Anritsu S251C manual Calibration Procedure Dual Port, RF in Test Port RF OUT Test Port

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Chapter 3 Getting Started

Calibration Procedure - Dual Port

Check that the “CAL OFF” message is displayed in the upper left corner of the display. This indicates that the Site Master has not been calibrated. The following procedure details how to perform the calibration. Two port calibration requires two Load components.

Step 1. Select the appropriate frequency range, as described in the procedure on page 3-2.

Step 2. Press the START CAL key. The message CONNECT OPEN TO RF Out PORT will appear in the display.

Step 3. Connect the calibrated Open and press the ENTER key. The messages Mea-

suring OPEN and then CONNECT SHORT TO RF Out PORT will appear.

Step 4. Remove the Open, connect the calibrated Short and press the ENTER key. The messages Measuring SHORT and then CONNECT LOAD TO RF Out PORT will appear.

Step 5. Remove the Short, connect the calibrated Load and press the ENTER key. The messages Measuring LOAD and then CONNECT LOADS TO RF Out AND RF In PORTS will appear.

Step 6. Connect the calibrated Loads to the RF Out and RF In ports and press the ENTER key. The messages Measuring ISOLATION and then CONNECT RF Out PORT TO RF In PORT will appear.

Step 7. Remove the Loads, connect the RF Out PORT extension cable to the RF In PORT extension cable, using the proper adapter for the cable connector type, and press the ENTER key. The message Measuring THRU will appear.

Step 8. Verify that the calibration has been properly performed by checking that the CAL ON message is now displayed in the upper left corner of the display.

 

LOAD

 

OPEN

TEST PORT CABLE

SHORT

(OPTIONAL)

LOAD

 

 

TEST PORT CABLE

 

(OPTIONAL)

RF IN TEST PORT

 

 

RF OUT TEST PORT

 

Site Master S251C

1

2

START AUTO

CAL SCALE

3 4

SAVE RECALL

SETUP SETUP

5 6

LIMIT MARKER

7 8

ESCAPE

CLEAR

ENTER

SAVE

RECALL

RUN

DISPLAY

DISPLAY

HOLD

9

0

+/-

ON PRINT

OFF.

MODE

FREQ/DIST

AMPLITUDE

SWEEP

Figure 3-3. Two-Port Measurement Calibration Setup

SYS

3-4

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Contents Site Master Model S251C Antenna Cable Analyzer Page Warranty Page Table of Contents Cable & Antenna Analysis Iii/iv Standard Accessories IntroductionDescription 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 the Battery in the Optional Charger Battery InformationCharging a New Battery Charging the Battery in the Site MasterBattery 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 PortSetting the Scale Save and Recall a SetupSave and Recall a Display Recalling a Display Set the Distance and Cable Type Changing the UnitsChanging 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 InstallationUsing Software Tools Interface Cable InstallationDownloading 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