Anritsu S251B manual Power On Procedure, Calibration Procedure

Page 48

Chapter 4 Measurements

Power On Procedure

The Site Master is designed specifically for field environments and applications requiring mobility. As such, it is a lightweight, handheld, battery operated unit which can be easily carried to any location, and is capable of up to 2.5 hours of continuous operation from a fully charged battery. Built-in energy conservation features allow battery life to be extended over an eight-hour workday. The Site Master can also be powered by a 12.5 Vdc external source. The external source can be either the Anritsu AC-DC Adapter (P/N 40-115) or 12.5 Vdc Automotive Cigarette Lighter Adapter (P/N 806-62) provided.

Step 1. Press the ON/OFF key.

The Site Master takes about five seconds to perform a series of self-diagnostic and adjustment routines. At completion, the screen displays the Anritsu logo, the model number, and the version of firmware installed.

Step 2. Press ENTER to continue, or wait for one minute.

The Site Master is now ready for operation.

Calibration Procedure

The following procedure provides the steps necessary to perform Open-Short-Load (OSL) and Open-Short-Load-Thru (OSLT) calibrations. Calibration is done with the maximum 517 data points and is valid for 130 and 259 data point settings (default is 259). Refer to Figure 4-1for setup.

LOAD

TEST PORT CABLE (OPTIONAL)

OPEN

SHORT

LOAD

CALIBRATION

TEST PORT CABLE (OPTIONAL)

RF IN TEST PORT

RF OUT TEST PORT

Site Master S251B

 

 

 

 

 

ESCAPE

 

 

 

1

2

CLEAR

 

 

 

START

AUTO

 

 

 

 

CAL

SCALE

 

 

 

 

3

4

 

 

 

 

SAVE

RECALL

 

 

 

 

SETUP

SETUP

 

 

 

 

5

6

 

 

 

 

LIMIT

MARKER

ENTER

 

 

 

7

8

 

 

 

 

 

 

 

SAVE

RECALL

RUN

 

 

 

DISPLAY

DISPLAY

HOLD

 

 

 

9

0

+/-

625.0

 

 

2500.0

 

 

1384.45 MHz

 

 

 

 

2096.66 MHz

 

ON

PRINT

SYS

 

 

 

OFF

.

 

 

 

 

 

MODE

FREQ/DIST

AMPLITUDE

SWEEP

 

 

Figure 4-1. One-port Measurement Calibration Setup

Step 1. Press the MODE key.

Step 2. Use the Up/Down arrow key to scroll to FREQ - SWR or RETURN LOSS for OSL calibration; or scroll to INSERTION LOSS (+6 dBm) or INSERTION GAIN (–30 dBm) measurement mode for OSLT calibration..

4-2

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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 Optional Accessories OptionsPerformance Specifications Description Site Master Performance Specifications 2 Preventive Maintenance Calibration Annual VerificationAnritsu Service Centers Charging a New Battery Charging the Battery in the Site MasterCharging the Battery in the Optional Charger Battery Charge Indicator Getting StartedDischarging the NiMH Battery Battery LifeImportant Battery Information 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 CalibrationSetting the Amplitude Scale Saving the SetupRecalling a Setup Saving a Display to Memory Recalling a Display From MemoryMeasurements Measurements Measurements Device-Under-Test Specification ProcedureSelecting the Measurement Mode 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 Communication Port Setting Changing COM Port Settings-Windows 95/98/NTRequirements 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 ListFault Location Software Smith Chart SoftwareProgram Operation Pasting a Plot in Graphic or Spreadsheet For- mat Saving Data to a DatabaseDrag-n-Drop 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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