SYSTEM DESCRIPTION

DIGITAL SUBSYSTEM ASSEMBLIES

7-4DIGITAL SUBSYSTEM

The following paragraphs briefly describe the major assemblies that com-

ASSEMBLIES

prise the 373XXA Digital Subsystem. The digital subsystem provides all

 

system control, I/O interface, digital signal processing, and data pre-

 

sentation functions.

 

The major assemblies that comprise the 373XXA digital PCB subsys-

 

tem are listed below. Refer to Figure 7-3, at left.

A9 Main Processor PCB Assembly

￿A9, Main Processor PCB

￿A13, I/O Interface #1 PCB

￿A14, I/O Interface #2 PCB

￿A15, Graphics Processor PCB

￿A16, Hard Disk PCB

￿A18, Rear Panel Interface

￿Rear Panel Assembly

￿Front Panel Assembly

￿Floppy Disk Assembly

￿A24, VME Bus Terminator PCB

The major components that comprise the A9 Main Processor PCB are:

￿68040 Microprocessor (w/ integrated co-processor) – This is the CPU for the 372XXB system.

￿4 MB DRAM – This is the main system memory. This memory is volatile (non-battery backed). During normal operation, it stores the 372XXB software that is loaded from disk at power-up.

￿8 KB BBRAM – This auxiliary memory chip contains a back-up battery that is continuously recharged whenever power is ap- plied. (The back-up battery has a four year minimum life span.) This chip also contains real time and date clock functions. It is used to store low level boot-up parameters, ALC calibration data, source frequency calibration data, and service log header data.

￿512 KB SRAM – This auxiliary memory is backed-up by a non-rechargeable Lithium battery that provides 200 days (maxi- mum) of power-off protection. It is used to store current and saved front panel setups, trace/normalization data, current RF calibration data, current sweep frequency data, flat power cali- bration data, and the service log error list.

￿VME Bus interface chip – This chip is used to interface the Main Processor PCB to the A13, A14, and A15 digital PCBs (via the VME bus interface).

￿SCSI Bus interface – This chip is used to interface the Main Pro- cessor PCB to the A16 Hard Disk PCB.

373XXA MM

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Anritsu 373XXA manual Digital Subsystem Assemblies, 4DIGITAL Subsystem, A9 Main Processor PCB Assembly

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.