User`s guide | Anritsu S251B Stereo System User Manual

Site Master
Model S251B
Antenna and
Cable Analyzer
User's Guide
Hand-Held Tester for Transmission Lines
and other RF Components
WARRANTY
The Anritsu product(s) listed on the title page is (are) warranted against defects in
materials and workmanship for one year from the date of shipment.
Anritsu's obligation covers repairing or replacing products which prove to be defective during the warranty period. Buyers shall prepay transportation charges for
equipment returned to Anritsu for warranty repairs. Obligation is limited to the original purchaser. Anritsu is not liable for consequential damages.
LIMITATION OF WARRANTY
The foregoing warranty does not apply to Anritsu connectors that have failed due to
normal wear. Also, the warranty does not apply to defects resulting from improper or
inadequate maintenance by the Buyer, unauthorized modification or misuse, or operation outside the environmental specifications of the product. No other warranty is
expressed or implied, and the remedies provided herein are the Buyer's sole and
exclusive remedies.
TRADEMARK 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
Copyright ã 1999 Anritsu Co.
10580-00032
Revision: A
Table of Contents
Chapter 1 - General Information
Introduction . . . . . . . . .
Description . . . . . . . . .
Standard Accessories . . . .
Options . . . . . . . . . . .
Optional Accessories . . . .
Performance Specifications
Preventive Maintenance . .
Calibration . . . . . . . . .
Annual Verification. . . . .
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1-1
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Chapter 2 - Getting Started
1-1
1-1
1-1
1-2
1-2
1-3
1-6
1-7
1-7
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
Introduction . . . . . . .
Measurement Functions
Power On Procedure . .
Calibration Procedure .
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4-1
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4-1
4-1
4-2
4-2
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Selecting the Frequency Range . .
Performing a Calibration . . . . .
Setting the Amplitude Scale . . . .
Saving the Setup . . . . . . . . . .
Recalling a Setup . . . . . . . . . .
Saving a Display to Memory . . . .
Recalling a Display From Memory
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4-3
4-3
4-4
4-4
4-4
4-5
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 . . . . . . . . . . . . . . . . . . . . .
Device-Under-Test Specification . . . . . . . . . . . . . . .
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting the Measurement Mode . . . . . . . . . . . . . .
Performing a Calibration . . . . . . . . . . . . . . . . . . .
DTF Measurement (Determining the Length of the Cable)
Setting the Amplitude Scale . . . . . . . . . . . . . . . . .
Setting the Marker . . . . . . . . . . . . . . . . . . . . . .
DTF Measurement (Determining the quality of the cable.)
Setting the Amplitude Scale . . . . . . . . . . . . . . . . .
Setting the Markers . . . . . . . . . . . . . . . . . . . . . .
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4-16
4-16
4-16
4-16
4-17
4-18
4-18
4-18
4-20
4-20
4-20
Insertion Gain (Amplifier) Measurement . . . . . . . . . . . . . . . . . 4-22
Required Equipment . . . . . . .
Device-Under-Test Specification .
Procedure . . . . . . . . . . . . .
Selecting the Measurement . . . .
Selecting the Frequency Range . .
Performing a Calibration . . . . .
Amplifier Gain Measurement . .
Setting the Markers . . . . . . . .
Activating the Bias Tee . . . . . .
Setting the Amplitude Scale . . .
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4-22
4-22
4-22
4-22
4-22
4-22
4-24
4-24
4-25
4-25
Making Power Measurements . . . . . . . . . . . . . . . . . . . . . . . 4-27
Entering Power Monitor Mode. . . .
Zeroing the Power Monitor. . . . . .
Measuring High Input Power Levels.
Displaying Power in dBm and Watts
Displaying Relative Power . . . . . .
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4-27
4-27
4-27
4-27
4-27
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. . . . . . . . . . . . . . . . . . . . . . . .
Fault Location Software . . . . . . . . . . . . . . . . . . . . .
Smith Chart Software . . . . . . . . . . . . . . . . . . . . . .
Saving a Plot as a Windows Metafile or as a Spreadsheet File
Pasting a Plot in Graphic or Spreadsheet Format . . . . . . .
Saving Data to a Database . . . . . . . . . . . . . . . . . . . .
“Drag-n-Drop” . . . . . . . . . . . . . . . . . . . . . . . . . .
Printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix A - Reference Data
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5-6
5-6
5-6
5-7
5-7
5-7
5-7
5-8
A-1
Coaxial Cable Technical Data. . . . . . . . . . . . . . . . . . . . . . . . A-1
iii/iv
Chapter 1
General Information
Introduction
This chapter provides a description, performance specifications, optional accessories, preventive maintenance, and calibration requirements for the Site Master model S251B.
Throughout this manual, the term Site Master will refer to the S251B.
Model
Frequency Range
S251B
625 to 2500 MHz
Ports
2
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 Master internal memory can be downloaded to the PC using the included null-modem serial cable. 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.
1-1
1
Chapter 1 General Information
The following items are supplied with the basic hardware.
·
Soft Carrying Case
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AC-DC Adapter
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Automotive Cigarette Lighter 12 Volt DC Adapter,
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CDROM disk containing the Software Tools program. This program contains Fault Location (DTF) and Smith Chart functions
·
Serial Interface Cable (null modem type)
·
One year Warranty (includes battery, firmware, and software)
·
User's Guide
Options
·
Option 5 — Add RF Wattmeter Power Monitor
·
Option 10A ¾ Add Bias Tee
Optional Accessories
·
Anritsu Precision N (m) Open/Short/Load, 42 dB, Part No. OSLN50LF
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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
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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
1-2
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.
1-3
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.
Value
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
1.00 to 65.00
Resolution
0.01
Return Loss:
Range
0.00 to 54.00 dB
Resolution
0.01 dB
**Distance-To-Fault (DTF):
Range (in meters)
0 to (Resolution x dp)
Resolution (in meters)
(1.5 ´ 108)(Vf )
(Rectangular Windowing)
DF
Where Vf is the relative propagation velocity of
the cable .
dp is the number of data points (128, 256,
512).
DF is F2 - F1 (in Hz.)
Insertion Loss/Gain
Range:
Resolution
RF Source
Frequency
Power Output (nominal)
Wattmeter Power Monitor:
Range
Offset Range
Resolution
–120.00 to 100.00 dB
0.01 dB
625 to 2500 MHz @ 10 kHz step
selectable, – 30 dBm or + 6 dBm
–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
50 Ohms
Test Port, Type N
***Immunity to Interfering signals
up to the level of: RF Out
+10 dBm, reflection
RF In
+ 30 dBc transmission
Maximum Input (Damage Level):
Test Port, Type N
+22 dBm
RF Detector
+20 dBm
Measurement Accuracy:
Measurement accuracy depends on calibration components. Precision calibration load provides
a corrected directivity of 42 dB.
Cable Insertion Loss:
Range
0.00 to 54.00 dB
Resolution
0.01 dB
1-4
Chapter 1
Table 1-2.
General Information
Performance Specifications (2 of 2)
Bias Tee
input voltage:
output current:
General
Internal Memory:
Trace Memory
Instrument config.
RS-232
Electromagnetic Compatibility
Power Supply:
External DC Input
Temperature:
Storage
Operation
Weight:
Dimensions:
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
Meets European community requirements for
CE marking
+12.5 to +15 Vdc, 1100 mA max.
–20° C to 75° C
0° C to 50° C
1.82 kg (4.0 pounds)
25.4 x 17.8 x 6.1 cm
(10 x 7 x 2.4 inches)
* ±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.
