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Anritsu S251B 3-25, Range Errors, MaximumUnaliased Range, Vf is the relative propagation velocity

Models: S251B

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Range Errors

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)

Error Message	Description
RANGE	The start (F1) frequency is greater than the stop (F2) frequency.
ERROR:F1 > F2
RANGE	The start (D1) distance is greater than the stop (D2) distance.
ERROR:D1 > D2
RANGE	The stop distance (D2) exceeds the maximum unaliased range. This
ERROR:D2 >	range is determined by the frequency span, number of points,
DMax=xx.x m (ft)	and relative propagation velocity:
		(1.5 108) (dp) (V f )
	MaximumUnaliased Range			(meters)
	MaximumUnaliased Range	F2		(meters)
		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:	The SWR scale parameter top value is less than or equal to its bottom
TOP<=BOTTOM	value.
RANGE ERROR:	The RL scale parameter top value is greater than or equal to its bottom
TOP>=BOTTOM	value.
CAL	A complete open, short, and load calibration or a complete open,
INCOMPLETE	short, load isolation and thru calibration must be performed before
	calibration can be turned on.
DIST REQUIRES	Valid distance to fault plots require a non-zero frequency span.
F1 < F2
DIST REQUIRES	Distance-to-fault measurements do not provide usable data with CAL
CAL	OFF.
NO STORED	Attempting to recall a display from a location that has not been previ-
SWEEP AT THIS	ously written to. That is, the location does not contain stored sweep.
LOCATION
USE OPTIONS	Attempting to print a display with no printer selected. Select a printer,
MENU TO	then retry.
SELECT A
PRINTER
DISTANCE AND	DTF measurements only display RL or SWR versus distance.
CABLE
INSERTION LOSS
MODE ARE
INCOMPATIBLE
CANNOT ZERO	Attempting to perform a Power Monitor zero adjust function with no
NO DETECTOR	RF detector connected to the Site Master.
INSTALLED

3-25

Image 43

Anritsu S251B manual 3-25, Range Errors, MaximumUnaliased Range, Vf is the relative propagation velocity

