COBHAM SEA TEL 9711IMA-70, Installation Manual

Page: 102 / 178

Maintenance 9711IMA-70
15-14
13. If not, loosen the mounting nut on the
underside of the bracket and rotate the
body of the potentiometer slightly while
displaying the value. Continue rotating
the body of the potentiometer until
reading is within 1190 +/- 30. Tighten
the nut while holding the body of the
potentiometer firmly in place and verify
that the displayed value is acceptable.
Repeat until acceptable reading is
obtained.
14. Record the four digit value that is
displayed after the “U” as your CCW
value. This value will be used in
calculations below.
15. Remove your 2mm Allen wrench from
the alignment holes.
NOTE: The CW & CCW alignment holes in the
collar under the driven sprocket are 180 degrees
apart and should be scribe marked on the body of
the OMT, above the driven sprocket.
16. Rotate the linear section of the feed CW
by hand to align the alignment hole in the
driven sprocket with the CW hole in the
collar underneath the driven sprocket.
17. Ensure both holes are aligned and insert
your 2mm Allen wrench into the
alignment holes to prevent the feed from
rotating.
18. In ProgTerm, type “u”. The result should
be formatted as shown to the right. Pot
measurements for the linear section of
the feed are the four digit “YYYY” value
following the “U”.
19. Record the 4 digit value that is displayed
after the “U” as your CW value. This
value (typically approximately 2337) will
be used in calculations below.
GXXXXUYYYYVZZZZ<garbage character>
20. Use the following formula to calculate
the scale value (round to nearest integer).
21. Verify Scale =
90 +/- 1
NOTE: If the Scale calculated falls outside of the
tolerance, repeat step 13, ensuring the CCW value
recorded in step 12 is 1190 +/- 30.
22. Record this value as the Scale value.
23. Use the following formula to calculate
the offset value (round to the neatest
integer).
24. Verify offset is 30 +/-5
25. Record this value as the Offset value.
EAR Controlled - ECCN EAR99