[dsg-hdice] HDice NMR Rack 1 reliability issues

[Peter Bonneau]

Antiquated HDice instrumentation and computer cause issues on rack #1; 
/not the upgrade work done by DSG/.


DSG recommends to improve reliability of rack #1 by doing the following:

1.Replace RF generator model# R&S SMY01 (discontinued by manufacturer 
years ago) used in rack #1 with the same model used in rack #2.

2.Replace or repair computer.

2.1.Computer crashes caused last week’s failures.

2.2.Crashes cause corruption of configuration settings of hardware.

2.3.Crashes can occur anytime, since computer problems still exists.

*_Note: LabVIEW FRS program has not changed from the working version on 
rack #2._*

A property transfer of the NMR computers mentioned in the email below is 
pending approval by HDice.




On 9/19/2018 8:33 AM, Amanda Hoebel wrote:
> Hi Xiangdong,
>
> It does not appear to be the fault of the FRS program, but of the RF 
> generator.  The RF generator performs a self-test and if there is 
> something wrong with the unit, the status light will blink.  Please 
> let us know where there is a spare RF generator and we will replace it.
>
> Regards,
> Amanda
>
> ------------------------------------------------------------------------
> *From: *"Xiangdong Wei" <xwei at jlab.org>
> *To: *"Amanda Hoebel" <amandah at jlab.org>
> *Cc: *dsg-hdice at jlab.org
> *Sent: *Tuesday, September 18, 2018 3:14:02 PM
> *Subject: *The FRS program is broken
>
> Hi Amanda,
>
> The FRS program on the NMR Rack 1, which was fixed last week, failed 
> again while I was running it this morning. The "status" light of the 
> RF generator started blinking during the scan and noise went very 
> high. The attached pictures shown:
>
> 1. A normal scan from Rack 2.
> 2. A noisy scan from Rack 1 when the status light blinked intermittently.
> 3. A noisy scan from Rack 1 when the status light was flashing 
> continuously.
>
> The error message "4" displayed when I pushed the "status" button. 
> According to the manual, this means the RF level setting was not 
> satisfied.
>
> Would you please take a look soon?
>
> Thanks,
>
> Xiangdong
>
> /*Xiangdong Wei*/
>
> //x-5266
>
>
> ------------------------------------------------------------------------
> *From: *"Amanda Hoebel" <amandah at jlab.org>
> *To: *dsg-hdice at jlab.org
> *Sent: *Friday, September 14, 2018 1:03:47 PM
> *Subject: *Re: [dsg-hdice] Please help me to login the HDice rack 1 
> computer
>
> Hi Xiangdong,
>
> The FRS program is fixed now. The program was not working due to an 
> incorrect port setting for the RS-485 hub. We believe this setting may 
> have been changed due to a computer crash. During our debugging, we 
> discovered the computer for Rack #1 crashed every time it was 
> restarted. Pete has transferred the computer to you so that you may be 
> administrator for it. The computer will need to be taken to the 
> computer center to fix the crashes and create the group account 
> previously discussed.
>
> Regards,
> Amanda
>
> ------------------------------------------------------------------------
> *From: *"Peter Bonneau" <bonneau at jlab.org>
> *To: *dsg-hdice at jlab.org
> *Sent: *Thursday, September 13, 2018 1:49:23 PM
> *Subject: *Re: [dsg-hdice] Please help me to login the HDice rack 1 
> computer
>
> There is nothing DSG can do regarding the configuration of the 
> computer in the newly completed NMR Rack #1.
>
> Rack #2 computer disk was originally built from the old Rack #2 HDice 
> (non-CUE) Windows XP computer. This disk was upgraded to Windows 7 in 
> ~ 2015 as part of the work required to update LabVIEW on the computer.
>
> When Rack #1 was being rebuilt this year, the computer disk was 
> updated to a Jlab-CUE based machine by the computer center. Any change 
> to the configuration or repair of the Rack #1 computer must be done by 
> the computer center.
>
> DSG has completed the installation of the NMR computers for Racks 1 
> and 2 in the HDice lab. So we will initiate a property transfer for 
> these machines to the HDice group.
>
> FYI: In the upcoming year, all Jlab Windows 7 computers (including the 
> NMR computers) must be upgraded by the computer center to Windows 10. 
> The required upgrade is detailed on the computer center website here: 
> https://cc.jlab.org/node/818
>
>
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/dsg-hdice/attachments/20180919/43cbcfd3/attachment-0002.html>