If Counter Test, AGC Reference DAC Test | Agilent Technologies 8922

Diagnostics Theory

RF_DIAGS

Down Converters (With Spectrum Analyzer) Test

The RF generator is fed to the receiver IF through the A23 Input and A11 Receiver Mixer assemblies to the second mixer in the receiver. The signal is measured by the spectrum analyzer at three frequencies at the SA_114.3M output.

IF Counter Test

The signal is measured again after the third mixer and FM discriminator at the IF_CNT output by the counter.

AGC Open Loop (At AM Output) Test

The AGC open loop operation is checked at both high and low levels at three DAC level settings. The signal is measured after the pulse detector at the DEMOD_AUD output. This DC level represents the IF level.

AGC Closed Loop (At AM Output) Test

The AGC loop is closed and the level at the DEMOD_AUD output is measured again with both AM and Pulse selected.

AGC Reference DAC Test

The AGC loop is opened and the closed loop level DAC is measured by the voltmeter at the AUX7_VM output.

AGC Open-Loop Drive DAC Test

The AGC loop is opened and the open loop level DAC is measured by the voltmeter at the AUX7_VM output.

Temperature Test

The temperature sensor is measured by the voltmeter at the AUX7_VM output.

AM Demodulator Test

The AUDIO OUT source is routed to the MODULATION IN AM/SPEECH connector externally to produce an AM signal and the demodulated AM is measured at the DEMOD_AUD output by the voltmeter through the A3 Audio Analyzer 1 assembly.

FM Demodulator Test

The FM demodulator is measured statically by changing the RF generator frequency by a small amount and measuring the DC voltage change at the output of the FM demodulator at the DEMOD_AUD output by the voltmeter through the A3 Audio Analyzer 1 assembly.

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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.

Agilent Technologies 8922 manual Down Converters With Spectrum Analyzer Test, If Counter Test

Models: 8922