UW CHEMISTRY NMR
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AV301 Log Book
Welcome to the Chemistry NMR Online Log Book – your One Stop portal to communicate about the spectrometer to the Facility Staff in a timely manner.
Please record your comments and relevant observations about AV301 instrument by submitting an entry using the “Post Log Entry” box found below.
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257 Responses to “AV301 Log Book”
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Please note that this probe does not have the VT capability and that is why you are seeing this error. Please do not attempt to do temperature variation.
It brings up the error message: “Get Temperature Unit failed: WriteVtu: Write failed: device not open” It is also unable to connect to the server.
Instrument brings up error message: “Get Temperature Unit failed: WriteVtu: Write failed: device not open” It will not connect to the host server either.
Hester
As we announced on 31 May, this double resonance probe is incapable of VT variations and the temperature you see is not a valid number, as you know. You can safely ignore this value and proceed with your NMR.
the temperature is set to 298K but the reading does not budge from 752K
Delwin
We are almost done with lineshape optimization. I am hoping to release the instrument in an hour.
Is the AV301 usable? Can you post an update either way on the website or log book?
Auto Wobb took a ridiculous amount of time to find the optimum settings, spent most of my time tune and matching the wrong way.
The user before you has turned off the VT heater and there was not temperature control. The sample temperature reached 283 K and flucuating and the shim set you had was not optimized for this temperature variation. You should always make sure the VT is running and the sample temperature is stabilized.
Peaks were broad and not well defined for all 4 NMR samples attempted.