page. Each page contains 15 trace memory locations.

PAGE DOWN — Move the selection cursor to the top of the next trace mem

ory location page.

BOTTOM OF LIST — Move the selection cursor to the bottom (last) memory

location.

DELETE TRACE — Delete the selected trace from memory. This option is

not available when using Trace Overlay.

DELETE ALL TRACES — Delete all traces from memory. This option is not

available when using Trace Overlay.

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Page 38

Chapter 3 Functions and Operations

Power Monitor Menu

Selecting POWER MONITOR from the Mode menu causes the soft keys, described below, to be displayed and the corresponding values shown in the message area.

UNITS — Toggles between dBm and Watts.

REL — Turns relative mode OFF, if currently ON. If relative mode is cur

rently 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).

OFFSET — Turns Offset OFF, if currently ON. If Offset is currently OFF,

turns it ON and opens the Offset parameter for data entry. Press 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 dis play.

ZERO — Turns Zero OFF, if currently ON. If Zero is currently OFF, this

softkey 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.

ENTER

3-20

Page 39

Printing

Chapter 3 Functions and Operations

Printing is accomplished by selecting an available printer and pressing the print key as de scribed below. Refer to the particular printer operating manual for specific printer settings.

Printing a Screen

Step 1. Connect the printer as shown in Figure 3-13.

Site Master S251B

FREQ/DIST

AMPLITUDE

2500.0

SWEEP

625.0

1384.45 MHz

2096.66 MHz

MODE

Figure 3-13. Site Master Printer Setup

ESCAPE

CLEAR

START

AUTO

CAL

SCALE

SAVE

RECALL

SETUP

LIMIT

MARKER

ENTER

RECALL

RUN

SAVE

DISPLAY

HOLD

SYS

OFF

SERIAL CABLE

2000-1012

SERIAL-TO-PARALLEL

INTERFACECABLE

2000-753

HP 340

DESKJET

SEIKO PRINTER

Step 2. Obtain the desired measurement display Step 3. Press the

Figure 3-14. SYS Key and OPTIONS Soft Key

SYS key and the OPTIONS soft key (Figure 3-14) .

Site Master S251B

625.0

1384.45 MHz

2096.66 MHz

MODE

FREQ/DIST

2500.0

AMPLITUDE

SWEEP

START CAL

SAVE SETUP

LIMIT

SAVE DISPLAY

OFF

PTIONS

ESCAPE

CLEAR

AUTO SCALE

RECALL SETUP

MARKER

ENTER

RECALL

RUN

DISPLAY

HOLD

SYS

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Page 40

Chapter 3 Functions and Operations

PRINTER

Step 4. Press the PRINTER soft key and select from the displayed menu of supported

printers.

Step 5. Press the

PRINT key. (Figure 3-15).

625.0

1384.45 MHz

2096.66 MHz

MODE

FREQ/DIST

Site Master S251B

2500.0

AMPLITUDE

SWEEP

START CAL

SAVE SETUP

LIMIT

SAVE DISPLAY

ON OFF

ESCAPE

CLEAR

AUTO SCALE

RECALL SETUP

MARKER

ENTER

RECALL

RUN

DISPLAY

HOLD

SYS

Figure 3-15. PRINTER Soft Key and PRINT Key

Printer Switch Settings

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 all other printers as follows:

SW1

OFF ON OFF OFF OFF OFF ON OFF

SW2 SW3 SW4 SW5 SW6 SW7 SW8

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Page 41

Chapter 3 Functions and Operations

Symbols

Table 3-1 provides a listing of the symbols used as condition indicators on the LCD display.

Table 3-1. LCD Icon Symbols

Icon Symbol

Site Master is in Hold for power conservation. To resume sweeping, press

HOLD

the

RUN/HOLD key. After 10 minutes without a key press, the Site Master

will automatically activate the power conservation mode.

Integrator Failure

Lock fail indication. Check battery. (If the Site Master fails to lock with a fully charged battery, call your Anritsu Service Center.)

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

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

Indicates internal data processing.

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 temper ature 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.

3-23

Page 42

Chapter 3 Functions and Operations

Error Codes

Self Test Errors

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

Table 3-2. Self Test Error Messages

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 1-8.

Battery voltage is less than 9.5 volts. Charge battery. If condition per sists, call your Anritsu Service Center.

External supply voltage is less than 12.5 volts. Call your Anritsu Ser vice 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 persists with a fully charged battery, call your Anritsu Ser vice Center.

Non-volatile memory system has failed. Call your Anritsu Service Center.

Ambient temperature is not within the specified operating range. If the temperature is within the specified operating range and the condition persists, call your Anritsu Service Center.

Description

3-24

Page 43

Range Errors

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

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

Error Message

RANGE ERROR:F1 > F2

RANGE ERROR:D1 > D2

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

RANGE ERROR: TOP<=BOTTOM

RANGE ERROR: TOP>=BOTTOM

CAL INCOMPLETE

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

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:

MaximumUnaliased Range

Where: dp is the number of data points (128, 256, or 512)

is the relative propagation velocity

F2 is the stop frequency in Hz F1 is the start frequency in Hz Maximum Unaliased Range is in meters

Refer to Figure 3-16, page 3-27, for a plot of maximum range versus frequency span.

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 or a complete open, short, load isolation and thru calibration must be performed before calibration can be turned on.

Valid distance to fault plots require a non-zero 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 previ ously 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.

Chapter 3 Functions and Operations

Description

dp V

( . )( )( )15 10

(meters)

3-25

Page 44

Chapter 3 Functions and Operations

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

Error Message

CANNOT ZERO INPUT SIGNAL TOO HIGH

POWER MONITOR OPTION NOT INSTALLED

LIMIT SEGMENTS CANNOT OVERLAP

EITHER STORED SWEEP IS NOT COMPATIBLE, OR NO STORED SWEEP AT THIS LOCATION

VERTICAL LIMIT SEGMENTS ARE NOT ALLOWED

NO EXTERNAL POWER TO BATTERY RECHARGER PORT. BIAS TEE CANNOT BE ACTIVATED.

BIAS TEE OPTION NOT INSTALLED

Description

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.

Segment limit lines are not allowed to overlap in frequency or dis tance.

Attempt to overlay a stored trace to the display from an empty loca tion, or with a different measurement mode or setup than the current display.

Segment limit line does not support vertical limit lines.

Attempting to use the Bias Tee option without external power applied to the battery recharge port.

Attempting to use the Bias Tee option when the option has not been installed.

