Whenever I have an intermittent problem, I think of temperature and fans.
Temperature variation can cause frequency to change, so that you no longer
see the lock.
I hope that helps.
Jay
________________________________
> From: main_at_ammrl.groups.io on behalf of Wang, Tianzhi via groups.io
> Sent: Thursday, July 31, 2025 12:17 PM
> To: main_at_ammrl.groups.io <main_at_ammrl.groups.io>
> Subject: [AMMRL] AVIII lock lost problem.
Dear All
I was experiencing an intermittent lock loss issue on my AVIII 800 MHz NMR
spectrometer with a cryoprobe (CP). The lock was lost and then came back
automatically when experiments were running or idle recently. It looks like
it became better after I rebooted the BSMS unit, but it happened again after
2-3 weeks. My best guess is that the L-TRX board was not stable, but I don't
have a spare L-TRX board to test. I checked all the cables and connectors
which are fine. Is there anyone who can share the experience to solve
such problem with me?
Best,
Tianzhi
-------------------------------------------------------------------
Tianzhi Wang, Ph. D.
NMR Manager
Sealy center for Structural Biology & Molecular Biophysics
University of Texas Medical Branch,
301 University Bvld, NMR dockside building, Rom 1.104
Galveston, TX 77555-1157
Email: tiawang_at_utmb.edu<mailto:tiawang_at_utmb.edu>
(409)7476821 (O)
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Received on Thu Jul 31 2025 - 11:37:57 MST