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Professional maintenance of Agilent N5224B PNA microwave network analyzer, its common failures and causes are analyzed as follows
Fault point: Low measurement transmission signal and uneven curve
Cause analysis: It may be that the directional coupler of port 2, the B-channel receiving part (including the sampler, the second mixer, and the multiplex switch of the ADC circuit) are faulty. It may be that the sampler is damaged or the coupler output signal is abnormal.
Fault: An error message is displayed after working for a period of time
Cause analysis: It may be that the automatic level control circuit or power module has a problem, usually due to the poor performance of a component, the circuit has a virtual solder joint or the temperature is too high.
Fault point: The screen has a phase lock error
Cause analysis: It may be caused by a hardware failure in the phase-locked circuit, such as a damaged R-channel sampler, or a poor cable connection associated with the phase-locked loop. In addition, the signal source part, the signal separation part and the related circuit may also fail.
By understanding the common faults of the equipment, you can better maintain and use it to ensure its long-term stable operation. If you can not solve, welcome to contact Hao Chen! Our maintenance team has a wealth of practical experience and professional maintenance process, can provide you with fast, reliable, quality maintenance service!