3-26

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Chapter 3 Functions and Operations

Figure 3-16. Maximum Distance and Resolution vs Frequency Span

3-27

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Chapter 3 Functions and Operations

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 Anritsu controls to be more easily accessed (Figure 3-17).

Figure 3-17. Using the Site Master Soft Carrying Case

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Chapter 4 Measurements

Introduction

This chapter provides a description of the Site Master measurement functions and examples of frequency domain, distance domain, and two-port (insertion gain or loss) measurements.

Measurement Functions

Site Master operation is divided into four measurement modes: frequency domain, distance domain, two-port, and power monitor.

Frequency domain measurements consist of Return Loss (RL), Standing Wave Ratio

(SWR), and Cable Loss (CL) made over a selectable frequency range. SWR and RL char acterize the magnitude of reflections present in a device or transmission line. CL mea surements display the insertion loss of a transmission line over frequency.

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.

Two-port transmission gain or loss measurement is commonly known as S21 or through

measurement. The gain or loss measurement is made over a selectable frequency range and the magnitude in dB characterizes the performance of the device under test. Gain and loss measurement includes Tower Mount Amplifier (TMA) verification, antenna-to-antenna isolation, and duplexer filter rejection and isolation.

Power monitor measurements can be either absolute or relative 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 dis play. Finally, a zero adjust function is provided to allow subtraction of an inherent “noise” level prior to display.

CAUTION: The measurement system MUST be calibrated at the ambient tem perature prior to making a measurement. You must calibrate when the setup frequency is changed. Calibrations are stored with each of the setups.

It is recommended that the appropriate calibration, (open-short-load or open-short-load-thru) be performed on the Site Master prior to measurements. This gives confidence to the operator that the measurement performed is accurate and system uncer tainties have been minimized.

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Chapter 4 Measurements

Power On Procedure

Step 1. Press the

ON/OFF key.

The Site Master takes about five seconds to perform a series of self-diagnostic and adjustment routines. At completion, the screen displays the Anritsu logo, the model number, and the version of firmware installed.

Step 2. Press

ENTER to continue, or wait for one minute.

The Site Master is now ready for operation.

Calibration Procedure

The following procedure provides the steps necessary to perform Open-Short-Load (OSL) and Open-Short-Load-Thru (OSLT) calibrations. Calibration is done with the maximum 517 data points and is valid for 130 and 259 data point settings (default is 259). Refer to Figure 4-1 for setup.

LOAD

TEST PORT CABLE (OPTIONAL)

RF IN TEST PORT

OPEN

SHORT

LOAD

CALIBRATION

TEST PORT CABLE (OPTIONAL)

RF OUT TEST PORT

Site Master S251B

AMPLITUDE

2500.0

SWEEP

625.0

MODE

1384.45 MHz

2096.66 MHz

FREQ/DIST

Figure 4-1. One-port Measurement Calibration Setup

Step 1. Press the

MODE key.

Step 2. Use the Up/Down arrow key to scroll to

OSL calibration; or scroll to

INSERTION LOSS (+6 dBm) or INSERTION GAIN

(–30 dBm) measurement mode for OSLT calibration..

4-2

ESCAPE CLEAR

START

AUTO

CAL

SCALE

SAVE

RECALL

SETUP

LIMIT

MARKER

ENTER

RECALL

RUN

SAVE

DISPLAY

HOLD

SYS

OFF

FREQ - SWR or RETURN LOSS for

Page 49

Step 3. Press the ENTER key to select the measurement mode.

LOAD

Chapter 4 Measurements

TEST PORT CABLE

(OPTIONAL)

TEST PORT CABLE

START CAL

SAVE SETUP

LIMIT

SAVE DISPLAY

OFF

AUTO SCALE

RECALL SETUP

MARKER

RECALL DISPLAY

(OPTIONAL)

RF OUT TESTPORT

ESCAPE CLEAR

ENTER

RUN HOLD

SYS

RF IN TESTPORT

625.0

1384.45 MHz

2096.66 MHz

MODE

FREQ/DIST

Site Master S251B

2500.0

SWEEP

AMPLITUDE

Figure 4-2. Two-Port Measurement Calibration Setup

Selecting the Frequency Range

The following procedure selects the frequency range for the calibration.

Step 4. Press the Step 5. Press the Step 6. Enter 6, 2, 5 or a user-defined frequency using the key pad or the Up/Down ar-

row key.

FREQ/DIST key. F1 soft key.

OPEN

SHORT

LOAD

Step 7. Press Step 8. Press the

ENTER to set F1 to 625 MHz or the user-defined frequency.

F2 soft key.

Step 9. Enter 2, 5, 0, 0 or a user-defined frequency using the keypad or the Up/Down ar

row key.

Step 10. Press

ENTER to set F2 to 2500 MHz or the user-defined frequency.

Step 11. Check that the FREQ (MHz) scale in the display area indicates the new fre

quency start and stop values (for example: F1 = 625 MHz, F2 = 2500 MHz).

Performing a Calibration

The following procedures detail how to perform the calibrations. Steps 12 through 15 de scribe OSL calibration, while steps 16 and 17 apply only to OSLT calibration.

Step 12. Press the

PORT” will appear in the display.

Step 13. Connect the calibrated Open and press the

suring OPEN” and “CONNECT SHORT TO RF OUT” will appear.

Step 14. Remove the Open, connect the calibrated Short and press the

messages “MEASURING SHORT” and “CONNECT LOAD TO RF OUT” will appear.

START CAL key. The message “CONNECT OPEN TO RF OUT

ENTER key. The messages “Mea

ENTER key. The

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Chapter 4 Measurements

Step 15. Remove the Short, connect the calibrated Load and press the ENTER key. The

message “MEASURING LOAD ” will appear.

NOTE: For OSLT calibration, the messages “MEASURING LOAD” and “CONNECT LOADS TO RF OUT AND RF IN PORTS” will appear.

Step 16. Connect the second calibrated load to the RF In test port and press the

key. The messages “MEASURING ISOLATION” and “CONNECT RF OUT PORT TO RF IN PORT” will appear.

Step 17. Remove both loads, connect an adapter and/or a cable from the RF Out test port

to the RF In test port and press

ENTER.

Step 18. Verify that the calibration has been properly performed by checking that the

message “CAL ON” is displayed in the upper left corner of the display.

Setting the Amplitude Scale

The following procedure sets the amplitude scale.

Step 1. Press the Step 2. In SWR mode, press the

Up/Down arrow key, and press tion Gain/Loss mode, enter 100.)

