<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=Windows-1252">
</head>
<body>
Hi Brian,
<div><br>
</div>
<div>Thank you for checking the vi, I <span style="-webkit-tap-highlight-color: transparent; -webkit-text-size-adjust: 100%;">will try again early tomorrow morning.</span></div>
<div><span style="-webkit-text-size-adjust: 100%;"><br>
</span></div>
<div><span style="-webkit-text-size-adjust: 100%;">Yes, I left the dual IPS vi on the screen, but not running (to avoid vi interface, if any). Sometimes different VIs don’t like each other—-just like the FRS and NMR scan.<br>
</span>
<div><br>
</div>
<div>Talking about FRS, could you please add it back to the project so I can get the resonance information, in case we have difficulty to solve the fsNMR power issue tomorrow morning? I need to find a work around to move to the next step (while waiting for
fixing the problem).</div>
<div><br>
</div>
<div>Thanks,</div>
<div><br>
</div>
<div>Xiangdong </div>
<div><br>
</div>
<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Brian Eng <beng@jlab.org><br>
<b>Sent:</b> Thursday, November 19, 2020 12:46 AM<br>
<b>To:</b> Xiangdong Wei <xwei@jlab.org>; Tyler Lemon <tlemon@jlab.org>; dsg-hdice@jlab.org <dsg-hdice@jlab.org><br>
<b>Subject:</b> Re: Sorry, another Emergency Help is needed</font>
<div> </div>
</div>
<style type="text/css" style="display:none">
<!--
p
{margin-top:0;
margin-bottom:0}
-->
</style>
<div dir="ltr">
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
I logged in to hdicenm2 with the hdice account to take a quick look at the power settings in the fsNMR.vi code to make sure it wasn't anything obvious causing those symptoms.</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
I couldn't see/find anything and manually running the set/read VIs (the only 2 I ran [it started at -50, I changed it to -60, then back to -50]) for the attenuator A works fine.</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Also the dual power supply vi was on the screen when I logged in but not running; is that to be expected?</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
I've since logged off, but left all the VIs I opened on the screen.</div>
<div>
<div id="x_appendonsend"></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<hr tabindex="-1" style="display:inline-block; width:98%">
<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Xiangdong Wei <xwei@jlab.org><br>
<b>Sent:</b> Wednesday, November 18, 2020 11:57 PM<br>
<b>To:</b> Tyler Lemon <tlemon@jlab.org>; Brian Eng <beng@jlab.org>; dsg-hdice@jlab.org <dsg-hdice@jlab.org><br>
<b>Subject:</b> Sorry, another Emergency Help is needed</font>
<div> </div>
</div>
<div>Hi Tyler,
<div><br>
</div>
<div>We successfully transferred a polarized target from DF to PD and measured target polarization there with NMR rack2, and then transferred it to IBC in UITF.</div>
<div><br>
</div>
<div>Since the NMR signal of a fully polarized target is huge, I had to use very low power, such as-40, -50, and -60dBm. </div>
<div><br>
</div>
<div>The fsNMR on the control rack did not allow me to run with those power, and sending high power instead. -30 was fine, but -50dBm was changed to -18dBm by the fsNMR VI, and -40dBm was changed to -24dBm. The error pictures are attached here. Please take
a look at the fsNMR ASAP. I will be at UITF tomorrow morning to check the vi when you are done.</div>
<div><br>
</div>
<div>Since the IBC magnets are controlled by the rack2 pc also, please don’t change the magnet settings. The testing frequency range should be between 1 and 2 MHz; and power is -60, -50, -40, and maybe -30, to avoid accidentally de-polarize the target. The
IBC solenoid is at ~0.9Tesla.</div>
<div><br>
</div>
<div>Thanks, </div>
<div><br>
</div>
<div>Xiangdong </div>
<div><br>
</div>
<div><br>
</div>
</div>
</div>
</div>
</div>
</body>
</html>