UW CHEMISTRY NMR

Announcments & Equipment Logs

June, 2014

AV500 – SHIM UPDATE

Some users had complained that they are not able to get good line shape for their sample and Topshim software did not help, apparently, either.   My experience today has been different. The spectrum shown below is the result of a successful shimming operation with Topshim, for running this reasonably demanding 1D spectrum that suppresses 95% […]

Posted in Spectrometer, Usage | No Comments »

DRX499 – UPDATE ON LINESHAPE

Users had noticed that the lineshape on this instrument has been rather poor.  This is primarily due to the fact that the magnet is still taking its own time to settle down after the cryoshimming and B0 field adjustment approximately a month ago. Supercon Magnets are notoriously unpredictable when it comes to their expected duration […]

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GENERAL ALERT ! COMPRESSED AIR INTERRUPTION TOMORROW, Wed, 25th Jun

Facilities and services has announced a 2 hour window of compressed air disruption from 5.00 am to 7.00 am on Wedensday, 25th June ’14.  The walk-on users won’t be affected by this event but those who want to plan overnight runs should take note that the VT system will be non-functional during this event.  Please […]

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UPDATE ! DRX499 – SYSTEM BACK TO NORMAL

Please let us know if you face any issues again.

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ALERT – DRX499 – COMMUNICATION SOFTWARE BEING REINSTALLED

Normal acquisition is not proceeding due to a corruption of low level software on the host computer.  This is being re-installed and the system should be up soon.

Posted in Software, Spectrometer | No Comments »

UPDATE – AV700 : ISSUES RESOLVED

Acquisition as well as Lock problems reported earlier have been fixed. Please send us a feedback if you still notice any issues with as much information that you can provide.

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UPDATE : DRX499 – AVAILABLE FOR USE

Many of the issues on the drx499 users have noticed in the past two weeks were due to a faulty board. This board has been replaced and the console is now fully functional. A test run shows normal operation. Please contact Adrienne (amr0311@uw.edu) or Rajan (paranji@chem.washington.edu) with questions.

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UPDATE : DRX499 – AWAITING REPLACEMENT CIRCUIT BOARD

A faulty ADC board is recognized to be the most probable cause of problems and an order for its replacement was placed with instructions for expedited shipping. We will update the status once the board arrives and we test it out in the system.

Posted in Hardware, Spectrometer | No Comments »

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