Step 3. In SWR mode, press the

Up/Down arrow key, and press sertion Gain/Loss mode, enter –120.)

NOTE: Figure 4-3 and 4-4 show the typical responses of a valid OSL calibration with a load attached to the test port with 517 data points. Figures 4-5, 4-6, 4-7 and 4-8 show typical responses of a valid OSLT calibra tion with loads attached to the test port and with the RF Out test port attached to the RF In test port. To change the number of data points, press the

RESOLUTION soft key. Select 130, 259, or 517 data points.

AMPLITUDE or LIMIT key to call up the Scale menu.

TOP soft key and enter 1, ., 1 using the key pad or the

ENTER. (In Return Loss mode, enter 0; in Inser-

BOTTOM soft key and enter 1 using the key pad or the

ENTER. (In Return Loss mode, enter 54; in In-

SWEEP key, followed by the

ENTER

Saving the Setup

The following procedure can be used to save a setup and calibration in memory.

Step 1. Press the

SAVE SETUP key.

Step 2. Use the key pad or the Up/Down arrow key to select a memory location (1 - 10),

then press

ENTER.

Recalling a Setup

The following procedure recalls a setup from memory.

Step 1. Press the

RECALL SETUP key.

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Chapter 4 Measurements

Step 2. Select the desired setup using the Up/Down arrow key and press ENTER to re

call the display.

Saving a Display to Memory

The following procedure saves a display to memory.

Step 1. Press the

age.

Step 2. Use the soft keys to enter a label for the saved trace.

For example, to save a display with the name “TX1 RETURN LOSS” press the soft key group that contains the letter “T” then press the “T” soft key. Press the soft key group that contains the letter “X” then press the “X” soft key. Press the number “1” key on the numeric keypad. Use the softkeys and keypad as neces sary to enter the entire name, then press

NOTE: More than one trace can be saved using the same alphanumeric name, as traces are stored chronologically, using the time/date stamp.

SAVE DISPLAY key to activate the alphanumeric menu for trace stor

ENTER to complete the process.

Recalling a Display From Memory

The following procedure recalls a previously saved display from memory.

Step 1. Press the Step 2. Select the desired display using the Up/Down arrow key and press

call the display.

Figure 4-4. SWR Measurement Mode Calibration Results

RECALL DISPLAY key.

ENTER to re-

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Chapter 4 Measurements

Figure 4-5. Insertion Loss Mode Calibration Results (Loads at RF Out and RF In)

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Chapter 4 Measurements

Figure 4-6. Insertion Loss Mode Calibration Results (Loads at RF Out and RF In)

Figure 4-7. Insertion Gain Mode Calibration Results (RF Out connected to RF In)

4-7

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Chapter 4 Measurements

Figure 4-8. Insertion Gain Mode Calibration Results (RF Out Connected to RF In)

NOTES: For best calibration results–compensation for all measurement system 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 as the antenna or device to be tested will be connected. For best results, use a phase stable Test Port Extension cable. In a typical laboratory cable, bending subsequent to the calibration will cause uncompensated phase reflections inside the cable. Cables that are not phase stable may cause measurement errors that become more pronounced as the test frequency increases.

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Chapter 4 Measurements

SWR (Return Loss) and Cable Loss Measurement

The following frequency domain measurement is an example of a Standing Wave Ratio (or Return Loss) and Cable Loss measurement made over a selectable frequency range. This measurement example determines the quality and loss of the test port cable or device under test.

Required Equipment

Site Master Model S251B

Precision N (m) Open/Short, Anritsu 22N50 and

Precision N (m) Load, Anritsu SM/PL

Precision N (m) Open/Short/Load, Anritsu OSLN50LF N (m) - N (f) Test Port Extension Cable, Anritsu 15NNF50-1.5A

Device-Under-Test Specification

Type Typical Loss @1.5m V

0.4 dB @ 625 MHz

0.5 dB @ 800 MHz

15NNF50-1.5A

0.6 dB @ 1000 MHz

0.7 dB @ 1500 MHz

0.8 dB @ 2000 MHz

0.9 dB @ 2500 MHz

Procedure

Step 1. Press the ON/OFF key on the Site Master.

Selecting the Measurement Mode

Step 2. Press the MODE key. Step 3. Use the Up/Down arrow key to scroll to Step 4. Press the ENTER key to select Frequency SWR or Return Loss measurement

mode.

Selecting the Frequency Range

Step 5. Press the FREQ/DIST key. Step 6. Press the

F1 soft key.

Return Loss SWR

0.86 ³ 21 dB £ 1.20

FREQ-SWR or FREQ-RETURN LOSS.

Step 7. Enter 6, 2, 5 using the key pad or the Up/Down arrow key. Step 8. Press Step 9. Press the

ENTER to set F1 to 625 MHz.

F2 soft key.

Step 10. Enter 2, 5, 0, 0 using the keypad or the Up/Down arrow key. Step 11. Press

ENTER to set F2 to 2500 MHz.

Step 12. Check that the FREQ (MHz) scale in the display area indicates the new fre

quency start and stop values (F1 = 625 MHz, F2 = 2500 MHz).

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Chapter 4 Measurements

Performing a Calibration

Step 13. Press the START CAL key. Follow the instructions that appear in the message

area.

Step 14. Connect the Open, Short, and Load component to the test port and press the

ENTER key as prompted after connecting each component.

Refer to the “Performing a Calibration” procedure on page 4-3 for detailed cali bration steps.

NOTES: For best calibration results — compensation for all measurement system uncer tainties — ensure that the Open/Short/Load is at the end of the test port or op tional 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 Anritsu test port to the device-under-test, cable bending subsequent to the Open/Short/Load cal ibration will cause uncompensated phase reflections inside the cable. Thus, ca bles which are not phase stable may cause measurement errors that are more pronounced as the test frequency increases.

For optimum calibration, Anritsu recommends using precision calibration components.

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Page 57

SWR or Return Loss Measurement

Step 15. Disconnect the Load and connect the test port extension cable to the Site Master

test port.

Step 16. Connect the Load to the open end of the test port extension cable as shown in

Figure 4-9.

Chapter 4 Measurements

OPEN

625.0

MODE

SHORT

LOAD

1384.45 MHz

2096.66 MHz

FREQ/DIST

CALIBRATION

Site Master S251B

2500.0

SWEEP

AMPLITUDE

Figure 4-9. Cable Measurement Test Setup

Step 17. Observe the displayed measurement. Figures 4-10 and 4-11 show typical SWR

and Return Loss measurements with markers and limit line set.