1-5
Chapter 1 General Information
Preventive Maintenance
Site Master preventive maintenance consists of cleaning the unit and inspecting and cleaning the RF connectors on the instrument and all accessories.
Clean the Site Master with a soft, lint-free cloth dampened with water or water and a mild
cleaning solution.
CAUTION: To avoid damaging the display or case, do not use solvents or abrasive cleaners.
Clean the RF connectors and center pins with a cotton swab dampened with denatured alcohol. Visually inspect the connectors. The fingers of the N (f) connectors and the pins of the
N (m) connectors should be unbroken and uniform in appearance. If you are unsure whether
the connectors are good, gauge the connectors to confirm that 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.
1-6
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 performed prior to making a measurement in the field. A built-in temperature sensor in the Site
Master advises the user, via an icon located on the right side of the LCD screen, that the internal temperature has exceeded a safety window, and the user is advised to perform another OSL or OSLT calibration in order to maintain the integrity of the measurement.
NOTES:
For best calibration results—compensation for all measurement uncertainties—ensure that the Open/ Short/Load is at the end of the test port or optional
extension cable; that is, at the same point that you will connect the antenna or
device to be tested.
For best results, use a phase stable Test Port Extension Cable (see Optional
Accessories). If you use a typical laboratory cable to extend the 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 components. However, the OSL calibration components are crucial to the integrity of the calibration and therefore, must be verified periodically to ensure performance conformity. This is
especially important is the OSL calibration components have been accidentally dropped or
over-torqued.
1-7
Chapter 1 General Information
Table 1-2.
Anritsu Service Centers
UNITED STATES
CHINA
KOREA
ANRITSU COMPANY
ANRITSU BEIJING SERVICE CENTER
ANRITSU CORPORATION LTD.
685 Jarvis Drive
Beijing Fortune Building
#901 Daeo Bldg. 26-5
Morgan Hill, CA 95037-2809
416W, 5 Dong San Huan Bei Lu
Yeoido Dong, Youngdeungpo
Telephone: (408) 776-8300,
Chaoyang qu
Seoul Korea 150 010
Beijing 100004, China
Telephone: 02-782-7156
Telephone: 011065909237
FAX: 02-782-4590
FAX: 011065909236
SINGAPORE
ANRITSU COMPANY
FRANCE
ANRITSU (SINGAPORE) PTE LTD
10 New Maple Ave., Unit 305
ANRITSU S.A
3 Shenton Way #24-03
Pine Brook, NJ 07058
9 Avenue du Quebec
Shenton House
Telephone: (201) 227-8999,
Zone de Courtaboeuf
Singapore 0106
91951 Les Ulis Cedex
Telephone: 022-65-206
Telephone: 016-44-66-546
FAX: 022-65-207
FAX: 016-44-61-065
SOUTH AFRICA
GERMANY
ETESCSA
ANRITSU GmbH
12 Surrey Square Office Park
Grafenberger Allee 54-56
330 Surrey Avenue
D-40237 Dusseldorf, Germany
Ferndale, Randburt, 2194
Telephone: 0211-96 85 50
South Africa
FAX: 0211-96 85 555
Telephone:01-11-787-7200
INDIA
Fax: 01-11-787-0446
MEERA AGENCIES (P) LTD
SWEDEN
A-23 Hauz Khas
ANRITSU AB
New Delhi 110 016
Botvid Center
Telephone: 011-685-3959
S-1585
FAX: 011-686-6720
Stockholm, Sweden
ISRAEL
Telephone: (08) 534-717-00
TECH-CENT, LTD
FAX: (08) 534-717-30
Haarad St. No. 7, Ramat Haahayal
TAIWAN
Tel-Aviv 69701
ANRITSU CO., LTD.
Telephone: (03) 64-78-563
8F, No. 96, Section 3
FAX: (03) 64-78-334
Chien Kuo N. Road
ITALY
Taipei, Taiwan, R.O.C.
ANRITSU Sp.A
Telephone: (02) 515-6050
Rome Office
FAX: (02) 509-5519
Via E. Vittorini, 129
UNITED KINGDOM
00144 Roma EUR
ANRITSU LTD.
Telephone: (06) 50-22-666
200 Capability Green
FAX: (06) 50-22-4252
Luton, Bedfordshire
JAPAN
LU1 3LU, England
ANRITSU CORPORATION
Telephone: 015-82-41-88-53
1800 Onna Atsugi-shi
FAX: 015-82-31-303
1-800-ANRITSU
FAX: 408-776-1744
1-800-ANRITSU
FAX: 201-575-0092
ANRITSU COMPANY
1155 E. 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 ELECTRONICA LTDA.
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
Kanagawa-Prf. 243 Japan
Telephone: 0462-23-1111
FAX: 0462-25-8379
1-8
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 number: 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 completed 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 indicator 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 appropriate 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).
2-1
2
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
Site Master S251B
1
2
START
CAL
AUTO
SCALE
SAVE
SETUP
RECALL
SETUP
3
5
LIMIT
7
SAVE
DISPLAY
625.0
2500.0
1384.45 MHz
2096.66 MHz
MODE
Figure 2-1.
FREQ/DIST
9
ON
OFF
AMPLITUDE
ESCAPE
CLEAR
4
6
MARKER
8
RECALL
DISPLAY
0
ENTER
RUN
HOLD
+/-
PRINT
.
SYS
SWEEP
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.
2-2
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 LOW BATT message and an audio warning when the battery begins 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.
Battery Life
It is normal for NiMH batteries to self-discharge during storage. To minimize battery discharge 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 noticeably shorter than normal.
Important Battery Information
2-3
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 battery 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 noticeably 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.
2-4
Chapter 3
Functions and Operations
Introduction
This chapter provides a brief overview of the Site Master functions and operations, providing the user with a starting point for making basic measurements. For more detailed information, 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 accessories.
3
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).
Site Master S251B
1
2
START
CAL
AUTO
SCALE
SAVE
SETUP
RECALL
SETUP
3
5
LIMIT
7
SAVE
DISPLAY
625.0
2500.0
1384.45 MHz
2096.66 MHz
MODE
Figure 3-1.
FREQ/DIST
9
ON
OFF
AMPLITUDE
ESCAPE
CLEAR
SOFT KEYS
4
6
MARKER
8
RECALL
DISPLAY
0
ENTER
RUN
HOLD
+/-
PRINT
.
SYS
SWEEP
Site Master Soft Keys
3-1
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)
12.5 to 15 Vdc @ 1100 mA input to power the unit or for battery charging.
WARNING
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 equipment in this manner, there is a risk of receiving a severe or fatal electric shock.
Battery
Charging
Illuminates when the battery is being charged. The indicator automatically shuts
off when the battery is fully charged.
External
Power
Illuminates when the Site Master is being powered by the external charging unit.
Serial
Interface
RS232 DB9 interface to a COM port on a personal computer (for use with the
Anritsu Software Tools program) or to a supported printer.
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.
3-2
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 ENTER to adjust the display contrast.
AMPLITUDE
Displays the amplitude or scale menu of the current operating mode.
NOTE:
The AMPLITUDE and LIMIT keys are functionally identical.
AUTO
SCALE
Automatically scales the display for optimum resolution.
ENTER
Implements certain menu and key selections.
ESCAPE
CLEAR
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.
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.
MODE
Opens the mode selection box (below). Use the Up/Down arrow key to select a
mode. Press the ENTER key to implement.
MEASUREMENT MODE
FREQ -
SWR
RETURN LOSS
CABLE LOSS - ONE PORT
INSERTION LOSS (+6 dBm)
INSERTION LOSS (–30 dBm)
DTF -
SWR
RETURN LOSS
POWER MONITOR
RF SOURCE
Figure 3-2.
