Expected output from an RM-1501 RS232 interface?

Posted by Jon Cage on Stack Overflow See other posts from Stack Overflow or by Jon Cage
Published on 2010-04-07T09:54:15Z Indexed on 2010/04/07 16:03 UTC
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c++

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rs232

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rm-1501

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serial-port

I have an old RM-1501 digital tachometer which I'm using to try to identify the speed of an object.

According to the manual I should be able to read the data over a serial link. Unfortunately, I don't appear to be able to get any sensible output from the device (never gives a valid speed). I think it might be a signalling problem because disconnecting the CTS line starts to get some data through..

Has anyone ever developed anything for one of these / had any success?

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