RFOUT/REFLECTION

TEST PORT

ESCAPE CLEAR

START

AUTO

CAL

SCALE

SAVE

RECALL

SETUP

LIMIT

MARKER

ENTER

RECALL

RUN

SAVE

DISPLAY

HOLD

SYS

OFF

LOAD

SHORT

MEASUREMENT

Set the Amplitude Scale and Limit Line

The following procedure sets the top and bottom scale display.

Step 18. Press the Step 19. In SWR mode, press the

Up/Down arrow key. Press enter 0.)

Step 20. In SWR mode, press the

Up/Down arrow key. Press mode, enter 5, 4.)

Step 21. Press the Step 22. Use the Up/Down arrow key to scroll to segment #1 and press the

SEGMENT

Step 23. Use the Up/Down arrow key to scroll to the

ENTER to edit the value.

AMPLITUDE or LIMIT key to call up the Scale Menu.

TOP soft key and enter 1, ., 3 using the keypad or

ENTER to set the top scale. (In Return Loss mode,

BOTTOM soft key and enter 1 using the keypad or

ENTER to set the bottom scale. (In Return Loss

LIMIT soft key to activate the segment limit line table.

soft key to change the parameter values for segment #1.

EDIT

START FREQ parameter and press

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Chapter 4 Measurements

Step 24. Enter 6, 2, 5 using the key pad or the Up/Down arrow key. Press ENTER to set

the Start Frequency to 625 MHz.

Step 25. Use the Up/Down arrow key to scroll to the

press

ENTER to edit the value.

START FREQ LIMIT parameter and

Step 26. For FREQ-SWR, enter 1, ., 1, 2. For FREQ-RETURN LOSS, enter 2, 5. Press

ENTER to set the Start Frequency Limit value.

Step 27. Use the Up/Down arrow key to scroll to the

ENTER to edit the value.

Step 28. Enter 2, 5, 0, 0 using the key pad or the Up/Down arrow key. Press

STOP FREQ parameter and press

ENTER to

set the Stop Frequency to 2500 MHz.

Step 29. Use the Up/Down arrow key to scroll to the

press

ENTER to edit the value.

STOP FREQ LIMIT parameter and

Step 30. For FREQ-SWR, enter 1, ., 2. For FREQ-RETURN LOSS, enter 2, 1. Press

ENTER to set the Stop Frequency Limit value.

Step 31. Press

ENTER at OK to accept the values and activate the Segment 1 limit line.

NOTE: Alternatively, if the Start and Stop frequencies are the full span of the Site Master, simply edit the Start and Stop frequency Limits and select the

FULL SPAN

soft key. Press ENTER at OK to accept and activate the Segment 1 limit line.

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Page 59

Setting the Markers

The following procedure sets the markers.

Chapter 4 Measurements

Step 32. Press the Step 33. Press the

and enter 8, 2, 4 using the keypad or Up/Down arrow key. Press M1 to 824 MHz. (Note: pressing the the M1 marker function.)

Step 34. Press the Step 35. Repeat steps 33 and 34 for markers M2, M3, and M4. Set M2 to 960 MHz, M3

to 1710 MHz, and M4 to 1990 MHz. Figures 4-10 and 4-11 depict the SWR and Return Loss measurements).

NOTE: Refer to page 4-4 for instructions on saving and recalling a setup or display.

MARKER key to call up the Markers menu. M1 soft key to select the M1 marker function. Press the EDIT soft key

ENTER to set

ON/OFF soft key activates or deactivates

BACK soft key to return to the Markers menu.

Figure 4-10. Cable SWR Measurement Results

Figure 4-11. Cable Return Loss Measurement Results

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Chapter 4 Measurements

Cable Loss Measurement

The following frequency domain measurement is an example of a Cable Loss measurement made over a selectable frequency range following the Marker setting steps 32 to 35.

NOTE: If SWR/Return Loss measurement has not been done, calibration must be per formed before determining the cable loss.

Step 36. Disconnect the load from the end of the cable and replace it with a short.

Step 37. Press the Step 38. Use the Up/Down arrow key to scroll to Step 39. Press

MODE key.

CABLE LOSS - ONE PORT.

ENTER to select Cable Loss measurement mode.

Setting the Amplitude Scale

The following procedure sets the scale display.

Step 40. Press the

AMPLITUDE key to call up the Scale Menu.

Step 41. Press the TOP soft key and enter 0 using the keypad or Up/Down arrow key.

ENTER to set the top scale.

Press

Step 42. Press the BOTTOM soft key and enter 1 using the keypad or Up/Down arrow

key. Press

ENTER to set the bottom scale.

NOTE: An alternative method of setting the amplitude scale is to use the key.

Setting the Segment Limit LInes

The following procedure sets the segment limit lines.

AUTO SCALE

4-14

Step 43. Press the Step 44. Press the

AMPLITUDE or LIMIT key to call up the Segment Limit Line menu. LIMIT soft key to activate the segment limit line table.

Step 45. Use the Up/Down arrow key to scroll to segment #1 and press the

MENT

soft key to change the parameter values for segment #1.

Step 46. Use the Up/Down arrow key to scroll to the

ENTER to edit the value.

START FREQ parameter and press

Step 47. Enter 8, 2, 4 using the key pad or the Up/Down arrow key. Press

the Start Frequency to 824 MHz.

Step 48. Use the Up/Down arrow key to scroll to the

press

ENTER to edit the value.

Step 49. Enter ., 5. Press

ENTER to set the Start Frequency Limit value.

Step 50. Use the Up/Down arrow key to scroll to the

ENTER to edit the value.

START FREQ LIMIT parameter and

STOP FREQ parameter and press

EDIT SEG

ENTER to set

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Chapter 4 Measurements

Step 51. Enter 9, 6, 0 using the key pad or the Up/Down arrow key. Press ENTER to set

the Stop Frequency to 960 MHz.

Step 52. Use the Up/Down arrow key to scroll to the

press

ENTER to edit the value.

Step 53. Enter ., 5, 5. Press Step 54. Press Step 55. Press the

ENTER at OK to accept the values and activate the Segment 1 limit line.

SELECT SEGMENT soft key and use the Up/Down arrow key to scroll

to segment #2. Press the

ENTER to set the Stop Frequency Limit value.

EDIT SEGMENT soft key to change the parameter val

STOP FREQ LIMIT parameter and

ues for segment #2.

