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Hi Tom,</div>
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Thanks for the info.</div>
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I have a morning and early afternoon filled with BlueJeans meets, so I'll plan to take a look on one of the HDice PCs around 3:00PM.</div>
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I have a few data sets from fsNMR runs saved locally on one of DSG's PCs so in the mean time between meetings, I'll look through those data sets to see if there's a set that doesn't have a peak and use that to start offline development of the fix.</div>
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Thanks,</div>
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Tyler<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> thomaso@jlab.org <thomaso@jlab.org><br>
<b>Sent:</b> Wednesday, October 28, 2020 9:46 AM<br>
<b>To:</b> Tyler Lemon <tlemon@jlab.org><br>
<b>Cc:</b> thomaso@jlab.org <thomaso@jlab.org>; dsg-hdice@jlab.org <dsg-hdice@jlab.org><br>
<b>Subject:</b> Re: [dsg-hdice] fsNMR program broken when using background files</font>
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<div class="PlainText">Hi Tyler,<br>
<br>
Yes, use the overall maximum value for the background scaling. I forgot<br>
to mention that. If you are ready now, we can log off the NMR PC so you<br>
can check it out. Let me know when you would like to start.<br>
<br>
Thanks,<br>
Tom<br>
<br>
> Hi Tom,<br>
><br>
> In the cases where there is no peak in the background data, how should the<br>
> program handle it?<br>
><br>
> Should it just use the overall maximum value in the background scaling?<br>
><br>
> Tyler<br>
> ________________________________<br>
> From: dsg-hdice <dsg-hdice-bounces@jlab.org> on behalf of thomaso@jlab.org<br>
> <thomaso@jlab.org><br>
> Sent: Tuesday, October 27, 2020 5:24 PM<br>
> To: dsg-hdice@jlab.org <dsg-hdice@jlab.org><br>
> Subject: [dsg-hdice] fsNMR program broken when using background files<br>
><br>
> Hi Tyler,<br>
><br>
> Xiangdong and I confirmed the new 50 Ohm / 1 MOhm switch you added worked<br>
> fine.<br>
><br>
> However, we ran into a new issue with the fsNMR program. We took a set of<br>
> sweeps for our background without issue. The problem arises when we<br>
> select a previous background scan to use for subtraction during the signal<br>
> scan.<br>
><br>
> Normally the program looks for the peak value of the background curve as a<br>
> step in the background normalization/subtraction process.<br>
><br>
> In our case, we are looking for the signal in part of the curve. There is<br>
> no peak in the region we are scanning. As a result, the program is unable<br>
> to calculate values for R, X, and Y. The frequency column is fine since<br>
> those values are not manipulated. The phase column is fine due to that<br>
> being a straight subtraction between the two phase values (no<br>
> normalization used).<br>
><br>
> Could you please investigate this issue as soon as you can? We can give<br>
> you access to the PC anytime you need, just let us know.<br>
><br>
> Thanks,<br>
> Tom<br>
><br>
> _______________________________________________<br>
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> dsg-hdice@jlab.org<br>
> <a href="https://mailman.jlab.org/mailman/listinfo/dsg-hdice">https://mailman.jlab.org/mailman/listinfo/dsg-hdice</a><br>
><br>
<br>
<br>
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