OMEGA-PRIME

Troubleshooting

From time to time it can happen that a process hangs. Mostly you can simply kill the hanging process. Some commands are prepared for this:



    Type these commands in the interpreter window where you have started the GUI.

Problem: You can't start the GUI
Solution: Type cleanup before you start the GUI. This program deletes all remaining software parts from a previous session.

Problem: Data is useless (counts between 0 and 65000, randomly distributed) and the Abort button does not work.
Solution: The fibers are connected wrong. Interchange the two fibers for the data.

Problem: Anything seems to work well but there are no stars.
Solution: 1. Check to see if the TV Guider mirror is in the optical path, if it is, retract it.
                  2. Check the last button in the display window.

Problem: Message 'can't allocate info page' and you can't start the GUI
Solution: There is still a shared memory socket existing. Delete in the tmp directory the shmsocket.

Problem: Timeout from parallel interface.
Solution: Go to main screen and set Re-init ROElec. The paramateres have been initialed, so you should check the numbers of repetitions and exposures time. If the problem still remains then, quit the instrument gui, and type cleanup in the xterm. After that, rebbot epics and restart the GUI.

Problem: Telescope does not respond.
Solution: Check hydraulic and main drivers are on.

Problem: Telescope is moving.
Solution: This message appears  sometimes when you try to send coordinates from the OPRIME telescope gui. Move the telescope with the paddle and try again.

Problem: If the TELE button from the image DISPLAY works badly.
Solution: Check telescope is working in AD coordinates.

Problem: Serial line is busy.
Solution: This happens when you set an invalid option in the system setup gui. Check the parameters in this gui.

Problem: Negative counts on the DISPLAY.
Solution: This is due to saturation. Decrease the integration time. It could be a fail in the electronic. Do a Re-init ROElec in the file menu.

Problem: No counts on the display or a quadrant.
Solution: Maybe some of the pre-amplifiers are damaged. You should change the upper electronic.

Problem: All the quadrants seem to be mixed ones each others.
Solution: Go to main screen and set Re-init ROElec in the file menu.  The paramateres have been initialed, so you should check the numbers of repetitions and exposures time. If the problem still remains then, quit the instrument, and type cleanup . After that, rebbot epics and restart the GUI.

Problem: Water condensation.
Solution: If you see on the display an image like this, you have water condensation on the entrace window above the chip. Check that there is nitrogen blowing on the entrance window.


 
 
 

Click here to return to the Omega-Prime Home Page



Comments and suggestions :   Ana Guijarro