Anritsu S251C manual Antenna-to-Antenna Isolation Measurement, Quency settings for common systems

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Chapter 4 Measurements

Antenna-to-Antenna Isolation Measurement

Antenna-to-Antenna isolation measurement is accomplished in Insertion Loss Mode. Inser- tion Loss Mode (+ 6 dBm) is used to drive the signal level large enough to be detected by the second antenna system. The Insertion Gain Mode (–30 dBm level) does not output enough power to provide an accurate measurement of Antenna-to-Antenna isolation .

Required Equipment

Site Master Model S251C

Test Port Extension Cable, Anritsu 15NNF50-1.5C (2 each)

Adapter, Anritsu 36NN50A

Procedure
Step 1.	Press the MODE key.
Step 2.	Select INSERTION LOSS (+6 dBm) using the Up/Down arrow key and press
	ENTER.
Step 3.	Set the frequency range for the antenna system. The table below indicates fre-
	quency settings for common systems.

Operation			System	F1 - Start Frequency	F2 - Stop Frequency
Mode			System	(MHz)	(MHz)
Mode				(MHz)	(MHz)

			CELLULAR	806	960
Insertion Loss
Insertion Loss			PCS	1850	1990
(+6 dBm)			PCS	1850	1990
(+6 dBm)

			GSM	1800	1900

Step 4. Perform a full two port calibration of the Site Master (see page 3-4). The cali- bration will provide a 0 dB reference level as shown in Figure 4-16.

Figure 4-16. Calibration Reference Level

4-20

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Contents Site Master Model S251C Antenna Cable Analyzer Page Warranty Page Table of Contents Cable & Antenna Analysis Iii/iv Description Standard AccessoriesIntroduction 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 Display Setting the ScaleSave and Recall a Setup Recalling a Display Changing the Display Language Set the Distance and Cable TypeChanging the Units 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 InstallationDownloading Traces from the Site Master Using Software ToolsInterface Cable Installation 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