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Re: Data acquisition

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Am 25.10.2011 19:22, schrieb spintronic:
> On Oct 25, 6:29 pm, Nick Dokos<nicholas.do...@hp.com>  wrote:
>> Shot in the dark: could it be that you have to add delays to give the
>> instrument time to adjust? When you do it from the python shell, line by
>> line, there is a long delay between one line and the next.
> Thanks! You are right but it was the first thing I thought about. So I
> have tried to delay using sleep(t) from the time module (I also sent
> "*OPC?" or "*WAI" commands to a device for synchronization). However,
> it does not help ...

RST is resetting all data and CALC is somehow calculating and returning
data. Without a trigger between RST and CALC, I would not expect any
data...

Maybe the equipment is triggering continuously e.g. every second.
When you were using the shell, you had a good chance to see a trigger
between RST and CALC. With a script, it's not so likely.
OPC won't help, as it would wait for completion of a measurement, but if
you don't trigger, it won't wait.

What kind of instrument are you using? Check for the trigger command.
It may be something like INIT:IMM

Regards,

Dietmar

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Data acquisition spintronic <sidorenko.andrey@gmail.com> - 2011-10-25 08:51 -0700
  Re: Data acquisition Jean-Michel Pichavant <jeanmichel@sequans.com> - 2011-10-25 18:15 +0200
    Re: Data acquisition spintronic <sidorenko.andrey@gmail.com> - 2011-10-25 10:35 -0700
  Re: Data acquisition Nick Dokos <nicholas.dokos@hp.com> - 2011-10-25 12:29 -0400
    Re: Data acquisition spintronic <sidorenko.andrey@gmail.com> - 2011-10-25 10:22 -0700
      Re: Data acquisition Dietmar Schwertberger <news@schwertberger.de> - 2011-10-25 23:31 +0200
  Re: Data acquisition John Gordon <gordon@panix.com> - 2011-10-25 16:43 +0000
    Re: Data acquisition spintronic <sidorenko.andrey@gmail.com> - 2011-10-25 10:31 -0700
      Re: Data acquisition John Gordon <gordon@panix.com> - 2011-10-25 18:34 +0000
  Re: Data acquisition "Paul Simon" <psimon@sonic.net> - 2011-10-25 15:06 -0700
  Re: Data acquisition Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2011-10-25 17:08 -0700
  Re: Data acquisition spintronic <sidorenko.andrey@gmail.com> - 2011-10-26 08:58 -0700
    Re: Data acquisition Dietmar Schwertberger <news@schwertberger.de> - 2011-10-26 19:35 +0200

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