Step 56. Repeat the above steps as necessary to set the Segment #2 Start Frequency to

1710 MHz, Start Limit to 0.70, Stop Frequency to 1990 MHz, and Stop Limit to

0.8. Figure 4-12 depicts a typical cable loss measurement.

Figure 4-12. Cable Loss Measurement Results

NOTE: Refer to page 4-4 for instructions on saving and recalling a setup or display.

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Chapter 4 Measurements

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 S251B

Precision Open/Short, Anritsu 22N50 and

Precision Load, Anritsu SM/PL

Precision Open/Short/Load, Anritsu OSLN50LF Test Port Extension Cable, Anritsu 15NNF50-1.5A

Device-Under-Test Specification

Type Typical Loss @1.5m

0.4 dB @ 625 MHz

15NNF50-1.

0.5 dB @ 800 MHz

0.6 dB @ 1000 MHz

0.7 dB @ 1500 MHz

0.8 dB @ 2000 MHz

0.9 dB @ 2500 MHz

0.86 ³ 21 dB £ 1.20

Return

Loss

SWR

Procedure

Step 1. Press the ON/OFF key on the Site Master.

Selecting the Measurement Mode

Step 2. Press the MODE key. Step 3. Use the Up/Down arrow key to scroll to Step 4. Press the

ENTER key to select DTF-SWR or Return Loss measurement mode. If

the Site Master has not been calibrated (CAL OFF displayed in the upper left of the display), the DTF AID parameter table will appear.

NOTE: Where CAL ON is indicated on the Site Master, pressing the DTF AID soft key will activate the DTF parameter table. However, distance and cable type (propagation velocity and loss) have not been optimized. F1 and F2 are set by “CAL ON” setup. DTF measurement is valid for D2 £ D F2 and F1). The number of data points (resolution) will automatically adjust according to the length of D2.

DTF-SWR or DTF-RETURN LOSS.

(as defined by

max

4-16

Step 5. Use the Up/Down arrow key to scroll to

D2, then press ENTER to select the ca

ble length.

Step 6. Enter 2 using the keypad or the Up/Down arrow key. Press

2.0 meters.

ENTER to set D2 to

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Chapter 4 Measurements

Step 7. Use the Up/Down arrow key to scroll to F1, then press ENTER to select the start

frequency F1.

Step 8. Enter 6, 2, 5 using the keypad or the Up/Down arrow key. Press

ENTER to set

F1 to 625 MHz.

Step 9. Use the Up/Down arrow key to scroll to

F2, then press ENTER to select the start

frequency F2.

Step 10. Enter 2, 5, 0, 0 using the keypad or the Up/Down arrow key. Press

F2 to 2500 MHz.

Step 11. Scroll to

PROP VEL and press ENTER to select Propagation Velocity

parameters.

NOTE: Propagation velocity and cable loss can be accessed by selecting

FUNCTION

Step 12. Enter ., 8, 6 and press Step 13. Press

from the DTF AID parameter table.

ENTER to set the Propagation Velocity to 0.86.

ENTER to start the calibration.

CABLE

NOTE: If the calibration is valid, scroll to

ENTER. If calibration is necessary, proceed to the calibration instructions.

CALIBRATION VALID–CONTINUE and press

ENTER to set

Performing a Calibration

This procedure is used to perform a calibration.

Step 14. At the Perform Calibration menu, follow the instructions on the display to con

nect the respective calibration components to the Site Master test port. (Refer to the calibration procedure on page 4-3.)

For optimum calibration, Anritsu recommends using precision calibration com ponents.

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Chapter 4 Measurements

DTF Measurement (Determining the Length of the Cable)

Step 15. Disconnect the Load and connect the test port extension cable to the Site Master

test port.

Step 16. Connect the Short to the open end of the test port extension cable.

NOTE: The number of data points displayed can be changed by selecting DTF AID table.

Setting the Amplitude Scale

Step 17. Press the AMPLITUDE or LIMIT key to call up the Scale Menu.

Optional: Press the

AUTO SCALE key to optimize the amplitude scale.

RES in the

Step 18. In SWR mode, press the

Up/Down arrow key. Press enter 0.)

Step 19. In SWR mode, press the

Up/Down arrow key. Press mode, enter 54.)

TOP soft key and enter 3, 0 using the keypad or

ENTER to set the top scale. (In Return Loss mode,

BOTTOM soft key and enter 1 using the keypad or

ENTER to set the bottom scale. (In Return Loss

Setting the Marker

Step 20. Press the MARKER key to call up the Markers menu. Step 21. Press the

ON/OFF soft key activates or deactivates the M1 marker function.)

Step 22. Press the Step 23. Press the

Figures 4-13 and 4-14 show cable length displays in SWR and Return Loss modes.

NOTE: Refer to page 4-4 for instructions on saving and recalling a setup or display.

M1 soft key to select the M1 marker function. (Note: pressing the

MARKER TO PEAK soft key to find the cable length. BACK soft key or the ESCAPE key to return to the previous menu.

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Page 65

Figure 4-13. DTF - SWR Measurement Results (cable length)

Chapter 4 Measurements

Figure 4-14. DTF - RETURN LOSS Measurement Results (cable length)

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Chapter 4 Measurements

DTF Measurement (Determining the quality of the cable.)

NOTE: If cable length measurement has not been done, calibration must be done be fore determining the quality of the cable (steps 1-15).

Step 24. Disconnect the Short and connect the Load to the test port extension cable

Setting the Amplitude Scale

Step 25. Press the AMPLITUDE or LIMIT key to call up the Scale Menu..

Optional: Press the

AUTO SCALE key to optimize the amplitude scale.

Step 26. In SWR mode, press the

Up/Down arrow key. Press enter 20.)

Step 27. In SWR mode, press the

Up/Down arrow key. Press mode, enter 54.)

TOP soft key and enter 1, ., 0, 5 using the keypad or

ENTER to set the top scale. (In Return Loss mode,

BOTTOM soft key and enter 1 using the keypad or

ENTER to set the bottom scale. (In Return Loss

Setting the Markers

Step 28. Press the MARKER key to call up the Markers menu. Step 29. Press the

ON/OFF soft key activates or deactivates the M2 marker function.)

Step 30. Press the

Loss reading. (See Figures 4-15 and 4-16.)

NOTE: Refer to page 4-4 for instructions on saving and recalling a setup or display.

M2 soft key to select the M2 marker function. (Note: pressing the

MARKER TO PEAK soft key to find the maximum SWR or Return

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Figure 4-15. DTF - SWR Measurement Results (cable quality)

Chapter 4 Measurements

Figure 4-16. DTF - RETURN LOSS Measurement Results (cable quality)

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Chapter 4 Measurements

Insertion Gain (Amplifier) Measurement

The following frequency domain measurement is an example of a Insertion Gain (Ampli fier) measurement over a selectable frequency range. Insertion loss measurements, such as antenna-to-antenna isolation and filter rejection (isolation), follow the same procedures as below except in Insertion Loss (+6 dBm) measurement mode.

