Hi, I'm building a device testing tool. And I'm using an arduino to read serial data. I've build a VI but the output of VISA READ is a string witch has a precision of 2 decimals. I need at least 3 decimals. Does anyone have an idea on how to achieve that? I've posted the VI's I use as well as the arduino control program.

Hi Teun, your received string reads "4.58 " - with a linebreak included! So you probably receive something like those chars: "4" "." "5" "8" CR LF ! That are exactly 6 chars and you receive a float with two decimals (after the decimal separator). What else do you expect? When you want more "precise" floats you need to change your Arduino sketch to actually send them! (Using a format code like "%.5f" with an appropriate "printf"-command should do the trick…)

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how to improve visa read accuracy?

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Thanks GerdW you were right!

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how to improve visa read accuracy?

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