UW CHEMISTRY NMR
Announcments & Equipment Logs
Hardware
UPDATE ! AV500 – INTERIM SOLUTION IN PLACE
While we are waiting for replacement of the compromised circuit board, we have patched this unit together to function as a two-channel instrument. The BBI-Z gradient probe is paired with this so that you can pulse two nuclei at a time i.e. 13C with 1H decoupling OR 31P with 1H decoupling, as examples. In a […]
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UPDATE : AV500 – SYSTEM WILL BE DOWN UNTIL FURTHER NOTICE
The RF related issue is not fully resolved yet. As I mentioned before, there is a potential probehead change that might be called for. There is no clear correlation between the electronics problem mentioned above and the probehead’s condition at this point. This probe has been giving a rather noisy ‘wobb’ signal as many of […]
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UPDATE – 2 : AV300 IS BACK ON TRACK !
The AV500 is the only system that is yet to be revived. But, I would like to alert you to the fact that, the revival of this instrument might take longer. In fact, it is possible that it is not ready by today. More updates will be coming as the situation evolves. Thank you, as […]
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UPDATE ! – AV300 AND DRX499 ARE UP; OTHER SYSTEMS STILL DOWN
AV301 : A computer related glitch is the main cause behind the failure and our IT Tech is working on this. AV500 : A malfunctioning circuit board is the obstacle to reviving the system fully. It is possible that the probehead is having issues too. Stay tuned for more updates. NMR Facility Manager 9/9/19
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ALERT ! SPORADIC ISSUES WITH NMR SYSTEMS – Thunder and Lightning !
The excitement over the weekend brought by the Weather gods, did leave a bit of an imprint on the NMR systems. Though you may not see anything amiss immediately, some of them may not work as expected. As I speak, I am making sure the systems get back to normal, one by one. I will […]
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ALERT ! AV700 – SOLUTIONS TO SOLIDS SWITCH SOON
All 700 NMR users please take note that the system will move to solid state NMR mode roughly in a week’s time from today. Our current estimate is that the instrument will remain in solids mode for about 2 months. We shall assess the situation towards the end of that window and see if the […]
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UPDATE : AV700 – VT CALIBRATION COMPLETE
With the backup chiller in place, the VT calibration for the high temperature range is complete. Now, you can simply request the temperature you need to see at the sample. The system will automatically adjust the temperature measured at the sensor to achieve this. I show below an example to demonstrate the accuracy achieved. The […]
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ALERT ! AV700 – Ultra low T Option broken until further notice
The X-treme chiller and associated hardware that allowed us to reach low temperatures in the vicinity of -65C seamlessly, is compromised. Until we come up with a reliable solution, the system’s temperature range is restricted to go from -10 C to higher temperatures. Since the backup chiller unit is in place, the VT calibration values […]
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QUICK UPDATE : BOTH AV300 AND DRX499 FUNCTIONING OK
Over the weekend there were two log posts on the instruments’ functionality. AV300 : Sample handling and spinning is confirmed to be ok DRX499 : Normal acquisition/processing confirmed. Please do keep us posted as before, if you observe abnormalities. THANK YOU ! NMR Facility Manager 3/4/19
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UPDATE ! AV300 – PENDING ISSUES RESOLVED – SEE DETAILS
First of, the system is ready for use ! NETWORKING ISSUE : The temporary network glitch is resolved now and users can login with their UWNetid and store data in the UDRIVE. If you notice anything different with your account, please send me an email. SAMPLE LANDING AND SPINNING OK : Lot of debris and […]
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