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PGA300EVM-034 OUT输出



hi!我在使用PGA300EVM-034,现在已经能从windows端软件上看到压力的波形(见下图),但是在EVM的OUT引脚上测到的信号很奇怪(见下图)。从芯片结构上看,OUT引脚应该输出模拟信号,但我用示波器测到的不是这样。我已经检查过跳线,连接应该没问题(Close J6, J7, J8, J14 (pins 2-3) and J16,Open J4, J5, J9 and J10)。请问OUT输出这个信号是否正常,为什么看不到随压力变化的模拟信号??



 

谢谢!