[Dsg-hallb_magnets] Unsuccessful test of Fast-Daq digital filter

[Ruben Fair]

Ok thank you Tyler

Have a good weekend

Ruben

> On Jan 13, 2017, at 4:30 PM, Tyler Lemon <tlemon at jlab.org> wrote:
> 
> Hello Ruben,
> 
> The test of the digital filter added to the Torus Fast-Daq cRIO code was unsuccessful.
> 
> After deploying the code with the filter inserted, I received an FPGA error. I then tried to test the filter in a different configuration on the FPGA, which required the FPGA code to be recompiled. The recompilation failed.
> 
> At this time, the original, working Fast-Daq code has been redeployed to the cRIO and the cRIO is back online. I will look into what caused the FPGA error and the recompilation failure. I will also investigate different strategies for implementing the filters.
> 
> Best regards,
> Tyler
> 
> From: "Ruben Fair" <rfair at jlab.org>
> To: "Tyler Lemon" <tlemon at jlab.org>
> Cc: "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org>
> Sent: Friday, January 13, 2017 2:59:29 PM
> Subject: Re: [Dsg-hallb_magnets] request to take Torus Fast-Daq cRIO offline to        test filter
> 
> Hi Tyler,
> 
> Yes - I agree with your plan - looks sensible to me.
> 
> And yes - go ahead and take it offline for your tests.
> 
> Cheers
> 
> Ruben
> 
> 
> From: "Tyler Lemon" <tlemon at jlab.org>
> To: "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org>
> Sent: Friday, January 13, 2017 1:30:27 PM
> Subject: [Dsg-hallb_magnets] request to take Torus Fast-Daq cRIO offline to        test filter
> 
> Hello Ruben,
> 
> Can the Torus Fast-Daq cRIO be taken offline this afternoon to test the digital filter added to the FPGA code? 
> 
> Before deploying the code with the new filter implemented, I will start the Fast-Daq logging via the EPICS GUI so there will be a log of the voltage tap data before and after the filters are implemented. 
> 
> If all steps go well, my plan for testing the filters will be:
> 1.) Record Fast-Daq data via EPICS of signals using the original code deployed right now.
> 2.) Deploy new cRIO code with filter added to filter 60Hz noise.
> 3.) Record Fast-Daq data via EPICS after filter is added.
> 4.) Test varying widths of the filter's stopband to visually find what seems to filter 60Hz noise best.
> 5.) Redeploy original code.
> 6.) Review recorded data to confirm what filter parameters worked best.
> 
> If anything negative happens at any point, I will stop and redeploy the original code.
> 
> Please let me know if there are any steps that should be added to my test plan above.
> 
> Best regards,
> Tyler
> 
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