20231115

1700-1930

Aiden and Gabriel

433c

Troubleshoot GAM - GAM motor controller

1. Set up GAM lift
2. Connect GAM to GAM motor controller
   • Connected 14-pin AMP connector to GAM first
3. Navigate to telescope > GAM control > filter wheels
4. Tried to move the on-axis filter wheel to pos. 3
   • Didn't move anything
5. Connected 37-AMP connector
   • The translating stage motor started spinning without stopping
   • Stopped by pressing the reset button on the side of the GAM motor controller
6. Moved South filter wheel to 3, SUCCESS
7. Moved South filter wheel to 6, SUCCESS
8. Moved South filter wheel back to 3, SUCCESS, and rotated in opposite direction
9. Moved on axis filter wheel to 3, began to move but wouldn't stop due to missing belt
   • Stopped by pressing reset button on side of GAM motor controller
10. Moved to the translating stage tab
11. Rotating mirror to west. Success.
    • Rotating the mirror works in all directions. Sometimes it gets stuck, can't consistently replicate it, but it corrects itself on the second try. Rotating the mirror by hand shows that it experiences more resistance at some parts of the rotation.
12. Tried testing the translating stage, moved between stow and on-axis pos. repeatedly, FAILED
    • This is probably due to the limit switches-relays not working correctly on the translating stage. This is because the motor worked randomly in the beginning.
13. The south filter wheel, on-axis filter wheel, translating stage, mirror, all seem to work. The translating stage motor rotates slightly when clicking “Update GAM status”, along with all the rest of the motors. This can be replicated by pressing the reset switch on the side of the GAM motor controller and then clicking the update gam status button on DFMTCS again.

• Fit the belt on the on-axis filter wheel.
• Troubleshoot the translating stage motor some more, after checking the connection its corresponding limit switches and connect it to the worm gear attached to the rotating mirror.
• Check the rotating mirror for anything that could cause a resistance to rotations, maybe dust idk.
• After all of this is resolved, we can mount the GAM.

DFMTCS crashed at some point when pressing “Update GAM status”. The telescope was tilted to the south when this happened, so DFMTCS thought Zenith was to the south. This is going to result in some trouble with calibrating pointing next time we observe. Sorry!!!!!!!

great

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