Background

DEIMOS is typically rotated by using the handpaddle that sends rotation commands through roto. If roto is inoperative, you can use the following emergency procedure to rotate DEIMOS.

CAUTION: as explained below, this procedure involves bypassing the normal rotator limit mechanism and could damage the rotator.

Procedure

  1. Open power panel just below glycol panel.
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  2. Toggle bypass switch to BYPASS.
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  3. Rotate the instrument using either the F (forward) or the R (reverse) pushbuttons. CAUTION: The bypass switch bypasses the limit switches. The rotator could be damaged if you rotate beyond the limits. Watch the cable wrap to determine that it the position is within safe operating range.
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  4. When done rotating, toggle the bypass switch back to NORMAL to restore computer control of the rotator.
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