皓辰团队专业维修，品质保障!!!
专业维修吉时利keithley皮安表 6487，其常见的故障及原因分析如下
故障现象:电压过载故障
原因分析:内部元件（如模拟板上的元件）因高压而损坏，从输入端到ADC采样端的大量电阻、放大器、复用器等失效
Hao Chen team professional maintenance, quality assurance!!
Professional maintenance keithley picoammeter 6487, its common failures and causes are analyzed as follows
Fault phenomenon: voltage overload fault
Cause analysis: Internal components (such as those on the analog board) are damaged due to high voltage, and a large number of resistors, amplifiers, and multiplexers from the input end to the ADC sampling end fail
Fault phenomenon: Abnormal reading:
Cause analysis: the connection cable, test lead or jumper is worn or damaged, the input end of the picoammeter is abnormal, and the internal circuit components are aging or damaged
Failure phenomenon: Communication failure:
Cause analysis: interface damage or poor connection, internal communication circuit failure
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