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nmr_probes [2014/12/03 18:35]
pereira [Description]
nmr_probes [2019/01/31 12:27]
pereira [Troubleshooting]
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 ===== Description ===== ===== Description =====
-The NMR running programs for both the S800 analysis line and spectrograph dipoles can be started by selecting the NMR icons (for the analysis line and the spectrograph) in the operation applications of the desktop  [[Software#u6pc5 (data U6)|u6pc5]]. Sometimes the initialization of these applications fail. In that case check section [[nmr probes#troubleshooting|"Troubleshooting"]] below). The picture below shows the NMR panel for the S800 Analysis Line GUI as an example. The top (yellow) panel shows the data relevant to the NMR module, the middle (pink) the digitized signal from the oscilloscope and the bottom (blue) the status and measurements for the dipoles. +The NMR running programs for both the S800 analysis line and spectrograph dipoles can be started from the desktop of computer [[Software#u6pc5 (data U6)|u6pc5]], by clicking in the icons **NMR Analysis** for the analysis line dipoles, and **NMR Spectrograph** for the spectrograph magnets. Alternatively, the NMR control programs can be run from a Linux session by typing ''/usr/bin/wish analysis.tcl'' in directory **/user/s800/Documents/Run/analysis**, for the analysis line, and ''/usr/bin.wish spectrograph_sjw.tcl'' in directory **/user/s800/Documents/Run/spectrograph**, for the spectrograph. 
 + 
 +Sometimes the initialization of these applications fail. In that case check section [[nmr probes#troubleshooting|"Troubleshooting"]] below). The picture below shows the NMR panel for the S800 Analysis Line GUI as an example. The top (yellow) panel shows the data relevant to the NMR module, the middle (pink) the digitized signal from the oscilloscope and the bottom (blue) the status and measurements for the dipoles. 
  
 {{:wiki:NMR-control.jpg?350|NMR Control panel for the Analysis line dipoles.}} {{:wiki:NMR-control.jpg?350|NMR Control panel for the Analysis line dipoles.}}
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 Any of these connections can eventually be broken, and the program tries to catch the failures and report them to the user. However there are cases when the program "hangs" and need to be manually aborted. The little heart displayed at the top left corner of the oscilloscope display indicates the liveliness of the EPICS loop, as well as the liveliness of the program itself. If the heart stops beating for more than 10 seconds, it probably means the program is frozen. To restart it, simply click on the program's icon again, which will kill the existing process and start a new one.  Any of these connections can eventually be broken, and the program tries to catch the failures and report them to the user. However there are cases when the program "hangs" and need to be manually aborted. The little heart displayed at the top left corner of the oscilloscope display indicates the liveliness of the EPICS loop, as well as the liveliness of the program itself. If the heart stops beating for more than 10 seconds, it probably means the program is frozen. To restart it, simply click on the program's icon again, which will kill the existing process and start a new one. 
  
-In case nothing happens after clicking on the icon, the connection to the NMR module is probably locked and needs to be freed. To free it, type the following from any shell window (actual typing show in this font ): +In case nothing happens after clicking on the icon, the connection to the NMR module is probably locked and needs to be freed. To free it, type the following from any shell window (actual typing show in **bold** font): 
  
-  - **telnet 35.9.56.212** +  - **telnet s800ts.nscl.msu.edu** 
   - Enter any **username**    - Enter any **username** 
   - **set priv **     - **set priv **  
-  - The system will ask you the password (ask the S800 device physicist+  - The system will ask you the password ("system"
   - **unattach port x** (where x=1 for the analysis line and x=2 for the spectrograph)    - **unattach port x** (where x=1 for the analysis line and x=2 for the spectrograph) 
   - **logout**    - **logout** 
   - Click again on the starting icon and the program should start.    - Click again on the starting icon and the program should start. 
  
nmr_probes.txt · Last modified: 2024/01/29 10:51 by swartzj