Mode Selection Box
3-3
Chapter 3 Functions and Operations
ON
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 Recall Trace selection box appears on the display. Select a trace using the
Up/Down arrow key and press the ENTER key to implement.
To erase a saved trace, highlight the trace and select the 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 RECALL SETUP selection box appears on the display. Select a
setup using the Up/Down arrow key and press the ENTER key to implement.
Setup 0 recalls the factory preset state.
RUN
HOLD
When in the Hold mode, this key starts the Site Master sweeping and provides a
Single Sweep Mode trigger; when in the Run mode, it pauses the sweep. 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 display with up to 16 alphanumeric characters for that trace name and press the
ENTER key to implement.
SAVE
SETUP
Saves the current system setup to 1 of 10 internal non-volatile memory locations. When the key is pressed, a SAVE SETUP selection box appears on the display. Use the Up/Down arrow key to select a setup and press the ENTER key to
implement.
START
CAL
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:
q 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.
q 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.
q 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
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 introduced by measurement-system components (e.g., cables, connectors, etc.).
q 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.
q 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
Chapter 3 Functions and Operations
Soft Keys
Each keypad key opens a set of soft key selections. Each of the soft keys has a corresponding soft key label area on the display. The label identifies the function of the soft key for the
current 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
SWEEP
F1
TOP
RESOLUTION
F2
BOTTOM
SINGLE
SWEEP
TRACE
MATH
LIMIT
TRACE
OVERLAY
ON/OFF
LIMIT
BEEP
EDIT
SEGMENT
ON/OFF
SCROLL
SEGMENT
SELECT
TRACE
FULL
SPAN
SELECT
SEGMENT
BACK
TOP OF
LIST
PAGE
UP
PAGE
DOWN
BOTTOM
OF
LIST
DELETE
TRACE
DELETE
ALL
TRACES
Figure 3-3.
3-6
Frequency Mode Soft Key Labels
BACK
130
259
517
Chapter 3 Functions and Operations
MODE=POWER MONITOR:
SOFTKEYS:
UNITS
REL
OFFSET
ZERO
Figure 3-4.
Power Monitor Mode Soft Key Labels
3-7
Chapter 3 Functions and Operations
FREQ/DIST
AMPLITUDE
SWEEP
D1
TOP
RESOLUTION
D2
BOTTOM
SINGLE
SWEEP
DTF AID
LIMIT
TRACE
MATH
TRACE
OVERLAY
ON/OFF
EDIT
SEGMENT
MORE
LIMIT
BEEP
PROP
VEL
SELECT
TRACE
SCROLL
SEGMENT
FULL
SPAN
LOSS
ON/OFF
SELECT
SEGMENT
BACK
CABLE
WINDOW
TOP OF
LIST
PAGE
UP
PAGE
DOWN
BOTTOM
OF
LIST
DELETE
TRACE
BACK
Figure 3-5.
3-8
Distance to Fault Mode Soft Key Labels
DELETE
ALL
TRACES
BACK
Chapter 3 Functions and Operations
MARKER
8
M1
M2
ON/OFF
M3
EDIT
ON/OFF
M4
EDIT
MARKER
TO
PEAK
DELTA
M2 - M1
MARKER
TO
VALLEY
MARKER
TO
PEAK
BACK
ON/OFF
ON/OFF
EDIT
EDIT
DELTA
M4 - M1
MARKER
TO
VALLEY
DELTA
M3 - M1
MARKER
TO
PEAK
BACK
MARKER
TO
PEAK
MARKER
TO
VALLEY
MARKER
TO
VALLEY
BACK
ALL
OFF
BACK
Figure 3-6.
Marker Key Soft Key Labels
3-9
Chapter 3 Functions and Operations
SAVE
DISPLAY
RECALL
DISPLAY
9
Figure 3-7.
0
ABC
DEF
TOP
OF
LIST
GHI
JKL
PAGE
UP
MNO
PQR
PAGE
DOWN
STU
VWX
BOTTOM
OF
LIST
YZ
- . /
SPACE
DELETE
TRACE
BACK
SPACE
DELETE
ALL
TRACES
Save Display and Recall Display Soft Key Menus
SYS
OPTIONS
CLOCK
UNITS
PRINTER
FIXED
CW
SELF
TEST
HOUR
STATUS
MINUTE
CHANGE
DATE
FORMAT
MONTH
BIAS
TEE
DAY
YEAR
BACK
Figure 3-8.
3-10
SYS Key Soft Key Menus
Chapter 3 Functions and Operations
FREQ/DIST
Displays the frequency or distance menu depending on the measurement mode.
Frequency
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.
q F1
— Opens the F1 parameter for data entry. This is the start value for the
frequency sweep. Press ENTER when data entry is complete.
q F2
— Opens the F2 parameter for data entry. This is the stop value for the
frequency sweep. Press ENTER when data entry is complete.
Distance
Menu
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 corresponding values to be shown in the message area. Selected distance values may be
changed using the keypad or Up/Down arrow key.
q D1
— Opens the start distance (D1) parameter for data entry. This is the start
value for the distance range. Press ENTER when data entry is complete.
q D2
— Opens the end distance (D2) parameter for data entry. This is the end
value for the distance range. Press ENTER when data entry is complete.
q DTF AID
— Provides interactive help to optimize DTF set up parameters.
You will be prompted for system parameter values of maximum distance, frequency span, and propagation velocity.
q MORE
Distance
Sub-Menu
— 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.
q LOSS
— Opens the Cable Loss parameter for data entry. Enter the loss per
foot (or meter) for the type of transmission line being tested. Press ENTER
when data entry is complete. (Range is 0.000 to 5.000 dB/m)
q PROP VEL
(relative propagation velocity) — Opens the Propagation Velocity parameter for data entry. Enter the propagation velocity for the type of
transmission line being tested. Press ENTER when data entry is complete.
(Range is 0.010 to 1.000)
q 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 consists of up to 49 user-defined cable parameters downloaded via the Site Master Software Tools program.
q WINDOW
— Opens a menu of FFT windowing types for the DTF calculation. Scroll the menu using the Up/Down arrow key and make a selection
with the ENTER key.
3-11
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.
q BACK
3-12
— Returns to the Distance Menu.
Chapter 3 Functions and Operations
D is ta n c e T o F a u lt
-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
5
1 0
1 5
2 0
2 5
3 0
3 5
4 0
4 5
5 0
4 0
4 5
5 0
5 5
6 0
F e e t
Figure 3-9.
Rectangular Windowing Example
D is ta n c e T o F a u lt
-5
-1 0
-1 5
-2 0
-2 5
-3 0
R e tu rn L o s s (d B )
-3 5
-4 0
-4 5
-5 0
5
Figure 3-10.
1 0
1 5
2 0
2 5
3 0
F e e t
3 5
5 5
6 0
Nominal Side Lobe Windowing Example
3-13
Chapter 3 Functions and Operations
D is ta n c e T o F a u lt
-5
-1 0
-1 5
-2 0
-2 5
-3 0
R e tu rn L o s s (d B )
-3 5
-4 0
-4 5
-5 0
5
Figure 3-11.
1 0
1 5
2 0
2 5
3 0
3 5
F e e t
4 0
4 5
5 0
5 5
6 0
4 0
4 5
5 0
5 5
6 0
Low Side Lobe Windowing Example
D is ta n c e T o F a u lt
-5
-1 0
-1 5
-2 0
-2 5
-3 0
R e tu rn L o s s (d B )
-3 5
-4 0
-4 5
-5 0
5
Figure 3-12.
