TROUBLESHOOTING

SYSTEM DOES NOT BOOT-UP

 

Step 8.

Using a DMM and/or an oscilloscope, measure the +5 volt

 

 

 

power supply at connector J13 on the Motherboard. Refer

 

 

 

to Figure 5-1 and Table 5-1, (page 505).

 

Step 9.

Press the 373XXA Power key off, and and reinstall the A13

 

 

 

and A14 PCB’s removed in Step 6.

 

If any of the DC voltage tests fail in steps 1 through 8 above, replace

 

the power supply module.

 

If any of the DC voltage tests fail with the power supply module con-

 

nected to the 373XXA Motherboard — but pass with it disconnected —

 

then the most probable cause of the failure is that one of the 373XXA

 

assemblies is demanding an excessive amount of current. To locate the

 

failed assembly:

 

1.

Press the 373XXA Power key off, and unplug a single assembly.

 

2.

Press the 373XXA Power key on, and note if the failed power sup-

 

 

ply functions normally.

 

3.

Repeat Steps 1 and 2 until an assembly is found that clears the

 

 

power supply failure. The removed assembly is suspect and

 

 

should be replaced.

5-5SYSTEM DOES NOT

If the 373XXA does not boot-up when it is powered-up, perform the

BOOT-UP

checks described below.

Boot-up Process The boot-up process is controlled by the firmware located on the A9 Sequence PCB assembly (processor PROM) The boot-up activities include:

￿Testing and initializing the A9 Main Processor PCB

￿Testing communication between the A9 PCB and the digital PCB assemblies (A13, A14, A15, A16). The following messages will be displayed at this juncture:

￿Initializing front panel knob (A14/A20)....

￿Initializing GPIB (A13/A18)....

￿Initializing external keyboard (A13)....

￿Initializing external trigger (A13/A5)....

￿Initializing front panel (A14/A20)....

￿Loading of system software from disk into memory

￿Starting operation of the system software.

￿System is booting—message is displayed.

373XXA MM

5-7

Page 61
Image 61
Anritsu 373XXA manual Troubleshooting System does not BOOT-UP, 5SYSTEM does not, Boot-Up

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.