[Vetroc_daq_sbs] GRINCH HV

[Carlos Ayerbe]

Hi all,

this week we were able to power the GRINCH HV crate and communicate with it. It finds all modules and it looks ok.

I left the GUI open, but I didn't set any voltage and leave it off. Today I checked and I got the HV alarm and I took a screenshot of the GUI (please see attachment)

This is something that was happening with the prototype at ESB with the old computer. We (Evan and I) mentioned this to Chuck and Jack and they were not able to identify the problem (the Bad Battery message doesn't make sense to them. I hope Evan remember better the argument).

Please note that some channels appear to be "corrupted" (in this case, only in this module). I use the word corrupted very freely, because in our experience the voltage to the system is the nominal (before the error). 

I was hoping that with the new computer this problem was corrected, supposing it was a software issue. 

In the old computer, the solution was close the GUI and kill ./start_hv (at rpi16) AND NOT always worked because it failed to identify all the modules. 

I don't know if it is actually a software issue instead of hardware. 

The access to the HV crate through adaq at grinnchbb is easy, just use the alias 'gohv'

May somebody guide us how to solve the problem? 

Thank you

-Carlos

------------------------------------------
Carlos Ayerbe Gayoso
Postdoctoral Research Associate of Physics

The College of William and Mary,
Small Hall 328A

Jefferson Lab, 
CEBAF bldg F379

Phone: 757 291 7889
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