3-14
1 0
1 5
2 0
2 5
Minimum Side Lobe Windowing Example
3 0
F e e t
3 5
Chapter 3 Functions and Operations
AMPLITUDE
Displays the amplitude or scale menu depending on the measurement mode.
Amplitude
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 LIMIT key on the keypad will also call up this menu.
q TOP
— Opens the top parameter for data entry and provides for setting the
top scale value. Press ENTER when data entry is complete.
q BOTTOM
— Opens the bottom parameter for data entry and provides for setting the bottom scale value. Press ENTER when data entry is complete.
q LIMIT
— Opens the segment limit line selection table and the segment limit
line sub menu (see below). Use the Up/Down arrow key to select one of the
five segment limit lines. Press the ENTER key to select.
q LIMIT BEEP
— Toggles the Limit beep sound on or off. When on, the Site
Master sounds a beep when the measured value is above any of the segment
limit lines.
Segment
Limit Line
Sub-Menu
Provides for setting each of the five segment limit lines. Selected values may be
changed using the Up/Down arrow keys or the keypad.
q ON/OFF
— Toggles the selected segment limit line on or off.
q 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.
q 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 ENTER key when done scrolling, or press ESCAPE to revert to the previous value.
q FULL SPAN
— Span the selected segment limit line to the full frequency
display (F1 to F2).
NOTE:
The Start and Stop limit values remain at the segment limit line value.
q SELECT SEGMENT
— Opens the segment selection table. Use the
Up/Down arrow key to select the current active segment limit line on the display.
q BACK
SWEEP
— Returns to the Amplitude (or Limit) menu.
Displays the Sweep function soft key menu for the current operating mode.
3-15
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.
q 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.)
q SINGLE SWEEP
— Toggles the sweep between single sweep and continuous sweep. In single sweep mode, each sweep must be activated by the
RUN/HOLD button.
q 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.)
q 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 The trace overlay sub-menu is used to turn the trace overlay function on or off
Sub-Menu
and for selecting the overlay trace from memory.
q 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.
q 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:
q TOP OF LIST
— Move the selection cursor to the top (first) memory lo-
cation.
q PAGE UP
— Move the selection cursor to the top of the previous trace
memory location page. Each page contains 15 trace memory locations.
q PAGE DOWN
— Move the selection cursor to the top of the next trace
memory location page.
q BOTTOM OF LIST
— Move the selection cursor to the bottom (last)
memory location.
q DELETE TRACE
— Delete the selected trace from memory. This option
is not available when using Trace Overlay.
q DELETE ALL TRACES
— Delete all traces from memory. This option is
not available when using Trace Overlay.
q BACK
3-16
— Return to the Sweep menu.
Chapter 3 Functions and Operations
MARKER
Choosing MARKER causes the soft keys, below, to be displayed and the corresponding 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.
q M1
— Selects the M1 marker parameter and opens the Markers second level
menu.
q M2
— Selects the M2 marker parameter and opens the Markers second level
menu.
q M3
— Selects the M3 marker parameter and opens the Markers second level
menu.
q M4
— Selects the M4 marker parameter and opens the Markers second level
menu.
q ALL OFF
— Turns all markers off.
Markers
Provides for turning the selected marker on and off and for setting marker val(second level) ues. Selected frequency marker and distance marker values can be changed using the keypad or Up/Down arrow key.
Choosing M1, M2, M3, or M4 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.
q ON/OFF
— Turns the selected marker on or off.
q EDIT
— Opens the selected marker parameter for data entry. Press ENTER
when data entry is complete or ESCAPE to restore the previous value.
q DELTA (Mx-M1)
— Displays delta amplitude value for as well as delta frequency or distance for the selected marker with respect to the M1 marker.
q MARKER TO PEAK
— Places the selected marker at the frequency or distance with the maximum amplitude value.
q MARKER TO VALLEY
— Places the selected marker at the frequency or distance with the minimum amplitude value.
q BACK
— Returns to the Main Markers Menu.
3-17
Chapter 3 Functions and Operations
SYS
Displays the System menu softkey selections.
q OPTIONS
q CLOCK
— Displays a second level of functions.
— Displays a second level of functions.
q SELF TEST
q STATUS
Options
Sub-Menu
q UNITS
— Start an instrument self test.
— Displays instrument status.
— Select the unit of measurement (English or metric).
q PRINTER
— Displays a menu of supported printers. Use the Up/Down arrow
key and ENTER key to make the selection.
q FIXED CW
— Toggles the fixed CW function ON or OFF. When ON, sweep
time is reduced and immunity to RF interference is less. When OFF, (normal
mode) the unit provides maximum RF interference immunity.
q CHANGE DATE FORMAT
— Toggles the date format between MM/DD/YY,
DD/MM/YY, and YY/MM/DD.
q BIAS TEE
Clock
Sub-Menu
— Toggles Bias Tee on and off.
q 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.
q 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.
q MONTH
— Enter the month (1-12) using the Up/Down arrow key or the keypad. Press ENTER when data entry is complete or ESCAPE to restore the previous value.
q 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.
q 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.
q BACK
SAVE
DISPLAY
— 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 ENTER to complete the process.
The BACK SPACE softkey removes the currently highlighted letter in the trace
name.
3-18
Chapter 3 Functions and Operations
RECALL
DISPLAY
Recalls a trace from memory for viewing or to be used as a trace overlay. Selections are:
q TOP OF LIST
— Move the selection cursor to the top (first) memory loca-
tion.
q PAGE UP
— Move the selection cursor to the top of the previous trace
memory location page. Each page contains 15 trace memory locations.
q PAGE DOWN
— Move the selection cursor to the top of the next trace memory location page.
q BOTTOM OF LIST
— Move the selection cursor to the bottom (last) memory
location.
q DELETE TRACE
— Delete the selected trace from memory. This option is
not available when using Trace Overlay.
q DELETE ALL TRACES
— Delete all traces from memory. This option is not
available when using Trace Overlay.
3-19
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.
q UNITS
— Toggles between dBm and Watts.
q REL
— Turns relative mode OFF, if currently ON. If relative mode is currently OFF, turns it ON and causes the power level to be measured and saved
as the base level. Subsequent measurements are then displayed relative to this
saved value. With units of dBm, relative mode displays dBr; with units of
Watts, relative mode displays % (percent).
q OFFSET
— Turns Offset OFF, if currently ON. If Offset is currently OFF,
turns it ON and opens the Offset parameter for data entry. Press ENTER
when data entry is complete.
Offset is the attenuation (in dB) inserted in the line between the DUT and the
RF detector. The attenuation is added to the measured input level prior to display.
q ZERO
— Turns Zero OFF, if currently ON. If Zero is currently OFF, 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.
3-20
Chapter 3 Functions and Operations
Printing
Printing is accomplished by selecting an available printer and pressing the print key as described 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.
SEIKO
PRINTER
SERIAL CABLE
2000-1012
Site Master S251B
2
1
START
CAL
AUTO
SCALE
SAVE
SETUP
RECALL
SETUP
3
4
MARKER
8
7
SAVE
DISPLAY
625.0
MODE
ON
OFF
FREQ/DIST
AMPLITUDE
RECALL
DISPLAY
9
2500.0
1384.45 MHz
2096.66 MHz
HP 340
DESKJET
6
5
LIMIT
ESCAPE
CLEAR
ENTER
RUN
HOLD
+/-
0
PRINT
.
SYS
SWEEP
SERIAL-TO-PARALLEL
INTERFACE CABLE
2000-753
Figure 3-13.