Required Equipment

Site Master Model S251B

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

(2) N (m) to 7/16 (m) Test Port Extension Cables, Anritsu 15NNF50-1.5A or

(2) N (m) to N (f) Test Port Cables and (2) N (m) to 7/16 (m) adaptors (510-92) 7/16 (f) Adapter, Anritsu 510-97

Tower Mount Amplifier, Ericsson A57001HQ85 or equivalent

Device-Under-Test Specification

Type Frequency Range Gain (Typical)

TMA

1885 to 1990 MHz 1965 to 1990 MHz

+12 dB

–0.5 dB

Procedure

Step 1. Press the ON/OFF key on the Site Master.

Selecting the Measurement

Step 2. Press the MODE soft key. Step 3. Use the Up/Down Arrow key to scroll to

the

ENTER key to select insertion gain measurement mode.

Selecting the Frequency Range

Step 4. Press the FREQ soft key. Step 5. Press the

F1 soft key.

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

F1 to 1800 MHz.

Step 7. Press the

F2 soft key.

Step 8. Enter 2, 1 ,0, 0 using the keypad or Up/Down Arrow key. Press

to 2100 MHz.

Performing a Calibration

Step 9. Connect the test port extension cables to the RF In and RF Out test ports as

shown in Figure 4-17.

Step 10. Press the

START CAL key. Follow the instructions in the message area.

INSERTION GAIN (–30 dBm). Press

ENTER to set

ENTER to set F2

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Chapter 4 Measurements

Step 11. Connect the Open, Short, Loads, and through adapter to the test port extension

cable and press the

ENTER key as prompted. Refer to the Calibration Procedure

earlier in this chapter for detailed calibration instructions.

NOTE: The number of data points displayed can be changed by selecting

RES in the

DTF AID table.

LOAD

TEST PORT CABLE

(OPTIONAL)

RF IN TEST PORT

625.0

1384.45 MHz

2096.66 MHz

MODE

FREQ/DIST

Site Master S251B

2500.0

SWEEP

AMPLITUDE

TEST PORT CABLE (OPTIONAL)

RF OUT TEST PORT

ESCAPE

CLEAR

START

AUTO

CAL

SCALE

SAVE

RECALL

SETUP

LIMIT

MARKER

ENTER

RECALL

RUN

SAVE

DISPLAY

HOLD

SYS

OFF

OPEN

SHORT

LOAD

Figure 4-17. Two-Port Measurement Calibration Setup

When the calibration is complete the results should be similar to those shown in Figure 4-18.

Figure 4-18. Two-Port Measurement Calibration Results

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Chapter 4 Measurements

Amplifier Gain Measurement

Step 12. Disconnect the 7/16(f) adapter. The resulting display should be similar to Figure

4-19

Figure 4-19. Measurement Display Before Amplifier Connection

Step 13. Connect the amplifier to the test port extension cables as shown in Figure 4-20.

TEST PORT CABLE

(OPTIONAL)

TEST PORT CABLE

START CAL

SAVE SETUP

LIMIT

SAVE DISPLAY

OFF

(OPTIONAL)

AUTO SCALE

RECALL SETUP

MARKER

RECALL DISPLAY

RF OUTTESTPORT

ESCAPE CLEAR

ENTER

RUN HOLD

RF INTESTPORT

Site Master S251B

625.0

1384.45 MHz

2096.66 MHz

MODE

FREQ/DIST

AMPLITUDE

Figure 4-20. Amplifier Gain Measurement Setup

2500.0

SWEEP

PCS Amp

Tx\RF

Ant

SYS

Setting the Markers

Step 14. Press the MARKER key to call up the Markers menu. Step 15. Press the

4-24

M1 soft key to select the M1 marker function.

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Chapter 4 Measurements

Step 16. Press the EDIT soft key and enter 1, 8, 8, 5 using the keypad or Up/Down Arrow

NOTE: Pressing the

key. Press

ON/OFF soft key activates or deactivates the M1 marker function.

ENTER to set M1 to 1885 MHz.

Step 17. Press the Step 18. Repeat the above steps for markers M2, M3, and M4. Set M2 to 1910 MHz, M3

to 1965 MHz, and M4 to 1990 MHz.

Observe the bypass condition (Figure 4-21).

BACK soft key to return to the Markers menu.

Figure 4-21. Measurement Display Showing Bypass Condition

Activating the Bias Tee

Step 19. Press the SYS key. Step 20. Press the

Tee.

NOTE: The Site Master must have Option 10A installed and the battery charger must be connected for the bias tee to activate.

OPTIONS soft key, then the BIAS TEE soft key to activate the Bias

Setting the Amplitude Scale

Step 21. Press the AMPLITUDE or LIMIT key to call up the Scale menu. Step 22. Press the

Press

TOP soft key and enter 1, 5 using the keypad or Up/Down arrow key.

ENTER to set the top scale to 15.

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Chapter 4 Measurements

Step 23. Press the BOTTOM soft key and enter 9, 0 – using the keypad or Up/Down ar

row key. Press Observe the display of amplifier gain performance (Figure 4-22).

NOTE: Alternatively, press the AUTO SCALE key to set the top and bottom display scale.

ENTER to set the bottom scale to –90.

Figure 4-22. Measurement Display of Amplifier Gain

Step 24. Press the

NOTE: Refer to page 4-4 for instructions on saving and recalling a setup or display.

MARKER key to display the marker value.

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Chapter 4 Measurements

Making Power Measurements

Power measurement is accomplished using a broadband (1 MHz to 3000 MHz) RF detector, P/N 5400-71N50. The power monitor displays measured power in dBm or Watts.

Entering Power Monitor Mode

Step 1. Press the MODE key. Step 2. Use the Up/Down arrow key to scroll 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. Wait a few seconds while the Site Master accumulates samples of the qui escent power level. When complete, area.

Measuring High Input Power Levels

Step 4. Insert an attenuator between the DUT and the RF detector, sufficient to insure

that the input power to the Site Master is no greater the 20 dBm.

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

try. The message area will show dB.

OFFSET soft key.

Displaying Power in dBm and Watts

Step 7. Press the UNITS soft key to display power in Watts.

