Data acquisition

[spintronic]

On Oct 25, 6:15 pm, Jean-Michel Pichavant <jeanmic... at sequans.com>
wrote:
> spintronic wrote:
> > Dear friends,
>
> > I have a trouble with understanding the following. I have a very short
> > script (shown below) which works fine if I "run" step by step (or line
> > by line) in Python shell (type the first line/command -> press Enter,
> > etc.). I can get all numbers (actually, there are no numbers but a
> > long string, but this is not a problem) I need from a device:
>
> > '0.3345098119,0.01069121274,0.02111624694,0.03833379529,0.02462816409,0.0774275008,0.06554297421,0.07366750919,0.08122602002,0.004018369318,0.03508462415,0.04829900696,0.06383554085, ...'
>
> > However, when I start very the same list of commands as a script, it
> > gives me the following, which is certainly wrong:
>
> > [0.0, 0.0, 0.0, 0.0, 0.0,...]
>
> > Any ideas? Why there is a difference when I run the script or do it
> > command by command?
>
> > ===========================
> > from visa import *
>
> > mw = instrument("GPIB0::20::INSTR", timeout = None)
>
> > mw.write("*RST")
> > mw.write("CALC1:DATA? FDATA")
>
> > a=mw.read()
>
> > print a
> > ===========================
> > (That is really all!)
>
> > PS In this case I use Python Enthought for Windows, but I am not an
> > expert in Windows (I work usually in Linux but now I need to run this
> > data acquisition under Windows).
>
> Just in case you have a local installation of visa and it silently fails
> on some import,
>
> try to add at the begining of your script:
> import sys
> sys.path.append('')
>
> When using the python shell cmd line, '' is added to sys.path by the
> shell, that is one difference that can make relative imports fail in
> your script.
>
> If it's still not working, well, it means the problem is somewhere else.
>
> JM

Hi!

Thanks! I have just tried. Unfortunately, it does not work ...

Best,
AS