Site Master Printer Setup
Step 2. Obtain the desired measurement display
Step 3. Press the SYS key and the OPTIONS soft key (Figure 3-14) .
OPTIONS
Site Master S251B
1
2
START
CAL
AUTO
SCALE
SAVE
SETUP
RECALL
SETUP
3
5
LIMIT
7
SAVE
DISPLAY
625.0
2500.0
1384.45 MHz
2096.66 MHz
MODE
Figure 3-14.
FREQ/DIST
9
ON
OFF
AMPLITUDE
ESCAPE
CLEAR
4
6
MARKER
8
RECALL
DISPLAY
0
ENTER
SYS
RUN
HOLD
+/-
PRINT
.
SYS
SWEEP
SYS Key and OPTIONS Soft Key
3-21
Chapter 3 Functions and Operations
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).
PRINTER
Site Master S251B
1
2
START
CAL
AUTO
SCALE
SAVE
SETUP
RECALL
SETUP
3
4
MARKER
8
7
SAVE
DISPLAY
1384.45 MHz
2096.66 MHz
MODE
Figure 3-15.
ON
OFF
FREQ/DIST
RECALL
DISPLAY
9
2500.0
PRINT
6
5
LIMIT
625.0
ESCAPE
CLEAR
0
ENTER
RUN
HOLD
+/-
PRINT
.
SYS
SWEEP
AMPLITUDE
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
1
2
3
4
5
6
7
8
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
Set the switches on the serial-to-parallel interface cable to all other printers as follows:
3-22
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
OFF
ON
OFF
OFF
OFF
OFF
ON
OFF
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
HOLD
Symbol
Site Master is in Hold for power conservation. To resume sweeping, press
the RUN/HOLD key. After 10 minutes without a key press, the Site Master
will automatically activate the power conservation mode.
ò dx
Integrator Failure
T
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 temperature. 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.
6
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 temperature is not within the specified operational range, Self Test will fail. If Self Test fails and
the battery is fully charged and the Site Master is within the specified operating range, call
your Anritsu Service Center.
3-23
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
Description
BATTERY LOW
Battery voltage is less than 9.5 volts. Charge battery. If condition persists, call your Anritsu Service Center.
EXTERNAL
POWER LOW
External supply voltage is less than 12.5 volts. Call your Anritsu Service Center
PLL FAILED
Phase-locked loops failed to lock. Charge battery. If condition persists
with a fully charged battery, call your Anritsu Service Center
INTEGRATOR
FAILED
Integration circuit could not charge to a valid level. Charge battery. If
condition persists with a fully charged battery, call your Anritsu Service Center.
EEPROM R/W
FAILED
Non-volatile memory system has failed. Call your Anritsu Service
Center.
OUT OF TEMP.
RANGE
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.
Note: A listing of current Anritsu service centers is given in Table 1-2 , page 1-8.
3-24
Chapter 3 Functions and Operations
Range Errors
A listing of Range Error messages is given in Table 3-3.
Table 3-3. Range Error Messages (1 of 2)
Description
Error Message
RANGE
ERROR:F1 > F2
The start (F1) frequency is greater than the stop (F2) frequency.
RANGE
ERROR:D1 > D2
The start (D1) distance is greater than the stop (D2) distance.
RANGE
ERROR:D2 >
DMax=xx.x m (ft)
The stop distance (D2) exceeds the maximum unaliased range. This
range is determined by the frequency span, number of points,
and relative propagation velocity:
(1.5 ´ 108) (dp) (V f )
(meters)
MaximumUnaliased Range =
F2 - F1
Where:
dp is the number of data points (128, 256, or 512)
Vf 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.
RANGE ERROR:
TOP<=BOTTOM
The SWR scale parameter top value is less than or equal to its bottom
value.
RANGE ERROR:
TOP>=BOTTOM
The RL scale parameter top value is greater than or equal to its bottom
value.
CAL
INCOMPLETE
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.
DIST REQUIRES
F1 < F2
Valid distance to fault plots require a non-zero frequency span.
DIST REQUIRES
CAL
Distance-to-fault measurements do not provide usable data with CAL
OFF.
NO STORED
SWEEP AT THIS
LOCATION
Attempting to recall a display from a location that has not been previously written to. That is, the location does not contain stored sweep.
USE OPTIONS
MENU TO
SELECT A
PRINTER
Attempting to print a display with no printer selected. Select a printer,
then retry.
DISTANCE AND
CABLE
INSERTION LOSS
MODE ARE
INCOMPATIBLE
DTF measurements only display RL or SWR versus distance.
CANNOT ZERO
NO DETECTOR
INSTALLED
Attempting to perform a Power Monitor zero adjust function with no
RF detector connected to the Site Master.
3-25
Chapter 3 Functions and Operations
Table 3-3.
Range Error Messages (2 of 2)
Error Message
Description
CANNOT ZERO
INPUT SIGNAL
TOO HIGH
Attempting to perform a Power Monitor zero adjust function with an
input of greater than –20 dBm.
POWER MONITOR
OPTION NOT
INSTALLED
Attempting to enter Power Monitor mode with no option 5 installed.
LIMIT SEGMENTS
CANNOT
OVERLAP
Segment limit lines are not allowed to overlap in frequency or distance.
EITHER STORED
SWEEP IS NOT
COMPATIBLE, OR
NO STORED
SWEEP AT THIS
LOCATION
Attempt to overlay a stored trace to the display from an empty location, or with a different measurement mode or setup than the current
display.
VERTICAL LIMIT
SEGMENTS ARE
NOT ALLOWED
Segment limit line does not support vertical limit lines.
NO EXTERNAL
POWER TO BATTERY
RECHARGER
PORT. BIAS TEE
CANNOT BE ACTIVATED.
Attempting to use the Bias Tee option without external power applied
to the battery recharge port.
BIAS TEE OPTION
NOT INSTALLED
Attempting to use the Bias Tee option when the option has not been
installed.
3-26
Chapter 3 Functions and Operations
Figure 3-16.
Maximum Distance and Resolution vs Frequency Span
3-27
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.
3-28
Using the Site Master Soft Carrying Case
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 characterize the magnitude of reflections present in a device or transmission line. CL measurements 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 display. 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 temperature 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 uncertainties have been minimized.
4-1
4
Chapter 4 Measurements
Power On Procedure
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) provided.
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.
OPEN
LOAD
SHORT
CALIBRATION
LOAD
TEST PORT CABLE (OPTIONAL)
TEST PORT CABLE (OPTIONAL)
RF IN TEST PORT
RF OUT TEST PORT
Site Master S251B
1
2
START
CAL
AUTO
SCALE
SAVE
SETUP
RECALL
SETUP
3
5
LIMIT
7
SAVE
DISPLAY
625.0
2500.0
1384.45 MHz
2096.66 MHz
MODE
Figure 4-1.
FREQ/DIST
9
ON
OFF
AMPLITUDE
ESCAPE
CLEAR
4
6
MARKER
8
RECALL
DISPLAY
0
ENTER
RUN
HOLD
+/-
PRINT
.
SYS
SWEEP
One-port Measurement Calibration Setup
Step 1. Press the MODE key.
Step 2. Use the Up/Down arrow key to scroll to FREQ - SWR or RETURN LOSS for
OSL calibration; or scroll to INSERTION LOSS (+6 dBm) or INSERTION GAIN
(–30 dBm) measurement mode for OSLT calibration..
4-2
Chapter 4 Measurements
Step 3. Press the ENTER key to select the measurement mode.
