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chara:trouble_shooting [2022/01/21 17:55]
charaobs 		chara:trouble_shooting [2022/01/21 19:07]
charaobs
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   * Check the instrument alignment. Is flux getting through to the detector? How long has it been since the last NIRO camera alignment? Classic and CLIMB programs can run for about an hour before the light will drift from the central pixel. Use the Classic or CLIMB gui to view the light on the pixels by clicking the PICTURE tab and then the PIXEL AREA button. Turn the camera off with the STOP button. Is the right dither power turned on? CLIMB 1 and Classic use different dithers. If Classic or CLIMB fringes are found in a scan, but not when in recording mode, the dither powers are likely not on. Are the camera settings correct for the seeing conditions and flux levels?   * Check the instrument alignment. Is flux getting through to the detector? How long has it been since the last NIRO camera alignment? Classic and CLIMB programs can run for about an hour before the light will drift from the central pixel. Use the Classic or CLIMB gui to view the light on the pixels by clicking the PICTURE tab and then the PIXEL AREA button. Turn the camera off with the STOP button. Is the right dither power turned on? CLIMB 1 and Classic use different dithers. If Classic or CLIMB fringes are found in a scan, but not when in recording mode, the dither powers are likely not on. Are the camera settings correct for the seeing conditions and flux levels?
 +
 +===== The new OPLE system =====
 +
 +With the implementation of the new ople system which replaced the VME in Fall of 2021, new troubleshooting issues have arisen.  Since there are now 6 new ople computers to run the carts for each scope individually, many issues will be specific to one computer or telescope and not to the system as a whole.  Restarting the VME is now a thing of the past.
 +
 +The traditional ople server will still be used to communicate with each new ople computer, identified as OPLE 1 to OPLE 6.  When the communications are good, each active cart will be displayed in the ople server or ople gui status tab as before.  At times, an ople computer can lose communications or a server can crash and the server or comms needs to be restarted.
 +
 +If a cart cannot be started, stopped or otherwise commanded, look to the OPLESystem gui to see if a green indicator has turned red.  A message will also often pop up on the ople gui saying the command could not be sent. This may require a simple start command to restart the server or a reboot of the computer to get it back to yellow and then a start to get it back to green.  Do either of these steps with a right click of the red button and then select start or reboot.  After a reboot, select start to load the servers after the indicator has turned yellow. When this is done, the ople server will need to be connected to the newly restarted server.  Type "oo" into the ople server to open ople comms with the new ople server.  It should now reappear on the ople server display and say System Ready to indicate comms are restored.
 +
 +Some times a cart is stopped and cannot be commanded.  If the cart has gone to the front hard or back hard switch, it will not be usable until it is moved from the switch and the Ople Controller box is reset.  There are 6 silver boxes for these controllers with two green LED's for the front and back switches and two red LED's for the back hard and front hard switches.  If a red LED is lit, there will be an error displayed on the message window and the cart is disabled.  The cart will need to be moved ofo the switch and then the box can be reset with the RESET button on the front.  The error display will go away and the red LED will be off.  The cart is now controllable.
  
 ===== Restarting Servers ===== ===== Restarting Servers =====
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 You always want to use the lowest gain that still allows the scope to work as best as possible. If the tiptilt tells you the scope is oscillating slowly, the gain may be too low. If it is oscillating quickly it may be too high. You always want to use the lowest gain that still allows the scope to work as best as possible. If the tiptilt tells you the scope is oscillating slowly, the gain may be too low. If it is oscillating quickly it may be too high.
  
-The usual values for slewing gains are 4-7 and tracking gains are 7-10.  Note that these values may change as the temperatures change rapidly. Gains are usually higher when cold and lower when warm.  Be sure to set mode back to AUTO if changing the gains left it in Slewing or Tracking mode.+The usual values for slewing gains are 4-7 and tracking gains are 7-10. Note that these values may change as the temperatures change rapidly. Gains are usually higher when cold and lower when warm. Be sure to set mode back to AUTO if changing the gains left it in Slewing or Tracking mode.
  
 ==== How to Adjust CPUMotor Gains ==== ==== How to Adjust CPUMotor Gains ====
chara/trouble_shooting.txt ยท Last modified: 2024/08/31 02:15 by charaobs

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