Metadata
Title
Yale University
Category
general
UUID
0b8dcb69f60148238739416464e0c17c
Source URL
https://cbic.yale.edu/instruments/troubleshooting/vnmrj-stopped-working
Parent URL
https://cbic.yale.edu/instruments/troubleshooting
Crawl Time
2026-03-10T04:54:51+00:00
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Yale University

Source: https://cbic.yale.edu/instruments/troubleshooting/vnmrj-stopped-working Parent: https://cbic.yale.edu/instruments/troubleshooting

Vnmrj stopped working

Vnmrj fails occasionally. There are different causes:

1.  VnmrJ is hung up on some internal process.  Sometimes, a long band with alternative blue/white colors under the command line appears.

Please exit Vnmrj:  go to  “File” -> “Exit Vnmrj”. If Vnmrj is frozen, open a Linux terminal and type ‘killall -9 java’ and the Vnmrj will disappear. Then restart VnmrJ by double click the VnmrJ icon.

  1. The communication between the console and the PC was interrupted.

To restore communication, open a Linux terminal, type ‘su acqproc’ and hit “return”.

Open the door of the console and press the reset button of the right-most board on the console.

Wait a minute or two until the lights on the right-most board scroll up and down continuously. Type ‘su acqproc’ and hit “return” again, wait until “Idle” appears in the small window at the bottom of the VnmrJ frame.