Diagnostics Theory

GSM and DCS Diagnostic Tests

GSM and DCS Diagnostic Tests

Each of these tests performs a functional check on the instrument by generating a test signal and looping the signal back to the measurement hardware.

The tests with titles beginning with E are for use with an HP/Agilent 8922E. Tests with titles beginning with G are for use with an HP/Agilent 8922G. Tests without an E or G prefix are used with the HP/Agilent 8922F/H/M/S.

The HP/Agilent 8922E/G DCS tests, EDCSDIAG and GDCSDIAG check instruments that have an HP/Agilent 83220A installed. The HP/Agilent 8922E/G GSM tests EGSMDIAG and GGSMDIAG are used for instruments without an HP/Agilent 83220A installed. The HP/Agilent 8922F/H/M/S diagnostic test are also in two forms. GSMDIAG checks the HP/Agilent 8922F/H/M/S. The diagnostic test DCSDIAG tests either the HP/ Agilent 83220A or the HP/Agilent 83220E, which ever instrument is installed.

Using internal routing and generation, a known bit pattern is modulated and sent to the AUX RF OUT port of either the HP/Agilent 8922E/F/G/H or the HP/Agilent 83220A. With an external connection made to the RF IN/OUT port the instrument demodulates the signal and performs a BER measurement and DSP measurement. This test provides a functional test of the assemblies that can not be checked directly as with the other diagnostic tests. The assemblies checked include the A31 CODEC, the A32 GSM CONTROLLER, and the A34 GSM RTI. The HP/Agilent 83220A can be further verified for failure by disconnecting it and running the appropriate GSM test on the HP/Agilent 8922E/F/G/H/M/S. This will show whether the instrument still fails without the HP/ Agilent 83220A. The HP/Agilent 83220E diagnostic tests are less extensive.

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Agilent Technologies 8922 manual GSM and DCS Diagnostic Tests
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8922 specifications

Agilent Technologies 8922 is a versatile and robust mobile communication test set, designed to fulfill the demanding requirements of wireless device manufacturers and service providers. Primarily focused on mobile radio communications, the 8922 provides a comprehensive solution for testing a wide array of signaling standards and technologies, making it essential in the rapidly evolving telecommunications landscape.

One of the standout features of the Agilent 8922 is its support for multiple wireless standards, including GSM, GPRS, EDGE, WCDMA, and HSPA. This makes the device an ideal choice for testing mobile devices that operate on different generations of cellular networks. Additionally, the 8922 is equipped with advanced measurement capabilities, allowing users to perform key performance indicators assessments, such as power, modulation quality, and spectral emission analysis, ensuring devices meet stringent regulatory and performance standards.

The 8922 is designed with an intuitive user interface that simplifies the setup and execution of tests. It features a large color display, making it easier for users to view test results and navigate through various functions. The built-in automation capabilities enable seamless integration into production environments, where efficiency and repeatability are crucial for high-volume testing.

Technologically, the Agilent 8922 incorporates advanced signal processing algorithms, which enhance its measurement accuracy and speed. The device's architecture allows for real-time analysis of signals, enabling users to identify issues quickly and efficiently. This is particularly important in the realm of mobile communications, where time-to-market is critical for competitive advantage.

Another significant characteristic of the 8922 is its flexible configuration options. Users can customize the test set with different hardware and software modules to suit specific testing needs. This scalability ensures that the 8922 remains relevant as wireless technologies evolve and new standards emerge.

In conclusion, the Agilent Technologies 8922 is an indispensable tool for professionals engaged in the testing of mobile communications devices. Its broad support for multiple standards, advanced measurement capabilities, user-friendly design, and flexibility make it a top choice in the telecommunications testing community. As the mobile communication industry continues to advance, the 8922 stands out as a leading solution for ensuring that devices meet quality and performance expectations.
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