[Dsg-hallb_magnets] TR817A2 at 325 K, LV cRIO restarted.

[Probir Ghoshal]

Thanks Brian,

Have a nice week end.

Regards

Probir

----- Original Message -----
From: "Brian Eng" <beng at jlab.org>
To: "Probir Ghoshal" <ghoshal at jlab.org>
Cc: "Amrit Yegneswaran" <yeg at jlab.org>, "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org>, "Glenn Young" <gyoung at jlab.org>, "Ramakrishna Bachimanchi" <bachiman at jlab.org>, "Ruben Fair" <rfair at jlab.org>
Sent: Friday, April 21, 2017 2:46:30 PM
Subject: Re: [Dsg-hallb_magnets] TR817A2 at 325 K, LV cRIO restarted.

I've deployed the code that targets a fixed V1 of 15 mV. All the cernox sensors are reporting very similar temperatures (most within a few mK) prior to the change.

I've purposely only deployed this manually (not as a start-up real-time application) so that in the event something goes horribly wrong over the weekend a restart of the cRIO will put it back into a known state (which is currently the procedure to clear errors anyway). However, this also means that if the cRIO loses power it will revert to the older code.

I'll make a log entry shortly.

Tyler,

My code is in the be branch on GitHub which was merged from your Cerenox_325K_fix_V4 branch.

https://github.com/JeffersonLab/clas12-crio-tor-lv/tree/be

If this does end up working we'll have to clean it up and merge it into master later.
--
Brian Eng
Detector Support Group
757-269-6018

> On Apr 21, 2017, at 2:03 PM, Probir Ghoshal <ghoshal at jlab.org> wrote:
> 
> Brian,
> Excellent..!
> Now i get this...this is to target a voltage instead of power..!
> and still is current driven and doing the differential maths for calculating resistance.
> suggest to target 15mV and lower end to a current 400nA...as discussed and agreed with Rama.
> 
> I am happy if you can deploy this at the earliest...as discussed you can do this but please keep Tyler in the loop.
> 
> Regards
> 
> Probir