[Dsg-hallc_gem] Hall c gem gas flow monitoring

Ching Him Leung cleung at jlab.org
Fri May 9 15:53:29 EDT 2025


Hi Marc

So I powered it on without the network cable. And this is what being shown on the display.

I am not sure if this a good sign or not

Ching Him

[image/jpeg]
________________________________
From: Marc Mcmullen <mcmullen at jlab.org>
Sent: Friday, May 9, 2025 1:30 PM
To: Ching Him Leung <cleung at jlab.org>; Dsg-hallc_gem at jlab.org <dsg-hallc_gem at jlab.org>
Subject: Re: Hall c gem gas flow monitoring

I would unplug it for a minute or two, disconnect the network cable. Power it back on with the display connected and see if it powers up and displays a normal Rpi screen (all without the network plugged in).

If that works, then plug in the network cable.
________________________________
From: Ching Him Leung <cleung at jlab.org>
Sent: Friday, May 9, 2025 12:49 PM
To: Marc Mcmullen <mcmullen at jlab.org>; Dsg-hallc_gem at jlab.org <dsg-hallc_gem at jlab.org>
Subject: Hall c gem gas flow monitoring

Hi Marc

We think there might be some issue with the rpi for GEM gas flow monitoring in hall c. We tried power cycling it, but it did not respond.  We hook up a display to the rpi, but nothing shows up on the screen.

Do you have some suggestions?

Thank you
Ching Him
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