[Dsg-rich] change low temperature alarms on RICH FPGA temperatures map?

[Amrit Yegneswaran]

hello, 
i don't understand the logic for the previous request to box in red temps <37C. 
i think it is important to notice the hot-spots. 
above 65C the timing in the FPGAs will be flaky, even though the FPGAs are rated to 85C. 
so, having a red box to indicate temperatures near 65C, lets say >63C would be useful. 

i agree with tyler that lower temps aren't bad. 
one concern might be that he sensor is not reading/communicating, in which case the value should be 0C or lower than the ambient. 
so values below the ambient could also be boxed in red to indicate a potential problem. 
the ambient in the hall is, measured over the years, ~ 18C). 
so if the temp drops below 15C these could also be boxed in red. 

amrit 



From: "Nathan Baltzell" <baltzell at jlab.org> 
To: "Tyler Lemon" <tlemon at jlab.org> 
Cc: "dsg-rich" <dsg-rich at jlab.org> 
Sent: Wednesday, November 1, 2017 2:39:06 PM 
Subject: Re: [Dsg-rich] change low temperature alarms on RICH FPGA temperatures map? 

Hi Tyler, 

It’s colored according to previous requests from RICH group. 

-Nathan 



> On Nov 1, 2017, at 14:33, Tyler Lemon <tlemon at jlab.org> wrote: 
> 
> Hello Nathan, 
> 
> We've been monitoring the RICH electronics during their testing using the RICH FPGA Temperatures Map EPICS screen and have noted that if a temperature is < ~37C, the indicator shows an orange warning. 
> 
> Can the low temperature warnings be removed from this screen or changed to a different color since low temperatures are not a bad thing for the RICH electronics? 
> 
> Best regards, 
> Tyler 


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