UW CHEMISTRY NMR

Announcments & Equipment Logs

Software

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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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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ALERT ! AV300 DOWN WITH NETWORK ISSUE

The network communication between the host computer and the NMR console is broken and the instrument is unusable until further notice. We will post updates with progress made as it becomes available. As of now the reservation calendar will be frozen. Existing reservations will be honored when the instrument is back online.  If your slot […]

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UPDATE : AV300 – PROGRESS WITH UDRIVE MIGRATION – BUT NOT READY YET

A few more lose ends to tie up before you will be ready to access the UDRIVE, similar to AV301.  But the needed work will be done remotely without disrupting the regular use of the spectrometer. I will post another heads up message when we say it’s ready.  In the interim, your data collection protocol […]

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UPDATE ! AV700 – SYSTEM BACK IN OPERATION – NEW BASE FREQUENCY ! PLEASE READ

The Lock system is back to normal. PLEASE NOTE THE FOLLOWING IMPORTANT CHANGE ! New System Base Frequency :  699.962448 MHz. This reconfiguration is needed to compensate for the long term loss of energy by the Supercon Magnet. How does this affect you ? If you simply open your existing data set and start copying […]

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ALERT ! AV301 – NETWORK ERROR

Connectivity to the systems outside NMR lab is disrupted.  I will try to fix it remotely if feasible.  If not, one of us need to get to the system physically to reset the network. Access to the instrument over the weekend might be disrupted owing to this. NMR Facility Manager 4/21/2018

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ALERT ! AV301 – PHASE 2 : MIGRATING TO UDRIVE COMPLETE

All existing users will now notice that their Topspin file tree shows the following structure: /home/<UWNetid>/udrive/av301/  as the main data tree in the File Browser. Expanding this will show only one branch : /home/<UWNetid>/udrive/av301/<UWNetid>/nmr Underneath this, you will find all your old files residing. So, remember :  This is your data root directory :  /home/<UWNetid>/udrive/av301 […]

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ALERT ! AV301 – UDRIVE – MOVING TO PHASE 2 TOMORROW – Wed, 6 Jul 2017

The default data branch /opt/topspin/<user>/nmr will NO LONGER be visible within AV301 Topspin, starting tomorrow, sometime after 9 am. The data written until that point will be available as a static/frozen file tree via the Phoenix FTP server as of now. Please contact me if you have concerns. NMR Facility Manager 7/5/2017  

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UPDATE ! AV300 – ATMA AND ATMM STABLE

Quick recap :  Many users found that 1H tuning/matching using ATMA or ATMM command did not behave as expected (either a flat wobble curve or no response to turning the tuning/matching capacitors in ATMM). Remedial measures are applied now. I expect the tuning/matching to behave properly for most of the commonly used lock solvents.  Please […]

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UPDATE ! AV500 – TOPSHIM WORKING PROPERLY

All good to run Topshim.  Please let us know if it still has issues. Thanks NMR Facility Manager 6/2/17

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