Anritsu S251B User Manual

Site MasterModel S251BAntenna andCable AnalyzerUser's GuideHand-Held Tester for Transmission Linesand other RF Components

1-4Chapter 1 General InformationSpecifications are valid when the unit is calibrated at ambient temperature after a 5 minutewarmup.DescriptionValueSit

1-5Chapter 1 General InformationBias Teeinput voltage:output current:12.5 to 15.0 Vdc270 ma maximum surge, 25 ms240 ma maximum steadyGeneralInternal M

Preventive MaintenanceSite Master preventive maintenance consists of cleaning the unit and inspecting and clean-ing the RF connectors on the instrumen

CalibrationThe Site Master is a field portable unit operating in the rigors of the test environment. AnOpen-Short-Load (OSL) or Open-Short-Load-Throug

1-8Chapter 1 General InformationUNITED STATESANRITSU COMPANY685 Jarvis DriveMorgan Hill, CA 95037-2809Telephone: (408) 776-8300,1-800-ANRITSUFAX: 408-

Chapter 2Getting StartedIntroductionThe Nickel Metal Hydride (NiMH) Battery supplied with the Site Master is shipped in adischarged state. Before usin

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 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

·With a new NiMH battery, full performance is achieved after three to five completecharge and discharge cycles.·Use only Anritsu approved battery pack

Chapter 3Functions and OperationsIntroductionThis chapter provides a brief overview of the Site Master functions and operations, provid-ing the user w

WARRANTYThe Anritsu product(s) listed on the title page is (are) warranted against defects inmaterials and workmanship for one year from the date of s

Test Connector PanelThe 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

Keypad ControlsThis section contains an alphabetical listing of the Site Master front panel keypad controlsalong with a brief description of each. Mor

ONOFFTurns the Site Master on or off. When turned on, the system state at the lastturn-off is restored. If theESCAPE/CLEAR key is held down, the facto

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

Soft KeysEach keypad key opens a set of soft key selections. Each of the soft keys has a correspond-ing soft key label area on the display. The label

3-7Chapter 3 Functions and OperationsMODE=POWER MONITOR:SOFTKEYS:UNITSRELOFFSETZEROFigure 3-4. Power Monitor Mode Soft Key Labels

3-8Chapter 3 Functions and OperationsFREQ/DISTD2DTF AIDMORED1LOSSCABLEWINDOWBACKPROPVELON/OFFEDITSEGMENTSCROLLSEGMENTFULLSPANSELECTSEGMENTBACKBOTTOMLI

3-9Chapter 3 Functions and OperationsM1M2M3M4ALLOFFMARKER8ON/OFFON/OFFON/OFFON/OFFEDITEDITEDITEDITDELTAM2-M1DELTAM3-M1DELTAM4-M1MARKERTOPEAKMARKERTOPE

3-10Chapter 3 Functions and OperationsABCDEFGHIJKLMNOPQRSTUVWXYZ-./SPACEBACKSPACESAVEDISPLAY9TOPOFLISTPAGEUPPAGEDOWNBOTTOMOFLISTDELETETRACEDELETEALLTR

FREQ/DIST Displays the frequency or distance menu depending on the measurement mode.FrequencyMenuProvides for setting sweep frequency end points whenF

NOTE: Using windowing:The theoretical requirement for inverse FFT is for the data to extend from zerofrequency to infinity. Side lobes appear around a

3-13Chapter 3 Functions and OperationsFeet51015202530 35 4045 5055 60-5-1 0-1 5-2 0-2 5-3 0-3 5-4 0-4 5-5 0R e tu rn L o s s (d B )D istance To Faul

3-14Chapter 3 Functions and OperationsD istance To Fault5101520 25 30Feet35 40 4550 5560-5-1 0-1 5-2 0-2 5-3 0-3 5-4 0-4 5-5 0R e tu rn L o s s (d B

AMPLITUDE Displays the amplitude or scale menu depending on the measurement mode.AmplitudeMenuProvides for changing the display scale and selects segm

