hello! i'm currently working to develop a device that can generate an ultra sonic 2MHz signal to a transmiter/receiver transducer (made especially for this kind of work) used for detecting cracks in metals. normally, this kind of operation is made by a special device which looks like an osciloscope. i allready have the transducer so my plans are to build a device that can generate short blips with this kind of signal 3 times the period (of blip) between the blips. one blip should be minus the cube of 10 in seconds. the device should be able to receive back the signals produced by echos returned from the metal piece that is analized. this signal i would like to see on one of those oscilloscope software type that are available on the internet, so the whole device can be controled by computer. more by token, the device will have two essential parts, the signal generator and the signal receiver which i would like to connect to the computer through the usb or serial port. for starters, a 2MHz signal generator scheme is needed. if anybody can help me pls post here!
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