Experimental Physics and
Industrial Control System

"Hill, Jeff" <[email protected]> · Wed, 5 Dec 2012 23:25:21 +0000

Hi Frank,

FWIW, On the system I am working on I intend to do the
device to engineering units break point table conversion,
and also the floating point conversion using MATLAB or C 
code instantiated into the FPGA; this will reduce the 
processing load on the CPU. I will store the waveform, 
referenced by the val field in the waveform record, in 
single precision floating point scaled to engineering 
units. I _will_ need to arrive at a good idea for 
configuring the parameters for the waveform's break 
point table. Possibly they will be stored as an array 
in another record.

Jeff

> -----Original Message-----
> From: [email protected] [mailto:[email protected]]
> On Behalf Of Di Maio Franck
> Sent: Wednesday, December 05, 2012 9:13 AM
> To: [email protected]
> Cc: Kim Changseung
> 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

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System