Anritsu Getting Started with the S251C Stereo System: Frequency Selection and Calibration

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Chapter 3 Getting Started

Select the Frequency or Distance

Regardless of the calibration method used, the frequency range for the desired measure- ments must be set before calibrating the Site Master. The following procedure selects the frequency range for the calibration.

Step 1. Press the FREQ/DIST key.

Step 2. Press the F1 soft key.

Step 3. Enter the desired frequency using the key pad or the Up/Down arrow key. Step 4. Press ENTER to set F1 to the desired frequency.

Step 5. Press the F2 soft key.

Step 6. Enter the desired frequency using the keypad or the Up/Down arrow key. Step 7. Press ENTER to set F2 to the desired frequency.

Check that the start and stop frequencies displayed match the desired measure- ment range..

Calibration

For accurate results, the Site Master must be calibrated at the ambient temperature before making any measurements. The Site Master must be re-calibrated whenever the setup fre- quency changes, the temperature exceeds the initial calibration temperature or when the test port extension cable is removed or replaced.

The Site Master may be calibrated manually with Open, Short, Load (OSL) calibration components. Two port calibration requires two Load components.

If a Test Port Extension Cable is to be used, the Site Master must be calibrated with the Test Port Extension Cable in place. The Test Port Extension Cable is a phase stable cable and is used as an extension cable on the test port to ensure accurate and repeatable measure- ments. This phase stable cable can be moved and bent while making a measurement with- out causing errors in the measurement.

NOTE: The test port extension cable should have the appropriate connectors for the measurement. Use of additional connector adapters after the test port extension cable can contribute to measurement errors not compensated for during calibration.

The following procedure explains the calibration methods. Refer to Figure 3-2for a calibra- tion setup diagram.

3-2

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Contents Site Master Model S251C Antenna Cable Analyzer Page Warranty Page Table of Contents Cable & Antenna Analysis Iii/iv Introduction Standard AccessoriesDescription Options Optional AccessoriesPerformance Specifications Description Site Master Performance Specifications 2 ESD Precautions Preventive MaintenanceAnnual Verification Anritsu Service Centers Chapter Functions and Operations Test Connector PanelActive Function Block Soft Keys Front Panel OverviewMode Function Hard KeysClear Keypad Hard KeysAuto MODE=FREQ FREQ/DIST Softkeys Soft KeysMODE=DTF FREQ/DIST Softkeys Functions and Operations Amplitude MODE=POWER Monitor Softkeys Power Monitor Menu OptionMODE=RF Source Softkeys RF Source MenuLimit Segment 1 Segment SYS Self Test SymbolsSelf Test Errors Error CodesERRORD2 Range ErrorsCharging a New Battery Battery InformationCharging the Battery in the Site Master Charging the Battery in the Optional ChargerBattery Life Battery Charge IndicatorImportant Battery Information Chapter Getting Started Power On ProcedureCalibration Select the Frequency or DistanceCalibration Calibration Procedure Single PortRF in Test Port RF OUT Test Port Calibration Procedure Dual PortSave and Recall a Setup Setting the ScaleSave and Recall a Display Recalling a Display Changing the Units Set the Distance and Cable TypeChanging the Display Language Printing a Screen PrintingPrinter Printer Switch SettingsUsing the Site Master Soft Carrying Case Using the Soft Carrying CaseLine Sweep Fundamentals One Port MeasurementsMeasurements Information Required for a Line SweepSystem Return Loss Measurement Typical Line Sweep Test Procedures2is an example of a typical system return loss trace Insertion Loss Measurement Procedure Cable Loss ModeType Attenuation dB/ft Length ft = Loss dB Procedure Return Loss Mode Procedure DTF-Return Loss Mode Distance-To-Fault DTF Transmission Line TestProcedure DTF-SWR Mode Antenna Subsystem Return Loss Test Vswr Introduction Two Port MeasurementsTMA-S TMA MeasurementsTMA Gain Measurement After Calibration TMA-DD 12. TMA-DD Gain Measurement TMA-D 14. TMA-D Gain Measurement 15. System Isolation Antenna to Antenna IsolationAntenna-to-Antenna Isolation Measurement Quency settings for common systems21/4-22 System Requirements FeaturesCommunication Port Setting InstallationInterface Cable Installation Using Software ToolsDownloading Traces from the Site Master Plot Properties Plot CaptureSaving Traces Trace Overlay or Plot OverlaySaving a Plot to a Spreadsheet Custom Cable ListPrinting Formats Creating a DatabaseAppendix a Reference Data Coaxial Cable Technical DataAppendix a Reference Data A-4 Examples Appendix B WindowingAppendix B Windowing B-4