Contents

Cable Analyzer Site Master Model S251B Antenna andUsers Guide NOTICE WARRANTYLIMITATION OF WARRANTY TRADEMARK ACKNOWLEDGMENTSPage Chapter 4 - Measurements Chapter 1 - General InformationChapter 2 - Getting Started Chapter 3 - Functions and Operations4-16 Making Power MeasurementsSWR Return Loss and Cable Loss Measurement DTF MeasurementChapter 5 - Software Tools Program iii/ivAppendix A - Reference Data Description Standard AccessoriesChapter General Information IntroductionOptions Optional AccessoriesChapter 1 General Information Chapter 1 General Information Performance SpecificationsValue Table 1-1. Performance Specifications 1 ofChapter 1 General Information Description Site MasterChapter 1 General Information Table 1-2. Performance Specifications 2 ofChapter 1 General Information Preventive MaintenanceAnnual Verification CalibrationChapter 1 General Information Chapter 1 General Information Table 1-2. Anritsu Service CentersChapter Getting Started Charging a New BatteryCharging the Battery in the Site Master Charging the Battery in the Optional ChargerChapter 2 Getting Started Battery Charge IndicatorBattery Indicator Chapter 2 Getting Started Discharging the NiMH BatteryBattery Life Important Battery InformationChapter 2 Getting Started Use only Anritsu approved battery packsSOFT KEYS Chapter Functions and OperationsFront Panel Overview IntroductionChapter 3 Functions and Operations Test Connector PanelBattery PowerENTER Keypad ControlsAUTO SCALEDISPLAY SETUPPRINT RECALLChapter 3 Functions and Operations SWEEPUp/Down Arrow KeySWEEP Soft KeysFREQ/DIST AMPLITUDEOFFSET MODE=POWER MONITOR SOFTKEYSChapter 3 Functions and Operations UNITSAMPLITUDESWEEP FREQ/DISTChapter 3 Functions and Operations MARKER TO PEAK MARKER TO VALLEY Chapter 3 Functions and OperationsMARKER MARKER TO PEAK MARKER TO VALLEYBACK SPACE 3-10Chapter 3 Functions and Operations ABC DEF GHI JKL MNO PQR STU VWXChapter 3 Functions and Operations 3-11FREQ/DIST Displays the frequency or distance menu depending on the measurement mode Chapter 3 Functions and Operations 3-12BACK — Returns to the Distance Menu Figure 3-10.Nominal Side Lobe Windowing Example 3-13Chapter 3 Functions and Operations Figure 3-9.Rectangular Windowing ExampleFigure 3-12.Minimum Side Lobe Windowing Example 3-14Chapter 3 Functions and Operations Figure 3-11.Low Side Lobe Windowing ExampleMenu 3-15AMPLITUDE AmplitudeChapter 3 Functions and Operations 3-16BACK — Return to the Sweep menu Chapter 3 Functions and Operations 3-17ALL OFF — Turns all markers off Sub-Menu 3-18Clock Chapter 3 Functions and OperationsDISPLAY 3-19Chapter 3 Functions and Operations RECALL3-20 Power Monitor MenuChapter 3 Functions and Operations OPTIONS Printing3-21 Printing a ScreenPRINT Printer Switch Settings3-22 PRINTERSymbol SymbolsSelf Test 3-23vice Center Error CodesSelf Test Errors 3-24Vf is the relative propagation velocity Range Errors3-25 MaximumUnaliased RangeChapter 3 Functions and Operations 3-26CANNOT ZERO Chapter 3 Functions and Operations 3-273-28 Using the Soft Carrying CaseChapter 3 Functions and Operations Measurement Functions Chapter MeasurementsIntroduction Calibration Procedure Power On ProcedureChapter 4 Measurements Performing a Calibration Selecting the Frequency RangeChapter 4 Measurements Chapter 4 Measurements Setting the Amplitude ScaleSaving the Setup Recalling a SetupRecalling a Display From Memory Saving a Display to MemoryChapter 4 Measurements Chapter 4 Measurements Figure 4-6.Insertion Loss Mode Calibration Results Loads at RF Out and RF In Chapter 4 MeasurementsNOTES: For best calibration results–compensationfor all measurement system uncertainties–ensurethat 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 Chapter 4 MeasurementsRequired Equipment Device-Under-TestSpecificationProcedure SWR Return Loss and Cable Loss MeasurementNOTES 4-10Performing a Calibration Chapter 4 MeasurementsFigure 4-9.Cable Measurement Test Setup 4-11SWR or Return Loss Measurement Set the Amplitude Scale and Limit LineStep 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 4-12Chapter 4 Measurements 4-13 Setting the MarkersChapter 4 Measurements Setting the Amplitude Scale Setting the Segment Limit LInes4-14 Cable Loss MeasurementChapter 4 Measurements 4-15Figure 4-12.Cable Loss Measurement Results Procedure 4-16DTF Measurement Device-Under-TestSpecificationStep 13. Press ENTER to start the calibration 4-17Performing a Calibration Chapter 4 MeasurementsChapter 4 Measurements Setting the Marker4-18 Setting the Amplitude ScaleChapter 4 Measurements 4-19Figure 4-13.DTF - SWR Measurement Results cable length Chapter 4 Measurements 4-20Setting the Amplitude Scale Setting the MarkersChapter 4 Measurements 4-21Figure 4-15.DTF - SWR Measurement Results cable quality Device-Under-TestSpecification 4-22Insertion Gain Amplifier Measurement Selecting the MeasurementOPTIONAL 4-23Chapter 4 Measurements TEST PORT CABLEFigure 4-20.Amplifier Gain Measurement Setup 4-24Amplifier Gain Measurement Setting the MarkersChapter 4 Measurements 4-25Activating the Bias Tee Setting the Amplitude ScaleChapter 4 Measurements 4-26Figure 4-22.Measurement Display of Amplifier Gain Measuring High Input Power Levels Making Power MeasurementsEntering Power Monitor Mode Zeroing the Power MonitorRequirements Communication Port SettingChanging COM Port Settings–Windows95/98/NT Chapter Software Tools ProgramChapter 5 Software Tools Program Plot Capture Software InstallationChapter 5 Software Tools Program Serial Interface Capture multiple traces to a databaseCapture single or multiple traces to PC screen COM port Program defaults to COM2Saving a Custom Cable List Custom Cable List Uploading and DownloadingChapter 5 Software Tools Program Fault Location SoftwareSmith Chart Software Program OperationChapter 5 Software Tools Program Pasting a Plot in Graphic or Spreadsheet For- matSaving Data to a Database “Drag-n-Drop”Printing Each cable/antenna tends to have a unique Distance-To-FaultDTF “Signature” because differing cable electrical lengths, cable types, dielectric thickness variations, and the posi- tions of components connectors, adapters, and lightning arresters will cause different re- flections at differing positions in the transmission line. Variations in the “signature” between maintenance intervals offer a good indication of damage or damage causing condi- tionsChapter 5 Software Tools Program Relative Propagation Velocity Vf Coaxial Cable Technical DataAppendix A Reference Data Cable TypeNominal Attenuation Appendix A Reference DataCable Type Relative Propagation Velocity Vf