Hello Mike,
See if the software patch related to tuning is up to date. It happened in
my previous position on a broad band channel and I wasn't able to tune on
only broadband. After the update, it worked well without any issues.
Best,
Anjaneyulu
On Fri, Nov 14, 2025 at 8:33 AM Mike Lumsden via groups.io wrote:
> Hello - I have a BBFO-style iProbe here _at_ 400 MHz where atma is failing
> repeatedly on the proton channel. The error message references "unexpected
> motor movement" and if I dig deeper into the logs I see mention of motor
> over-current. When I issue the atma command, the proton wobb curve
> displays and is very poorly matched. ATMA makes a brief attempt to optimize
> (as the wobb curve shifts slightly) and then the error condition.
>
> What have I tried?
>
> - atmm (which fails in the same manner)
> - "atma reset"
> - "atma homing"
> - Tuning 1H as F1 and also as F2 (with 19F, 13C and 15N as F1)
> - power cycle
>
> With the iProbes, nothing is easily accessible or visible and so Im not
> sure what else can be done. Wondering if there are any other suggestions
> out there.
>
> Cheers,
> Mike
>
>
>
--
Anjaneyulu Putta, Ph.D.
NMR Manager
Department of Chemistry & Biochemistry
College of Arts & Sciences
Boise State University
1910 University Drive, Boise, Idaho, 83725
Email: anjaneyuluputta_at_boisestate.edu
Phone: (208) 426-4912
https://www.boisestate.edu/chemistry/
https://www.boisestate.edu/chemistry/nmr-service-center/
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Received on Fri Nov 14 2025 - 07:39:47 MST