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NORMAL STARTUP PROCEDURE IN DETAIL

Normally the computer is marked off when not in use so a few instructions are needed to get it to take control of the telescope. Proceed as follows:

  1. Ensure that the telescope power and oil pump are switched on, and that the oil pressure warning light and Emergency Stop reset buttons are out.
  2. Hit the RETURN button on the CST. If an asterisk response is obtained then all is potentially well and so proceed to step (3). If there is no response then a slight diversion to Section 4.3 is required - so follow instructions therein. If there is a response
  3. Type D D <cr>.

    Look down list of devices and find FX16:. If it is OFF, type

    MA FX16:,ON,,CD=ALL

    and wait for the one line response, then type

    GO JKT

    and wait for the message LOADJKT: END OF TASK 0. If it says FX16:SYS type

    GO JKT and wait for message, either LOADJKT:END OF TASK 0 or CONTROL SYSTEM is already running.

    If this is the first startup after an end-change or reversing the telescope then GO JKT,F15E,COMPILE or F15W or F8E as appropriate.

  4. What should happen on the USER screen is that a display saying

    JACOBUS KAPTEYN TELESCOPE

    should appear followed by the user interface UI> prompt. You can then zeroset, input source positions, initialise T/S parameters or any other User Interface Command.

  5. Occasionally the user interface terminal hangs up and you will be unable to get a response from it. First, check the system terminal. It may say that Task USER (or any other named task) has failed with an error. In this case type in the following (substituting the task name as appropriate)

    RESTART USER <cr>

    The user interface (or other task) should now restart. If it doesn't then try again.

  6. Ensure that the speeds on the engineering panel are set to the recommended values. Position the telescope within about a degree of the zenith. Then at the user-interface type Z(EROSET) and follow the prompts.
  7. Switch the control console from engineering (manual) mode to computer control by turning the key labelled ENGINEERING FACILITY clockwise. It should spring back and the green COMP half of the associated button should light up.
  8. Use HA/S, HA/G and HA/I to select required set/guide/increment rates (see Section 7). Press SET, GUIDE and INCREMENT on the System Control Panel to enable these operations. If you omit this step it isn't disastrous as the control program has the sensible defaults 30, 3 arcsec/sec and 30 arcsec.
  9. If the telescope is now creeping, set a position on the USER terminal near the telescope's current position and press STOP and SOURCE. The telescope should now track on a fixed RA and Dec position. If you press STOP it should stop completely.

Point to note.

To switch back to engineering mode, just press the illuminated switch don't try to turn the key anticlockwise!

The telescope is now totally under the influence of commands entered at the USER terminal or the set/guide buttons either on the control console or the telescope handset.


next up previous contents
Next: HOW TO REVERSE Up: THE PE 3220 Previous: HOW THE SYSTEM


Tue Aug 5 05:37:08 MET DST 1997