Procedure to Reset Varian NMR Console

If communication between the computer and console is lost and the computer is unresponsive to commands:

  1. Open a Linux terminal (Right click in Desktop and select Open Terminal). Inside the terminal window, type: su acqproc

    A message says Stopping Acquisition communication

  2. Go to the NMR console to the right (left for NMR500) of the computer. Open the left side door of the console. In the middle section, just below the PTS labels, in the upper left corner you should see two small buttons (there is a small hand-written red sticker next to them, see pictures below). One is labeled Abort and the other Reset

    Firmly press the Abort button once.

    Firmly press the Reset button once.

    A red light should come on right after you press the Reset button.

  3. Go back to the computer. Inside the terminal window, type:

    su acqproc

    A message says Starting Acquisition comminication

  4. Watch the Spin and channel lights on the VT display to cycle. It takes about 1-2 minutes.

    5. After the reboot, the Acquisition status window turns from "Inactive" to "Idle"

  5. In the vnmrJ command area, type:

    su

    and proceed with your experiments.

Console with left cabinet open

console

 ABORT and RESET buttons inside circled area of left cabinet

reset button

H. Zhou updated Sept 2011