LOAD
OPEN
TEST PORT CABLE
(OPTIONAL)
SHORT
LOAD
TEST PORT CABLE
(OPTIONAL)
RF IN TEST PORT
RF OUT TEST PORT
Site Master S251B
1
2
START
CAL
AUTO
SCALE
SAVE
SETUP
RECALL
SETUP
3
5
LIMIT
7
SAVE
DISPLAY
625.0
2500.0
1384.45 MHz
2096.66 MHz
MODE
Figure 4-2.
FREQ/DIST
9
ON
OFF
AMPLITUDE
ESCAPE
CLEAR
4
6
MARKER
8
RECALL
DISPLAY
0
ENTER
RUN
HOLD
+/-
PRINT
.
SYS
SWEEP
Two-Port Measurement Calibration Setup
Selecting the Frequency Range
The following procedure selects the frequency range for the calibration.
Step 4. Press the FREQ/DIST key.
Step 5. Press the F1 soft key.
Step 6. Enter 6, 2, 5 or a user-defined frequency using the key pad or the Up/Down arrow key.
Step 7. Press ENTER to set F1 to 625 MHz or the user-defined frequency.
Step 8. Press the F2 soft key.
Step 9. Enter 2, 5, 0, 0 or a user-defined frequency using the keypad or the Up/Down arrow 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 frequency 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 describe OSL calibration, while steps 16 and 17 apply only to OSLT calibration.
Step 12. Press the START CAL key. The message “CONNECT OPEN TO RF OUT
PORT” will appear in the display.
Step 13. Connect the calibrated Open and press the ENTER key. The messages “Measuring OPEN” and “CONNECT SHORT TO RF OUT” will appear.
Step 14. Remove the Open, connect the calibrated Short and press the ENTER key. The
messages “MEASURING SHORT” and “CONNECT LOAD TO RF OUT” will
appear.
4-3
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 ENTER
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 AMPLITUDE or LIMIT key to call up the Scale menu.
Step 2. In SWR mode, press the TOP soft key and enter 1, ., 1 using the key pad or the
Up/Down arrow key, and press ENTER. (In Return Loss mode, enter 0; in Insertion Gain/Loss mode, enter 100.)
Step 3. In SWR mode, press the BOTTOM soft key and enter 1 using the key pad or the
Up/Down arrow key, and press ENTER. (In Return Loss mode, enter 54; in Insertion 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 calibration 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 SWEEP key, followed by the
RESOLUTION soft key. Select 130, 259, or 517 data points.
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.
4-4
Chapter 4 Measurements
Step 2. Select the desired setup using the Up/Down arrow key and press ENTER to recall the display.
Saving a Display to Memory
The following procedure saves a display to memory.
Step 1. Press the SAVE DISPLAY key to activate the alphanumeric menu for trace storage.
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 necessary to enter the entire name, then press ENTER to complete the process.
NOTE: More than one trace can be saved using the same alphanumeric name,
as traces are stored chronologically, using the time/date stamp.
Recalling a Display From Memory
The following procedure recalls a previously saved display from memory.
Step 1. Press the RECALL DISPLAY key.
Step 2. Select the desired display using the Up/Down arrow key and press ENTER to recall the display.
Figure 4-4.
SWR Measurement Mode Calibration Results
4-5
Chapter 4 Measurements
Figure 4-5.
4-6
Insertion Loss Mode Calibration Results (Loads at RF Out and RF In)
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
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.
4-8
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
or
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
Vg
Return Loss
SWR
15NNF50-1.5A
0.4 dB @ 625 MHz
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
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 FREQ-SWR or FREQ-RETURN LOSS.
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.
Step 7. Enter 6, 2, 5 using the key pad or the Up/Down arrow key.
Step 8. Press ENTER to set F1 to 625 MHz.
Step 9. Press the 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 frequency start and stop values (F1 = 625 MHz, F2 = 2500 MHz).
4-9
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 calibration steps.
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 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 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.
4-10
Chapter 4 Measurements
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.
OPEN
SHORT
CALIBRATION
LOAD
SHORT
LOAD
MEASUREMENT
RFOUT/REFLECTION
TEST PORT
Site Master S251B
1
2
START
CAL
AUTO
SCALE
SAVE
SETUP
RECALL
SETUP
3
5
LIMIT
7
SAVE
DISPLAY
625.0
2500.0
1384.45 MHz
2096.66 MHz
MODE
Figure 4-9.
FREQ/DIST
9
ON
OFF
AMPLITUDE
ESCAPE
CLEAR
4
6
MARKER
8
RECALL
DISPLAY
ENTER
RUN
HOLD
0
+/-
PRINT
.
SYS
SWEEP
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.
Set the Amplitude Scale and Limit Line
The following procedure sets the top and bottom scale display.
Step 18. Press the AMPLITUDE or LIMIT key to call up the Scale Menu.
Step 19. In SWR mode, press the TOP soft key and enter 1, ., 3 using the keypad or
Up/Down arrow key. Press ENTER to set the top scale. (In Return Loss mode,
enter 0.)
Step 20. In SWR mode, press the BOTTOM soft key and enter 1 using the keypad or
Up/Down arrow key. Press ENTER to set the bottom scale. (In Return Loss
mode, enter 5, 4.)
Step 21. Press the LIMIT soft key to activate the segment limit line table.
Step 22. Use the Up/Down arrow key to scroll to segment #1 and press the EDIT
SEGMENT soft key to change the parameter values for segment #1.
Step 23. Use the Up/Down arrow key to scroll to the START FREQ parameter and press
ENTER to edit the value.
4-11
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 START FREQ LIMIT parameter and
press ENTER to edit the value.
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 STOP FREQ parameter and press
ENTER to edit the value.
Step 28. Enter 2, 5, 0, 0 using the key pad or the Up/Down arrow key. Press ENTER to
set the Stop Frequency to 2500 MHz.
Step 29. Use the Up/Down arrow key to scroll to the STOP FREQ LIMIT parameter and
press ENTER to edit the value.
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.
4-12
Chapter 4 Measurements
Setting the Markers
The following procedure sets the markers.
Step 32. Press the MARKER key to call up the Markers menu.
Step 33. Press the M1 soft key to select the M1 marker function. Press the EDIT soft key
and enter 8, 2, 4 using the keypad or Up/Down arrow key. Press ENTER to set
M1 to 824 MHz. (Note: pressing the ON/OFF soft key activates or deactivates
the M1 marker function.)
Step 34. Press the BACK soft key to return to the Markers menu.
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.
Figure 4-10.
Cable SWR Measurement Results
Figure 4-11.
Cable Return Loss Measurement Results
4-13
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 performed 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 MODE key.
Step 38. Use the Up/Down arrow key to scroll to CABLE LOSS - ONE PORT.
Step 39. Press 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.
Press ENTER to set the top scale.
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 AUTO SCALE
key.
Setting the Segment Limit LInes
The following procedure sets the segment limit lines.
Step 43. Press the AMPLITUDE or LIMIT key to call up the Segment Limit Line menu.
Step 44. Press the 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 EDIT SEGMENT soft key to change the parameter values for segment #1.
Step 46. Use the Up/Down arrow key to scroll to the START FREQ parameter and press
ENTER to edit the value.
Step 47. Enter 8, 2, 4 using the key pad or the Up/Down arrow key. Press ENTER to set
the Start Frequency to 824 MHz.
Step 48. Use the Up/Down arrow key to scroll to the START FREQ LIMIT parameter and
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 STOP FREQ parameter and press
ENTER to edit the value.
4-14
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 STOP FREQ LIMIT parameter and
press ENTER to edit the value.
Step 53. Enter ., 5, 5. Press ENTER to set the Stop Frequency Limit value.