Sweep Menu Provides for changing the display resolution, single or continuous sweep, andaccess to the Trace Math functions.ChoosingSWEEP in FREQ or DT

MARKER Choosing MARKER causes the soft keys, below, to be displayed and the corre-sponding values to be shown in the message area. Selected frequency

SYS Displays the System menu softkey selections.qOPTIONS — Displays a second level of functions.qCLOCK — Displays a second level of functions.qSELF TE

RECALLDISPLAYRecalls a trace from memory for viewing or to be used as a trace overlay. Selec-tions are:qTOP OF LIST — Move the selection cursor to the

Power Monitor MenuSelecting POWER MONITOR from the Mode menu causes the soft keys, described below,to be displayed and the corresponding values shown

PrintingPrinting is accomplished by selecting an available printer and pressing the print key as de-scribed below. Refer to the particular printer ope

Table of ContentsChapter 1 - General Information 1-1Introduction...1-1Description ...1-1

Step 4. Press the PRINTER soft key and select from the displayed menu of supportedprinters.Step 5. Press thePRINT key. (Figure 3-15).Printer Switch Se

SymbolsTable 3-1 provides a listing of the symbols used as condition indicators on the LCD display.Self TestAt turn-on, the Site Master runs through a

Error CodesSelf Test ErrorsA listing of Self Test Error messages is given in Table 3-2.3-24Chapter 3 Functions and OperationsError MessageDescriptionB

Range ErrorsA listing of Range Error messages is given in Table 3-3.3-25Chapter 3 Functions and OperationsError MessageDescriptionRANGEERROR:F1 > F

3-26Chapter 3 Functions and OperationsError MessageDescriptionCANNOT ZEROINPUT SIGNALTOO HIGHAttempting to perform a Power Monitor zero adjust functio

3-27Chapter 3 Functions and OperationsFigure 3-16. Maximum Distance and Resolution vs Frequency Span

Using the Soft Carrying CaseThe soft carrying case has been designed such that the strap can be unsnapped to allow thecase to be easily oriented horiz

Chapter 4MeasurementsIntroductionThis chapter provides a description of the Site Master measurement functions and examplesof frequency domain, distanc

Power On ProcedureThe Site Master is designed specifically for field environments and applications requiringmobility. As such, it is a lightweight, ha

Step 3. Press the ENTER key to select the measurement mode.Selecting the Frequency RangeThe following procedure selects the frequency range for the ca

Selecting the Frequency Range ...4-3Performing a Calibration ...4-3Setting the Amplitude Scale ...

Step 15. Remove the Short, connect the calibrated Load and press the ENTER key. Themessage “MEASURING LOAD ” will appear.NOTE:For OSLT calibration, th

Step 2. Select the desired setup using the Up/Down arrow key and press ENTER to re-call the display.Saving a Display to MemoryThe following procedure

4-6Chapter 4 MeasurementsFigure 4-5. Insertion Loss Mode Calibration Results (Loads at RF Out and RF In)

4-7Chapter 4 MeasurementsFigure 4-6. Insertion Loss Mode Calibration Results (Loads at RF Out and RF In)Figure 4-7. Insertion Gain Mode Calibration Re

NOTES: For best calibration results–compensation for all measurement systemuncertainties–ensure that the Open/Short/Load is at the end of the test por

SWR (Return Loss) and Cable Loss MeasurementThe following frequency domain measurement is an example of a Standing Wave Ratio (orReturn Loss) and Cabl

Performing a CalibrationStep 13. Press the START CAL key. Follow the instructions that appear in the messagearea.Step 14. Connect the Open, Short, and

SWR or Return Loss MeasurementStep 15. Disconnect the Load and connect the test port extension cable to the Site Mastertest port.Step 16. Connect the

Step 24. Enter 6, 2, 5 using the key pad or the Up/Down arrow key. Press ENTER to setthe Start Frequency to 625 MHz.Step 25. Use the Up/Down arrow key

Setting the MarkersThe following procedure sets the markers.Step 32. Press theMARKER key to call up the Markers menu.Step 33. Press theM1 soft key to

