UW CHEMISTRY NMR

Announcments & Equipment Logs

April, 2017

DRX499 – UPDATE : LOCK SYSTEM NORMAL

As far as the tests could show, the lock system is behaving as expected.  We shall keep a close watch, nevertheless. It is possible that the warmer than usual room temperature in the lab could have led to overheating of one of the circuit boards in the lock system leading to the sporadic instability reported.  […]

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UPDATE – DRX499 : LOCK SYSTEM UNDER OBSERVATION

Some of the users complained that they could not lock properly on DRX499.  I will be testing the behavior today and post an update. Unless the fix is a simple/routine one, not much will happen today other than the observation. Depending the severity of the issue, we might interrupt the schedule next week to address […]

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UPDATE : AV300 : BACKUP PROBE INSTALLED – READY FOR USE

While the ATMA probe is being repaired, we will use the broadband BBO probe, that needs to be tuned and matched by hand ! This probe does not have gradient.  Therefore, NO TOPSHIM. You have to shim by hand. If you need assistance to readjust to the new reality, please contact Adrienne or myself. NMR […]

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ALERT ! : AV300 – ATMA PROBEHEAD MALFUNCTION

The system is down currently as the 1H channel of the ATMA probe is not functional. We are in the process of installing a back up probe and update the user base once it is ready for use. PLEASE NOTE : THE BACKUP PROBE WILL HAVE TO BE TUNED/MATCHED BY HAND – USING ‘wobb’ COMMAND.  […]

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UPDATE ! DRX499 – SYSTEM IS READY FOR USE

Users can start reserving time right now.  The system has the TXO-13C,19F {1H} -Z gradient probe shimmed up and calibrated. IMPORTANT : Please make sure you start “edte” and check that the temperature is stable at 298 K.  DEFAULT Shims : USE “rsh stdtxo” STANDARD pulses/power levels :  USE “getprosol” Please ask, if you have […]

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UPDATE – DRX499 : SYSTEM WILL BE READY ON MONDAY, 24 Apr

I am acutely aware of the long down time on this instrument and I convey my sincere gratitude for your patient cooperation all along.  The good news is that, the system is brought to a stable and reliable state as I write this.  Last but not least, the shim up needs to be completed before […]

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ALERT ! DRX499 – SYSTEM DOWN UNTIL FURTHER NOTICE

A power supply failure is identified in one of the main components of the spectrometer and being looked into. This problem is unrelated to the probehead issue we were investigating.  As of now I can’t give a clear estimate of the down time but I hope to update the situation before the end of today. […]

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UPDATE : PHOENIX SERVER BACK ON LINE

If you notice a slowdown when you download data, please contact me with as much information as you can gather, about such a condition.  As of now, downloads from all nodes should proceed smoothly. NMR Facility Manager 4/17/17

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NOTE – FTP SERVER PHOENIX WILL BE OFF LINE FOR 30 MIN

For a short maintenance break, the FTP server will go offline.  Should be back in about 1/2 hour. If this changes, I will post an update to that effect.  Thank you for understanding. NMR Facility Manager 4/17/17

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ALERT ! DRX499 – DOWN FOR HARDWARE MAINTENANCE

Both RF as well as gradient sections need to be inspected/serviced to bring the instrument back to optimal condition. Some of these issues have been pending to be addressed and it is past due to get to these. Thank you for your patience and understanding. I expect the instrument to be back in operation by […]

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