[Halld-controls] Hall D controls meeting on March 8, 2018

Brian Eng beng at jlab.org
Thu Mar 8 16:25:53 EST 2018


I don't know if there is a clear answer to that.

The 3rd controller is obviously brand new, so in theory it shouldn't have any issues, but it also hasn't been tested for any extended period of time.

The 2nd (current) controller has shown some quirks, but they only seem to manifest when first starting up. We know this controller works fine since after the chassis was swapped out and even longer prior to the chassis having problems.

So the question is should we swap the controllers? What about the chassis as well?

Since it looks like they extended the spring run rather than tack it on to the fall run whatever is chosen we'll have a few weeks to have it running.

Personally I would either leave both controller/chassis as-is (don't mess with a running system) or swap them both out (to get some runtime under their belts). I don't have a strong opinion either way, so if someone else does we should just go with that.

> On Mar 8, 2018, at 4:08 PM, Hovanes Egiyan <hovanes at jlab.org> wrote:
> 
> Thanks Brian,
> 
> do you think it is better to switch to the new controller and see if the network port issue goes away?
> 
> If it does then we could keep the current controller with its network port issue as spare.
> 
> Hovanes.



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