Anritsu S251B manual Performing a Calibration

Page 63

Chapter 4 Measurements

Step 7. Use the Up/Down arrow key to scroll to F1, then press ENTER to select the start frequency F1.

Step 8. Enter 6, 2, 5 using the keypad or the Up/Down arrow key. Press ENTER to set F1 to 625 MHz.

Step 9. Use the Up/Down arrow key to scroll to F2, then press ENTER to select the start frequency F2.

Step 10. Enter 2, 5, 0, 0 using the keypad or the Up/Down arrow key. Press ENTER to set F2 to 2500 MHz.

Step 11. Scroll to PROP VEL and press ENTER to select Propagation Velocity parameters.

NOTE:

Propagation velocity and cable loss can be accessed by selecting CABLE FUNCTION from the DTF AID parameter table.

Step 12. Enter ., 8, 6 and press ENTER to set the Propagation Velocity to 0.86.

Step 13. Press ENTER to start the calibration.

NOTE:

If the calibration is valid, scroll to CALIBRATION VALID–CONTINUEand press ENTER. If calibration is necessary, proceed to the calibration instructions.

Performing a Calibration

This procedure is used to perform a calibration.

Step 14. At the Perform Calibration menu, follow the instructions on the display to con- nect the respective calibration components to the Site Master test port. (Refer to the calibration procedure on page 4-3.)

NOTES:

For best calibration results — compensation for all measurement system uncer- tainties — ensure that the Open/Short/Load is at the end of the test port or op- tional extension cable; that is, at the same point that you will connect the antenna or device to be tested.

For best results, use a phase stable Test Port Extension Cable (see Optional Accessories). If you use a typical laboratory cable to extend the Anritsu test port to the device-under-test, cable bending subsequent to the Open/Short/Load cal- ibration will cause uncompensated phase reflections inside the cable. Thus, ca- bles which are not phase stable may cause measurement errors that are more pronounced as the test frequency increases.

For optimum calibration, Anritsu recommends using precision calibration com- ponents.

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Contents Site Master Model S251B Antenna Cable Analyzer Warranty Page Table of Contents Cable Loss Measurement Iii/iv Standard Accessories IntroductionDescription Options Optional AccessoriesPerformance Specifications Description Site Master Performance Specifications 2 Preventive Maintenance Annual Verification CalibrationAnritsu Service Centers Charging a New Battery Charging the Battery in the Site MasterCharging the Battery in the Optional Charger Getting Started Battery Charge IndicatorDischarging the NiMH Battery Battery LifeImportant Battery Information Getting Started Front Panel Overview Chapter Functions and OperationsRF Out Test Connector PanelClear Keypad ControlsPrint Sweep FREQ/DIST Amplitude Sweep Soft KeysMODE=POWER Monitor Softkeys FREQ/DIST Amplitudesweep ON/OFF Edit SYS Functions and Operations Back Returns to the Distance Menu Rectangular Windowing Example 11. Low Side Lobe Windowing Example Amplitude RUN/HOLD button Functions and Operations Clock Tions are Power Monitor Menu Printing a Screen PrintingPrinter Printer Switch SettingsSelf Test SymbolsSelf Test Errors Error CodesERRORD2 Range ErrorsInput Signal 16. Maximum Distance and Resolution vs Frequency Span 17. Using the Site Master Soft Carrying Case Using the Soft Carrying CaseMeasurement Functions Chapter MeasurementsCalibration Procedure Power On ProcedurePerforming a Calibration Selecting the Frequency RangeSetting the Amplitude Scale Saving the SetupRecalling a Setup Recalling a Display From Memory Saving a Display to MemoryMeasurements Measurements Measurements SWR Return Loss and Cable Loss Measurement Device-Under-Test SpecificationProcedure Selecting the Measurement ModePerforming a Calibration Set the Amplitude Scale and Limit Line SWR or Return Loss MeasurementMeasurements 10. Cable SWR Measurement Results Setting the MarkersCable Loss Measurement Setting the Segment Limit LInes12. Cable Loss Measurement Results Loss DTF MeasurementPerforming a Calibration DTF Measurement Determining the Length of the Cable Setting the Marker13. DTF SWR Measurement Results cable length DTF Measurement Determining the quality of the cable 15. DTF SWR Measurement Results cable quality Selecting the Measurement Insertion Gain Amplifier Measurement17. Two-Port Measurement Calibration Setup Test Port Cable Optional RF in Test Port RF OUT Test Port Amplifier Gain Measurement21. Measurement Display Showing Bypass Condition Activating the Bias TeePress the Marker key to display the marker value Making Power Measurements Communication Port Setting Changing COM Port Settings-Windows 95/98/NTRequirements Software Tools Program Plot Capture Software InstallationCapture single or multiple traces to PC screen Capture multiple traces to a databaseSaving a Custom Cable List Custom Cable List Uploading and DownloadingFault Location Software Smith Chart SoftwareProgram Operation Pasting a Plot in Graphic or Spreadsheet For- mat Saving Data to a DatabaseDrag-n-Drop Printing Appendix a Reference Data Coaxial Cable Technical DataAppendix a Reference Data

S251B specifications

The Anritsu S251B is a state-of-the-art handheld spectrum analyzer designed for wireless communication applications. This compact yet powerful device is engineered to provide engineers and technicians with versatile and reliable measurements in both field and laboratory environments. Its lightweight design, weighing under 1.5 kilograms, allows for easy portability, making it an ideal solution for on-site testing.

One of the standout features of the S251B is its frequency range, which spans from 100 kHz to 6 GHz. This broad coverage is essential for monitoring various wireless technologies, including LTE, Wi-Fi, Bluetooth, and many others. The exceptional resolution bandwidth options from 1 kHz to 1 MHz help in detecting weak signals and interference, ensuring that users can analyze signals with precision.

The S251B utilizes advanced digital signal processing (DSP) technology, which significantly enhances measurement accuracy and speed. This allows for real-time spectrum analysis, ensuring that users can quickly identify and troubleshoot issues. The device supports a range of measurement applications, including spectrum analysis, interference analysis, and channel power measurements, making it a versatile tool for many scenarios.

For ease of use, the analyzer features a bright, color display that provides clear visibility in various lighting conditions. The intuitive graphical user interface enables quick navigation through settings and configuration options. Additionally, the S251B is equipped with a long-lasting battery that provides hours of continuous operation, further enhancing its suitability for field applications.

Connectivity is another key area where the Anritsu S251B excels. It offers USB and Ethernet ports for easy data transfer and remote control capabilities. This feature is particularly useful for engineers who need to integrate the analyzer into automated testing setups or require remote access for more profound analysis.

Moreover, the S251B is designed with ruggedness in mind. It is built to withstand the challenges of field use, including dropping and exposure to various environmental conditions, ensuring reliable performance even in demanding situations.

In conclusion, the Anritsu S251B handheld spectrum analyzer combines portability, advanced measurement techniques, and durability. With its wide frequency range, user-friendly interface, and connectivity options, it is a vital tool for professionals involved in the testing and deployment of wireless communication systems. Its robust capabilities make it an impressive asset for troubleshooting, maintenance, and installation tasks in the field.
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