Chapter 5 - Software Tools Program 5-1Description ...5-1Requirements ...5-1Communication

Cable Loss MeasurementThe following frequency domain measurement is an example of a Cable Loss measurementmade over a selectable frequency range follo

Step 51. Enter 9, 6, 0 using the key pad or the Up/Down arrow key. Press ENTER to setthe Stop Frequency to 960 MHz.Step 52. Use the Up/Down arrow key

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

Step 7. Use the Up/Down arrow key to scroll to F1, then press ENTER to select the startfrequency F1.Step 8. Enter 6, 2, 5 using the keypad or the Up/D

DTF Measurement (Determining the Length of the Cable)Step 15. Disconnect the Load and connect the test port extension cable to the Site Mastertest por

4-19Chapter 4 MeasurementsFigure 4-13. DTF - SWR Measurement Results (cable length)Figure 4-14. DTF - RETURN LOSS Measurement Results (cable length)

DTF Measurement (Determining the quality of the cable.)NOTE:If cable length measurement has not been done, calibration must be done be-fore determinin

4-21Chapter 4 MeasurementsFigure 4-15. DTF - SWR Measurement Results (cable quality)Figure 4-16. DTF - RETURN LOSS Measurement Results (cable quality)

Insertion Gain (Amplifier) MeasurementThe following frequency domain measurement is an example of a Insertion Gain (Ampli-fier) measurement over a sel

Step 11. Connect the Open, Short, Loads, and through adapter to the test port extensioncable and press theENTER key as prompted. Refer to the Calibrat

Chapter 1General InformationIntroductionThis chapter provides a description, performance specifications, optional accessories, pre-ventive maintenance

Amplifier Gain MeasurementStep 12. Disconnect the 7/16(f) adapter. The resulting display should be similar to Figure4-19Step 13. Connect the amplifier

Step 16. Press the EDIT soft key and enter 1, 8, 8, 5 using the keypad or Up/Down Arrowkey. PressENTER to set M1 to 1885 MHz.NOTE:Pressing theON/OFF s

Step 23. Press the BOTTOM soft key and enter 9, 0 – using the keypad or Up/Down ar-row key. PressENTER to set the bottom scale to –90.Observe the disp

Making Power MeasurementsPower measurement is accomplished using a broadband (1 MHz to 3000 MHz) RF detector,P/N 5400-71N50. The power monitor display

Chapter 5Software ToolsProgramDescriptionThe Site Master Software Tools program provides the means for transferring the measuredtrace, along with any

Step 6. Choose Port Settings, then change to the following settings if necessary.Baud Rate: 9600Data Bits: 8Parity: NoneStop Bits: 1Flow Control: None

Software InstallationThe Site Master Software Tools program is a conventional Microsoft Windows program.Installation is similar to all other such prog

Capture multiple traces to a databaseStep 1. Connect the supplied cable as shown in Figure 5-2.Step 2. Open the Site Master Software Tools program.Ste

Custom Cable List Uploading and DownloadingCustom cable parameters can be uploaded to the Site Master or downloaded from the SiteMaster and saved via

Program OperationThe captured trace on the PC can be scaled and have its limit line, markers, and propertieschanged. (Click on thePlot Properties icon

The following items are supplied with the basic hardware.·Soft Carrying Case·AC-DC Adapter·Automotive Cigarette Lighter 12 Volt DC Adapter,·CDROM disk

Saving a Plot as a Windows Metafile or as aSpreadsheet FilePlots can be saved as Windows metafile (.wmf) or as a text file (.txt). The metafile may be

Each cable/antenna tends to have a unique Distance-To-Fault (DTF) “Signature” becausediffering cable electrical lengths, cable types, dielectric thick

Appendix AReference DataCoaxial Cable Technical DataTable A-1 provides a standard listing of common coaxial cables along with their “RelativePropagati

A-2Appendix A Reference DataCable TypeRelative Propagation Velocity (Vf)Nominal AttenuationdB/m @ 1000 MHzLMR600 0.870 0.087LMR900 0.870 0.056LMR1200

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