Step 54. Press ENTER at OK to accept the values and activate the Segment 1 limit line.
Step 55. Press the SELECT SEGMENT soft key and use the Up/Down arrow key to scroll
to segment #2. Press the EDIT SEGMENT soft key to change the parameter values 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.
4-15
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
or
Precision Open/Short/Load, Anritsu OSLN50LF
·
Test Port Extension Cable, Anritsu 15NNF50-1.5A
Device-Under-Test Specification
Type
Typical Loss @1.5m
Vg
Return
Loss
SWR
15NNF50-1.
5A
0.4 dB @ 625 MHz
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
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 DTF-SWR or DTF-RETURN LOSS.
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 £ Dmax (as defined by
F2 and F1).
The number of data points (resolution) will automatically adjust according to the
length of D2.
Step 5. Use the Up/Down arrow key to scroll to D2, then press ENTER to select the cable length.
Step 6. Enter 2 using the keypad or the Up/Down arrow key. Press ENTER to set D2 to
2.0 meters.
4-16
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 ENTER to set
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 CABLE
FUNCTION from the DTF AID parameter table.
Step 12. Enter ., 8, 6 and press ENTER to set the Propagation Velocity to 0.86.
Step 13. Press ENTER to start the calibration.
NOTE:
If the calibration is valid, scroll to CALIBRATION VALID–CONTINUE and press
ENTER. If calibration is necessary, proceed to the calibration instructions.
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 connect the respective calibration components to the Site Master test port. (Refer to
the calibration procedure on page 4-3.)
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 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 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.
4-17
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 RES in the
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.
Step 18. In SWR mode, press the TOP soft key and enter 3, 0 using the keypad or
Up/Down arrow key. Press ENTER to set the top scale. (In Return Loss mode,
enter 0.)
Step 19. In SWR mode, press the BOTTOM soft key and enter 1 using the keypad or
Up/Down arrow key. Press ENTER to set the bottom scale. (In Return Loss
mode, enter 54.)
Setting the Marker
Step 20. Press the MARKER key to call up the Markers menu.
Step 21. Press the M1 soft key to select the M1 marker function. (Note: pressing the
ON/OFF soft key activates or deactivates the M1 marker function.)
Step 22. Press the MARKER TO PEAK soft key to find the cable length.
Step 23. Press the BACK soft key or the ESCAPE key to return to the previous menu.
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.
4-18
Chapter 4 Measurements
Figure 4-13.
DTF - SWR Measurement Results (cable length)
Figure 4-14.
DTF - RETURN LOSS Measurement Results (cable length)
4-19
Chapter 4 Measurements
DTF Measurement (Determining the quality of the cable.)
NOTE:
If cable length measurement has not been done, calibration must be done before 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 TOP soft key and enter 1, ., 0, 5 using the keypad or
Up/Down arrow key. Press ENTER to set the top scale. (In Return Loss mode,
enter 20.)
Step 27. In SWR mode, press the BOTTOM soft key and enter 1 using the keypad or
Up/Down arrow key. Press ENTER to set the bottom scale. (In Return Loss
mode, enter 54.)
Setting the Markers
Step 28. Press the MARKER key to call up the Markers menu.
Step 29. Press the M2 soft key to select the M2 marker function. (Note: pressing the
ON/OFF soft key activates or deactivates the M2 marker function.)
Step 30. Press the MARKER TO PEAK soft key to find the maximum SWR or Return
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.
4-20
Chapter 4 Measurements
Figure 4-15.
DTF - SWR Measurement Results (cable quality)
Figure 4-16.
DTF - RETURN LOSS Measurement Results (cable quality)
4-21
Chapter 4 Measurements
Insertion Gain (Amplifier) Measurement
The following frequency domain measurement is an example of a Insertion Gain (Amplifier) 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 INSERTION GAIN (–30 dBm). Press
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 ENTER to set
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 ENTER to set F2
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.
4-22
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
OPEN
TEST PORT CABLE
(OPTIONAL)
SHORT
LOAD
TEST PORT CABLE
(OPTIONAL)
RF IN TEST PORT
RF OUT TEST PORT
Site Master S251B
1
2
START
CAL
AUTO
SCALE
SAVE
SETUP
RECALL
SETUP
3
5
LIMIT
7
SAVE
DISPLAY
625.0
2500.0
1384.45 MHz
2096.66 MHz
MODE
Figure 4-17.
FREQ/DIST
9
ON
OFF
AMPLITUDE
ESCAPE
CLEAR
4
6
MARKER
8
RECALL
DISPLAY
0
ENTER
RUN
HOLD
+/-
PRINT
.
SYS
SWEEP
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
4-23
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
A
n
t
T
x
P
C
\R
S
F
A
m
p
Step 13. Connect the amplifier to the test port extension cables as shown in Figure 4-20.
TEST PORT CABLE
(OPTIONAL)
TEST PORT CABLE
(OPTIONAL)
RF IN TEST PORT
RF OUT TEST PORT
Site Master S251B
1
2
START
CAL
AUTO
SCALE
SAVE
SETUP
RECALL
SETUP
3
5
LIMIT
7
SAVE
DISPLAY
625.0
2500.0
1384.45 MHz
2096.66 MHz
MODE
Figure 4-20.
FREQ/DIST
9
ON
OFF
AMPLITUDE
ESCAPE
CLEAR
4
6
MARKER
8
RECALL
DISPLAY
0
ENTER
RUN
HOLD
+/-
PRINT
.
SYS
SWEEP
Amplifier Gain Measurement Setup
Setting the Markers
Step 14. Press the MARKER key to call up the Markers menu.
Step 15. Press the M1 soft key to select the M1 marker function.
4-24
Chapter 4 Measurements
Step 16. Press the EDIT soft key and enter 1, 8, 8, 5 using the keypad or Up/Down Arrow
key. Press ENTER to set M1 to 1885 MHz.
NOTE:
Pressing the ON/OFF soft key activates or deactivates the M1 marker function.
Step 17. Press the BACK soft key to return to the Markers menu.
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).
Figure 4-21.
Measurement Display Showing Bypass Condition
Activating the Bias Tee
Step 19. Press the SYS key.
Step 20. Press the OPTIONS soft key, then the BIAS TEE soft key to activate the Bias
Tee.
NOTE:
The Site Master must have Option 10A installed and the battery charger must
be connected for the bias tee to activate.
Setting the Amplitude Scale
Step 21. Press the AMPLITUDE or LIMIT key to call up the Scale menu.
Step 22. Press the TOP soft key and enter 1, 5 using the keypad or Up/Down arrow key.
Press ENTER to set the top scale to 15.
4-25
Chapter 4 Measurements
Step 23. Press the BOTTOM soft key and enter 9, 0 – using the keypad or Up/Down arrow key. Press ENTER to set the bottom scale to –90.
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.
Figure 4-22.
Measurement Display of Amplifier Gain
Step 24. Press the MARKER key to display the marker value.
NOTE:
Refer to page 4-4 for instructions on saving and recalling a setup or display.
4-26
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 POWER MONITOR. Press ENTER to
select power monitor mode.
Zeroing the Power Monitor
Step 3. With no power applied to the DUT, press the ZERO soft key from the Power
menu. Wait a few seconds while the Site Master accumulates samples of the quiescent power level. When complete, ZERO ADJ: ON is displayed in the message
area.
Measuring High Input Power Levels
Step 4. Insert an attenuator between the DUT and the RF detector, sufficient to insure
that the input power to the Site Master is no greater the 20 dBm.
Step 5. Press the OFFSET soft key.