Displaying Relative Power

POWER MONITOR. Press ENTER to

ZERO ADJ: ON is displayed in the message

ENTER to complete the en-

OFFSET is ON along with the entered value in

Step 8. With the desired base power level input to the Site Master, press the REL soft

key. The message area will show 100%.

Step 9. Press the

reading will be in dBr, relative to the base power level.

UNITS soft key to display power in dBm. Since REL is ON, the power

REL: ON and the power reading will indicate

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Chapter 5 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 95/98/NT.

Requirements

The Site Master Software Tools program is a standard Windows program and will run on any computer that will run Windows 95/98/NT. Typically, this means having a PC with the following characteristics:

Pentium microprocessor (100 MHz or better, recommended)

Microsoft Windows 95/98/NT

32 MBytes of memory, minimum

Approximately 15 MBytes of available hard drive space

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. 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 in formation.

Changing COM Port Settings–Windows 95/98/NT

Step 1. Open the Windows Control Panel. Step 2. Double click on the Step 3. Select Step 4. Double click on the item Ports (COM & LPT) in the device list. Step 5. Double click on the communications port you want to set. The Communications

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

Device Manager. The Device List appears.

Port Properties window appears.

SYSTEM icon. The System Properties window appears.

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Chapter 5 Software Tools Program

Step 6. 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

Step 7. Choose

when done.

Step 8. Click

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

OK again to close the System Properties window.

Figure 5-1. Windows 95/98/NT COM Port Setting Dialog Boxes

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

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Chapter 5 Software Tools Program

Software Installation

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

Step 9. Insert the Anritsu Site Master Software Tools For Windows disk in the CDROM

drive.

Step 10. Select Step 11. Type Step 12. Press the

Step 13. When the Setup program prompts, select

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

Step 14. Double-click on the “Read Me” icon to read about recent changes that did not

Step 15. Double-click on the “Site Master Help” icon to acquaint yourself with the com-

Step 16. Double-click on the “Site Master Software Tools ” icon to open the Software

Run under the Start menu.

x:\SETUP, where x = the drive letter of the CDROM drive.

Enter key to select the default directory C:\Program Files\Site Master

Software Tools\

Windows.

get into this manual and important features or problems that you should know about.

prehensive on-line manual. This manual provides descriptive narrative for the various program features and controls.

Tools program.

and begin the Setup routine.

OK or press the Enter key to restart

Step 17. Click on

priate COM port number for the serial interface cable (null modem type).

Settings, in the top menu bar, and select COM Port. Enter the appro

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 to capture multiple traces to a database. In one operation, all of the data residing in the up-to-200 stored display memory locations in the Site Master can be downloaded to a database for easy data management.

NOTE: Trace scale can be captured as per Site Master or as autoscale by the capture program. To select per Site Master or autoscaling, click on Settings and Default Plot Settings from the top menu bar and pull-down menu.

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Chapter 5 Software Tools Program

Capture multiple traces to a database

Step 1. Connect the supplied cable as shown in Figure 5-2.

Serial Interface

Site Master S251B

FREQ/DIST

AMPLITUDE

2500.0

SWEEP

625.0

1384.45 MHz

2096.66 MHz

MODE

Figure 5-2. Serial Cable Connection

Step 2. Open the Site Master Software Tools program. Step 3. Double-click on the “Site Master Software Tools” icon to open the program. Step 4. Click on

Capture, in the top menu bar, and select Capture Plots To Database

from the drop-down menu.

Step 5. Follow the database instructions to download the plot(s) to either a new database

or an existing database.

Step 6. Enter the number(s) of the stored-display memory location(s) (1 to 200) from

which you wish to store to the database, and click

Step 7. Observe that the “Acquiring Control” box appears on the screen, then disappears

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

ESCAPE

CLEAR

START

AUTO

CAL

SCALE

SAVE

RECALL

SETUP

LIMIT

MARKER

ENTER

RECALL

RUN

SAVE

DISPLAY

HOLD

SYS

OFF

COM port (Program defaults to COM2)

OK.

Capture single or multiple traces to PC screen

Step 1. Perform steps 1, 2, and 3 of the capture-multiple-traces-to-database procedure. Step 2. Click on the

and select

Start Plot Capture icon or click on Capture, in the top menu bar,

Capture Plots to Screen from the drop-down menu.

Step 3. Enter the number (or numbers) of the stored-display memory location(s) (1 to

200) 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 and displayed.

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Chapter 5 Software Tools Program

Custom Cable List Uploading and Downloading

Custom cable parameters can be uploaded to the Site Master or downloaded from the Site Master and saved via the Site Master Software Tools Cable Editor.

Uploading a Cable List to the Site Master Custom Cable Table

Step 1. Connect the supplied cable as shown in Figure 5-2. Step 2. Open the Cable Editor by clicking on

Tools 32 bit

and Cable Editor.

Alternatively, open the Site Master Software Tools program, click on the top menu bar and select

Cable Editor from the drop-down menu.

Start, Programs, Site Master Software

Tools in

Step 3. Enter the required information for each custom cable entry:

Cable Name - enter the cable description Pro. Vel - enter the propagation velocity value Insertion Loss (dB/m) - enter the insertion loss value in dB/m Frequency (MHz) - enter the frequency in MHz Description - enter any description associated with that custom cable.

NOTES: As a minimum, the Cable Name and Pro. Vel cells must have entries for the Site Master to accept the selection as a valid cable during uploading. The Site Master will assign a zero value to insertion loss if the Insertion Loss cell has no entry.

Information entered into the Frequency and Description cells is not uploaded to the Site Master and so those cells will have no information when downloading the custom cable list from the Site Master back to the Cable Editor.

Step 4. Click on the

select

Step 5. When the message box appears on the screen click

ing and

Upload Cable List icon or click on Tools, in the top menu bar, and

Upload Cable List.

OK to the cable upload warn

OK when the cable upload is completed.

Downloading a Cable List from the Site Master Custom Cable Table

Step 1. Perform steps 1 and 2 above to open the Cable Editor. Step 2. Click on the

select

Step 3. When the status message box appears on the screen, click

Query Cable List icon, or click on Tools in the top menu bar and

Query Cable List.

OK to complete.

Saving a Custom Cable List

To save a custom cable to a file, click on File, in the top menu bar and select Save or Save

from the drop-down menu.

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Chapter 5 Software Tools Program

Program Operation

The captured trace on the PC can be scaled and have its limit line, markers, and properties changed. (Click on the menu to make these changes.) The operation of the various menus that allow these opera tions to be accomplished is straightforward. To read about the operation of the menus, refer to the on-line help screens, accessed from the

Plot Properties icon, or select Plot Properties under the View

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 use ful for determining the location of faults, connections, and other discontinuities within the cable.

