Anritsu S251B manual Setting the Amplitude Scale, Saving the Setup, Recalling a Setup

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Chapter 4 Measurements

Step 15. Remove the Short, connect the calibrated Load and press the ENTER key. The message “MEASURING LOAD ” will appear.

NOTE:

For OSLT calibration, the messages “MEASURING LOAD” and “CONNECT LOADS TO RF OUT AND RF IN PORTS” will appear.

Step 16. Connect the second calibrated load to the RF In test port and press the ENTER key. The messages “MEASURING ISOLATION” and “CONNECT RF OUT PORT TO RF IN PORT” will appear.

Step 17. Remove both loads, connect an adapter and/or a cable from the RF Out test port to the RF In test port and press ENTER.

Step 18. Verify that the calibration has been properly performed by checking that the message “CAL ON” is displayed in the upper left corner of the display.

Setting the Amplitude Scale

The following procedure sets the amplitude scale.

Step 1. Press the AMPLITUDE or LIMIT key to call up the Scale menu.

Step 2. In SWR mode, press the TOP soft key and enter 1, ., 1 using the key pad or the Up/Down arrow key, and press ENTER. (In Return Loss mode, enter 0; in Inser- tion Gain/Loss mode, enter 100.)

Step 3. In SWR mode, press the BOTTOM soft key and enter 1 using the key pad or the Up/Down arrow key, and press ENTER. (In Return Loss mode, enter 54; in In- sertion Gain/Loss mode, enter –120.)

NOTE:

Figure 4-3and 4-4show the typical responses of a valid OSL calibration with a load attached to the test port with 517 data points.

Figures 4-5,4-6,4-7and 4-8show typical responses of a valid OSLT calibra- tion with loads attached to the test port and with the RF Out test port attached to the RF In test port.

To change the number of data points, press the SWEEP key, followed by the RESOLUTION soft key. Select 130, 259, or 517 data points.

Saving the Setup

The following procedure can be used to save a setup and calibration in memory.

Step 1. Press the SAVE SETUP key.

Step 2. Use the key pad or the Up/Down arrow key to select a memory location (1 - 10), then press ENTER.

Recalling a Setup

The following procedure recalls a setup from memory.

Step 1. Press the RECALL SETUP key.

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Contents Site Master Model S251B Antenna Cable Analyzer Warranty Page Table of Contents Cable Loss Measurement Iii/iv Description Standard AccessoriesIntroduction Optional Accessories OptionsPerformance Specifications Description Site Master Performance Specifications 2 Preventive Maintenance Calibration Annual VerificationAnritsu Service Centers Charging the Battery in the Optional Charger Charging a New BatteryCharging the Battery in the Site Master Battery Charge Indicator Getting StartedImportant Battery Information Discharging the NiMH BatteryBattery Life Getting Started Chapter Functions and Operations Front Panel OverviewTest Connector Panel RF OutKeypad Controls ClearPrint Sweep Soft Keys FREQ/DIST Amplitude SweepMODE=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 Printing a ScreenPrinter Switch Settings PrinterSymbols Self TestError Codes Self Test ErrorsRange Errors ERRORD2Input Signal 16. Maximum Distance and Resolution vs Frequency Span Using the Soft Carrying Case 17. Using the Site Master Soft Carrying CaseChapter Measurements Measurement FunctionsPower On Procedure Calibration ProcedureSelecting the Frequency Range Performing a CalibrationRecalling a Setup Setting the Amplitude ScaleSaving the Setup Saving a Display to Memory Recalling a Display From MemoryMeasurements Measurements Measurements Selecting the Measurement Mode Device-Under-Test SpecificationProcedure SWR Return Loss and Cable Loss MeasurementPerforming a Calibration SWR or Return Loss Measurement Set the Amplitude Scale and Limit LineMeasurements Setting the Markers 10. Cable SWR Measurement ResultsSetting the Segment Limit LInes Cable Loss Measurement12. Cable Loss Measurement Results DTF Measurement LossPerforming a Calibration Setting the Marker DTF Measurement Determining the Length of the Cable13. DTF SWR Measurement Results cable length DTF Measurement Determining the quality of the cable 15. DTF SWR Measurement Results cable quality Insertion Gain Amplifier Measurement Selecting the Measurement17. Two-Port Measurement Calibration Setup Amplifier Gain Measurement Test Port Cable Optional RF in Test Port RF OUT Test PortActivating the Bias Tee 21. Measurement Display Showing Bypass ConditionPress the Marker key to display the marker value Making Power Measurements Requirements Communication Port SettingChanging COM Port Settings-Windows 95/98/NT Software Tools Program Software Installation Plot CaptureCapture multiple traces to a database Capture single or multiple traces to PC screenCustom Cable List Uploading and Downloading Saving a Custom Cable ListProgram Operation Fault Location SoftwareSmith Chart Software Drag-n-Drop Pasting a Plot in Graphic or Spreadsheet For- matSaving Data to a Database Printing Coaxial Cable Technical Data Appendix a Reference 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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