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<== Date ==> <== Thread ==>

Subject: Re: Converting raw to eng in a waveform
From: Tim Mooney <[email protected]>
To: Di Maio Franck <[email protected]>
Cc: [email protected], Kim Changseung <[email protected]>
Date: Wed, 5 Dec 2012 10:37:26 -0600 (CST)
Hi Franck,

One possibility would be to have the device support for the waveforms also be
"device" support for records that hold the scaling values.  You would have
device support maintain for each waveform record a device-private structure
that holds the scaling data.  The scaling-value records would indicate to which
waveform they pertain in their DTYP fields.  Device support would update the
device-private data when scaling records process.  Each waveform record would
hold a pointer to its device-private structure in its DPVT field.

Tim

----- Original Message -----
> From: "Di Maio Franck" <[email protected]>
> To: [email protected]
> Cc: "Kim Changseung" <[email protected]>
> Sent: Wednesday, December 5, 2012 10:12:35 AM
> Subject: Converting raw to eng in a waveform
> Dear all
> 
> We have a question about implementing device support for an ADC that
> returns values in a waveform record, not using asyn.
> If we want the data to be converted from the ADC voltage range into
> user's engineering data, we need engineering limits or scaling factors
> or...
> Seems that waveform is not as detailed as ai for that.
> 
> I guess that we are not the only one in the globe having this issue.
> I'll appreciate to have some indication on the implementation.
> 
> Thanks!
> 
> Franck
> 
> 
> Franck Di Maio
> ITER Organization, Building 72/279, CHD, Control System Division
> Route de Vinon sur Verdon - 13115 St Paul Lez Durance - France
> Phone: +33 4 42 17 64 05

-- 
Tim Mooney ([email protected]) (630)252-5417
Software Services Group (www.aps.anl.gov)
Advanced Photon Source, Argonne National Lab


References:
Converting raw to eng in a waveform Di Maio Franck

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