To transform a plot, select Distance to Fault from the to Fault icon in the toolbar). A drop down menu will appear that asks you if the DUT is co axial cable or waveguide.

If coaxial cable is selected, it asks you to supply start and stop distances along with the ca ble type or propagation velocity and insertion loss values. Tables in Appendix A provide these values for some of the more popular coaxial cables (@ 1000 MHz).

If values are needed at a different frequency, or if you need the exact values for more accurate measurement, please contact the coaxial cable manufacturer. Coaxial cables may be added to the list be editing the cables.lst file. Follow the existing format to enter the data to the list. Loss is entered in dB/m only.

The distance may be entered in feet or meters. Propagation velocity is used for coaxial cable. The units may be changed by selecting and changing Measurement Units.

After supplying the needed information and clicking coax match vs. distance.

Default Plot Settings under the Settings menu

Tools menu (or click on the Distance

OK, a new plot will open showing

Smith Chart Software

After obtaining a frequency SWR or RL plot on the computer display, click the Smith

Chart

icon. Read the Help file to see how this feature functions (under Smith Chart and

Data Readout).

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Chapter 5 Software Tools Program

Saving a Plot as a Windows Metafile or as a Spreadsheet File

Plots can be saved as Windows metafile (.wmf) or as a text file (.txt). The metafile may be imported into graphic programs and a text file can be imported into a spreadsheet program, but they cannot be reloaded into the Site Master Software Tools program.

To save a plot as a Windows Metafile, click on File, in the top menu bar, and select

as Metafile

To save a plot as a text file to use in a spreadsheet, click on File in the top menu bar and se

Export to text file for Spreadsheet from the drop down menu.

lect

from the drop down menu.

Save

Pasting a Plot in Graphic or Spreadsheet For mat

The data points from a plot can be exported to a graphic application or a spreadsheet via the clipboard. To transfer data to the Windows clipboard:

Step 1. Select Settings and

menu and choose either graphical or tabular format.

Step 2. Capture or load the desired plot. Step 3. Copy the data to the clipboard by selecting the

from the Edit menu.

Step 4. To paste to a graphic application, open the application and select Paste from the

application’s

Step 5. To paste to a spreadsheet, open the spreadsheet program and place the cursor

where the first data point should appear.

Clipboard Format from the top menu bar and pull-down

Copy Plot Data icon or Copy

Edit menu.

Step 6. Select Paste from the spreadsheet program’s

Edit menu.

Saving Data to a Database

Plots can be saved to a database. Comments can be added to the plot data saved. Queries of the database provide a means of comparing plots in the database. Refer to the on-line help screens for operating instructions.

To save a plot to a database, click on

tabase

from the drop-down menu.

File, in the top menu bar, and select Save Plot to Da

“Drag-n-Drop”

Site Master Software Tools is Windows based. Graphs can “Drag-n-Drop” onto each other. Site Master Software Tools allows quick comparison of “before” and “after” Distance-ToFault measurements. Recent data is compared to a historical PC database record, which is usually recorded during site installation/commissioning.

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Chapter 5 Software Tools Program

Each cable/antenna tends to have a unique Distance-To-Fault (DTF) “Signature” because differing cable electrical lengths, cable types, dielectric thickness variations, and the posi tions of components (connectors, adapters, and lightning arresters) will cause different re flections at differing positions in the transmission line. Variations in the “signature” between maintenance intervals offer a good indication of damage or damage causing condi tions.

Printing

Captured traces may be printed from a PC using Site Master Software Tools. Once a cap tured trace has been downloaded choose printer setup can be altered, plots can be scaled, and multiple plots can be printed from the Print dialog box.

Print under the File menu for printing options. The

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Appendix A Reference Data

Coaxial Cable Technical Data

Table A-1 provides a standard listing of common coaxial cables along with their “Relative Propagation Velocity” and “Nominal Attenuation in dB/m @1000 MHz” values.

Table A-1. Coaxial Cable Technical Data (1 of 2)

Cable Type

RG8, 8A 0.659 0.262 RG9, 9A 0.659 0.289 RG17, 17A 0.659 0.180 RG55, 55A, 55B 0.659 0.541 RG58, 58B 0.659 0.558 RG58A, 58C 0.659 0.787 RG142 0.690 0.443 RG174 0.660 0.984 RG178B 0.690 1.509 RG188 0.690 1.017 RG213 0.660 0.292 RG214 0.659 0.292 RG223 0.659 0.535 FSJ1-50A 0.840 0.197 FSJ2-50 0.830 0.134 FSJ4-50B 0.810 0.119 LDF4-50A 0.880 0.077 LDF5-50A 0.890 0.043 LDF6-50 0.890 0.032 LDF7-50A 0.880 0.027 LDF12-50 0.880 0.022 HJ4-50 0.914 0.087 HJ4.5-50 0.920 0.054 HJ5-50 0.916 0.042 HJ7-50A 0.921 0.023 LMR100 0.800 0.792 LMR200 0.830 0.344 LMR240 0.840 0.262 LMR400 0.850 0.135 LMR500 0.860 0.109

Relative Propagation Velocity (

)

Nominal Attenuation

dB/m @ 1000 MHz

A-1

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Appendix A Reference Data

Table A-1. Coaxial Cable Technical Data (2 of 2)

Cable Type

LMR600 0.870 0.087 LMR900 0.870 0.056 LMR1200 0.880 0.044 LMR1700 0.890 0.033 HCC12-50J 0.915 0.042 HCC78-50J 0.915 0.042 HCC158-50J 0.950 0.023 HCC300-50J 0.960 0.014 HCC312-50J 0.960 0.013 HF 4-1/8" Cu2Y 0.970 0.010 HF 5" Cu2Y 0.960 0.007 HF 6-1/8" Cu2Y 0.970 0.006 FLC 38-50J 0.880 0.115 FLC 12-50J 0.880 0.075 FLC 78-50J 0.880 0.045 FLC 114-50J 0.880 0.034 FLC 158-50J 0.880 0.029 CR50 540PE 0.880 0.070 CR50 1070PE 0.880 0.038 310801 0.820 0.115 311201 0.800 0.180 311501 0.800 0.230 311601 0.800 0.262 311901 0.800 0.377 352001 0.800 0.377

Relative Propagation Velocity (

)

Nominal Attenuation

dB/m @ 1000 MHz

A-2

Page 84

Anritsu S251B User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents