RF POWER/ALC CALIBRATION

ADJUSTMENTS

If calibration fails:

￿ Verify the GPIB cable is connected to the Dedicated GPIB (bot- tom) connector on the 373XXA rear panel.

 

￿ Verify that the frequency counter is functioning correctly, the ca-

 

ble is in good condition, and all connections are secure.

 

￿ Note which calibration step failed from the screen messages.

 

￿ Repeat the calibration. If it still fails, then go to Chapter 5, Trou-

 

bleshooting.

6-5RF POWER/ALC

This procedure uses the 373XXA internal diagnostics and calibration

CALIBRATION

menus, in conjunction with a suitable power meter, to adjust the out-

 

put power level of the signal source throughout the range of the

 

373XXA model being calibrated. Perform this calibration procedure if:

 

￿ The Source Power/ALC test in Chapter 3, Operating Test, fails.

 

￿ Other testing or troubleshooting reveals a possible problem with

 

RF Power accuracy or the ALC loop.

 

￿ Any of the following assemblies are replaced:

 

￿ A21A1 Source YIG/Bias

 

￿ A21A2 Source Controller

 

￿ Down Converter

 

￿ YIG Oscillator

 

￿ Switched Filter

 

￿ Transfer Switch

 

￿ SDM (37369A)

 

￿ Coupler (37325A and above)

 

￿ Bridge (37317A and below)

 

￿ Port 1 Source Step Attenuator

 

￿ Buffer Amplifier

 

￿ BBRAM chip on the A9 Processor PCB is replaced and the

 

Source Calibration Data was not previously saved on disk (thus

 

data could not be recalled from disk).

6-8

373XXA MM

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Anritsu 373XXA manual RF POWER/ALC Calibration, 5RF POWER/ALC

373XXA specifications

The Anritsu 373XXA series is a notable line of microwave and RF signal analyzers designed for comprehensive analysis and testing of various wireless communication technologies. These analyzers are specifically crafted to meet the demands of modern communication systems, making them ideal for engineers and technicians working in wireless research, development, and manufacturing.

One of the main features of the Anritsu 373XXA series is its wide frequency range, which typically spans from as low as 5 kHz to several GHz, accommodating a vast array of signal types and applications. This extensive frequency coverage allows users to test and validate all manner of systems, from LTE and 5G networks to satellite communications, yielding accurate and reliable measurement results.

The device employs advanced measurement technologies that provide in-depth analysis capabilities. Among these technologies is the ability to perform both time and frequency domain measurements, allowing users to visualize and diagnose signal integrity issues effectively. In addition, the 373XXA series incorporates vector signal analysis, which is crucial in evaluating complex modulated signals, commonly found in today’s sophisticated wireless communication protocols.

Another distinguishing characteristic of the Anritsu 373XXA is its user-friendly interface. It features a large, high-resolution display that enables easy navigation through the analyzer's functions and measurements. The intuitive design is further enhanced by customizable settings and measurement configurations that streamline the workflow, making it accessible for both novice and experienced users.

The 373XXA series also supports various digital and analog signal demodulation techniques, ensuring compatibility with an array of communication standards. Furthermore, users can benefit from its built-in signal generation capabilities, which allows for end-to-end testing of devices and systems under realistic operational conditions.

Portability is another key feature of the Anritsu 373XXA series. The compact design and lightweight structure facilitate easy transport, which is particularly advantageous for field applications where mobility is critical.

Overall, the Anritsu 373XXA series stands out as a versatile and powerful tool for professionals in the RF and microwave field, thanks to its extensive frequency range, advanced measurement technologies, user-friendly interface, and portability. Whether developing new wireless standards or troubleshooting existing systems, the 373XXA delivers precision and reliability essential for today’s dynamic communication landscape.