Ultrasonic Development Board [Dayu Electronics]

　　1、Development board overall image

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　　2、Where should the oscilloscope ground be connected on the board?

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　　3、Check whether the 5V DC supply on the board is normal

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　　4、Check whether the 3.3V DC supply on the circuit is normal

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　　5、Measure whether the square wave output from the MCU is normal

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　　6、Measure whether the signal from the pulse transformer to the ultrasonic transducer is normal

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　　7、Measure the received raw signal

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　　8、Measure the raw signal in a one-transmit-one-receive setup

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　　9、Test the first-stage amplified signal after band-pass filtering

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　　10、Test the second-stage amplified signal after band-pass filtering

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　　11、Test the signal after envelope detection and amplification

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