How do you verify wireless communication devices?
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Wireless communication devices are essential for many applications, such as mobile phones, tablets, laptops, radios, and IoT devices. However, to ensure their functionality, reliability, and security, you need to verify them before deploying them in the field. Verification is the process of testing and validating the performance, compatibility, and compliance of wireless devices according to certain standards and specifications. In this article, you will learn how to verify wireless communication devices using some common methods and tools.
The first step in verifying wireless communication devices is to prepare the device for testing. This may involve charging the battery, installing the SIM card, updating the firmware, configuring the settings, and connecting the device to the network. You also need to prepare the test environment, such as choosing a suitable location, eliminating interference sources, and setting up the test equipment. The test equipment may include a signal generator, a spectrum analyzer, a network analyzer, a power meter, and an antenna.
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Khaled Daher
Installation General Manager @ CAF | Smart Mobility Expert
In my experience, Preparation for the work is crucial step, by ensuring that the device (spectrum analyzer and power meter,etc) are calibrated, software is updated, fully charged, ready for testing, we have a power source for the testing, these basics steps however make big difference.
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The next step is to verify the signal quality of the wireless communication device. Signal quality refers to the strength, clarity, and accuracy of the transmitted and received signals. You can measure the signal quality using various parameters, such as signal-to-noise ratio (SNR), bit error rate (BER), modulation error ratio (MER), and carrier-to-interference ratio (CIR). You can use a signal generator to create a known signal and a spectrum analyzer to measure the frequency, amplitude, and distortion of the signal. You can also use a network analyzer to measure the reflection, transmission, and impedance of the signal.
The third step is to verify the functionality of the wireless communication device. Functionality refers to the ability of the device to perform its intended tasks and features. You can test the functionality using various scenarios, such as making and receiving calls, sending and receiving messages, browsing the internet, streaming media, using apps, and connecting to other devices. You can use a software tool or a manual procedure to execute the test cases and record the results. You can also use a power meter to measure the power consumption and battery life of the device.
The fourth step is to verify the compatibility of the wireless communication device. Compatibility refers to the ability of the device to work with other devices and systems that use the same or different wireless technologies. You can test the compatibility using various standards and protocols, such as GSM, CDMA, LTE, Wi-Fi, Bluetooth, NFC, and RFID. You can use a test device or a simulator to emulate the other device or system and communicate with the device under test. You can also use an antenna to measure the radiation pattern and polarization of the device.
The final step is to verify the compliance of the wireless communication device. Compliance refers to the adherence of the device to the legal and regulatory requirements of the country or region where it operates. You can check the compliance using various criteria, such as frequency allocation, power output, modulation scheme, encryption method, and certification marks. You can use a document or a database to verify the compliance information and rules. You can also use a test lab or a certification body to perform the compliance testing and certification.
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Khaled Daher
Installation General Manager @ CAF | Smart Mobility Expert
During testing the system and Antennas with spectrum analyzer and power meter as an example, we should have reference values sheet, to compare the real results which have been taken from site with the ideal values (theorical values). We should fill the test/coverage report to be presented to the client as part of compliance verification.
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