Coverage Mapping with the Field Master Pro™ MS2090A Spectrum Analyzer
■When rolling out any new wireless communications network, an essential part of the process is validating that users have good signal coverage across the entire geographic service area. For commercial networks, such as cellular operators, dropped calls due to poor signal coverage results in customer frustration and churn. For first responder networks, including TETRA and P25 systems, poor coverage can result in potential danger to life if paramedics or law enforcement officers lose communications with their control centers.
■The expected coverage and performance of a new network is typically modelled at the design stage, with base stations positioned strategically to ensure total geographic coverage. Once installed, it is necessary to validate that real world coverage matches the modelling expectations. Geographic features such as hills, forests, and tall buildings can result in unexpected "no coverage" zones which need to be identified and additional base stations of repeaters need to be added.
■The installation of a communications base station requires many layers of test. During the first build out, the RF cables and antennas will require line sweeping which tests the transmitter after installation this will verify that transmit power has been set within tolerance and that spurious and harmonic emissions meet local or national regulations. Modulation quality metrics such as error vector magnitude (EVM) and channel bandwidth are regularly part of the acceptance test. Finally, when the base station has been brought on-line, the geographic coverage needs to be measured against the predicted models.
■Each of these test elements require specific test instruments such as, cable and antenna analyzers, spectrum analyzers, and drive test solutions. Today, integrated instruments such as the Anritsu's Field Master Pro MS2090A can perform many of these measurements in a single instrument.
■The Field Master Pro MS2090A spectrum analyzer has an optional built-in coverage mapping feature that enables a common instrument to be used for transmitter signal quality testing and coverage mapping.
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2021-03 |
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Rev. A |
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11410-02851 |
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6.1 MB |
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