Step 6. Enter the attenuation in dB using the keypad. Press ENTER to complete the entry. The message area will show OFFSET is ON along with the entered value in
dB.
Displaying Power in dBm and Watts
Step 7. Press the UNITS soft key to display power in Watts.
Displaying Relative Power
Step 8. With the desired base power level input to the Site Master, press the REL soft
key. The message area will show REL: ON and the power reading will indicate
100%.
Step 9. Press the UNITS soft key to display power in dBm. Since REL is ON, the power
reading will be in dBr, relative to the base power level.
4-27/4-28
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 information.
Changing COM Port Settings–Windows 95/98/NT
Step 1. Open the Windows Control Panel.
Step 2. Double click on the SYSTEM icon. The System Properties window appears.
Step 3. Select Device Manager. The Device List appears.
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
Port Properties window appears.
NOTE:
If Windows doesn't show any available COM Ports, consult your computer
manufacturer.
5-1
5
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 Resource and verify the COM Port Base Address and IRQ. Click OK
when done.
Step 8. Click 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.
5-2
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 procedure is given below.
Step 9. Insert the Anritsu Site Master Software Tools For Windows disk in the CDROM
drive.
Step 10. Select Run under the Start menu.
Step 11. Type x:\SETUP, where x = the drive letter of the CDROM drive.
Step 12. Press the Enter key to select the default directory C:\Program Files\Site Master
Software Tools\ and begin the Setup routine.
Step 13. When the Setup program prompts, select OK or press the Enter key to restart
Windows.
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 Master Help,” and “Site Master Software Tools.”
Step 14. Double-click on the “Read Me” icon to read about recent changes that did not
get into this manual and important features or problems that you should know
about.
Step 15. Double-click on the “Site Master Help” icon to acquaint yourself with the comprehensive on-line manual. This manual provides descriptive narrative for the
various program features and controls.
Step 16. Double-click on the “Site Master Software Tools ” icon to open the Software
Tools program.
Step 17. Click on Settings, in the top menu bar, and select COM Port. Enter the appropriate COM port number for the serial interface cable (null modem type).
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.
5-3
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
1
2
START
CAL
AUTO
SCALE
SAVE
SETUP
RECALL
SETUP
3
5
LIMIT
7
SAVE
DISPLAY
625.0
2500.0
1384.45 MHz
2096.66 MHz
MODE
Figure 5-2.
FREQ/DIST
9
ON
OFF
AMPLITUDE
ESCAPE
CLEAR
4
6
MARKER
8
RECALL
DISPLAY
0
ENTER
RUN
HOLD
+/-
PRINT
.
SYS
COM port
(Program defaults to COM2)
SWEEP
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 OK.
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.
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 Start Plot Capture icon or click on Capture, in the top menu bar,
and select 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.
5-4
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 Start, Programs, Site Master Software
Tools 32 bit and Cable Editor.
Alternatively, open the Site Master Software Tools program, click on Tools in
the top menu bar and select Cable Editor from the drop-down menu.
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 Upload Cable List icon or click on Tools, in the top menu bar, and
select Upload Cable List.
Step 5. When the message box appears on the screen click OK to the cable upload warning and 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 Query Cable List icon, or click on Tools in the top menu bar and
select Query Cable List.
Step 3. When the status message box appears on the screen, click 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
as from the drop-down menu.
5-5
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 Plot Properties icon, or select Plot Properties under the View
menu to make these changes.) The operation of the various menus that allow these operations to be accomplished is straightforward. To read about the operation of the menus, refer
to the on-line help screens, accessed from the Help menu in the top menu bar.
Fault Location Software
A captured RL or SWR trace can be transformed to a Distance to Fault display. This is useful for determining the location of faults, connections, and other discontinuities within the
cable.
To transform a plot, select Distance to Fault from the Tools menu (or click on the Distance
to Fault icon in the toolbar). A drop down menu will appear that asks you if the DUT is coaxial cable or waveguide.
If coaxial cable is selected, it asks you to supply start and stop distances along with the cable 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 Default Plot Settings under the Settings menu
and changing Measurement Units.
After supplying the needed information and clicking OK, a new plot will open showing
coax match vs. distance.
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).
5-6
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 Save
as Metafile from the drop down menu.
To save a plot as a text file to use in a spreadsheet, click on File in the top menu bar and select Export to text file for Spreadsheet from the drop down menu.
Pasting a Plot in Graphic or Spreadsheet Format
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 Clipboard Format from the top menu bar and pull-down
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 Copy Plot Data icon or Copy
from the Edit menu.
Step 4. To paste to a graphic application, open the application and select Paste from the
application’s Edit menu.
Step 5. To paste to a spreadsheet, open the spreadsheet program and place the cursor
where the first data point should appear.
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 File, in the top menu bar, and select Save Plot to Database from the drop-down menu.
“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.
5-7
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 positions of components (connectors, adapters, and lightning arresters) will cause different reflections at differing positions in the transmission line. Variations in the “signature”
between maintenance intervals offer a good indication of damage or damage causing conditions.
Printing
Captured traces may be printed from a PC using Site Master Software Tools. Once a captured trace has been downloaded choose Print under the File menu for printing options. The
printer setup can be altered, plots can be scaled, and multiple plots can be printed from the
Print dialog box.
5-8
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
Relative Propagation Velocity (Vf )
RG8, 8A
RG9, 9A
RG17, 17A
RG55, 55A, 55B
RG58, 58B
RG58A, 58C
RG142
RG174
RG178B
RG188
RG213
RG214
RG223
FSJ1-50A
FSJ2-50
FSJ4-50B
LDF4-50A
LDF5-50A
LDF6-50
LDF7-50A
LDF12-50
HJ4-50
HJ4.5-50
HJ5-50
HJ7-50A
LMR100
LMR200
LMR240
LMR400
LMR500
0.659
0.659
0.659
0.659
0.659
0.659
0.690
0.660
0.690
0.690
0.660
0.659
0.659
0.840
0.830
0.810
0.880
0.890
0.890
0.880
0.880
0.914
0.920
0.916
0.921
0.800
0.830
0.840
0.850
0.860
Nominal Attenuation
dB/m @ 1000 MHz
0.262
0.289
0.180
0.541
0.558
0.787
0.443
0.984
1.509
1.017
0.292
0.292
0.535
0.197
0.134
0.119
0.077
0.043
0.032
0.027
0.022
0.087
0.054
0.042
0.023
0.792
0.344
0.262
0.135
0.109
A-1
Appendix A Reference Data
Table A-1.
Coaxial Cable Technical Data (2 of 2)
Cable Type
Relative Propagation Velocity (Vf )
LMR600
LMR900
LMR1200
LMR1700
HCC12-50J
HCC78-50J
HCC158-50J
HCC300-50J
HCC312-50J
HF 4-1/8" Cu2Y
HF 5" Cu2Y
HF 6-1/8" Cu2Y
FLC 38-50J
FLC 12-50J
FLC 78-50J
FLC 114-50J
FLC 158-50J
CR50 540PE
CR50 1070PE
310801
311201
311501
311601
311901
352001
0.870
0.870
0.880
0.890
0.915
0.915
0.950
0.960
0.960
0.970
0.960
0.970
0.880
0.880
0.880
0.880
0.880
0.880
0.880
0.820
0.800
0.800
0.800
0.800
0.800
A-2
Nominal Attenuation
dB/m @ 1000 MHz
0.087
0.056
0.044
0.033
0.042
0.042
0.023
0.014
0.013
0.010
0.007
0.006
0.115
0.075
0.045
0.034
0.029
0.070
0.038
0.115
0.180
0.230
0.262
0.377
0.377
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