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 TM 11-6625-2976-40
2-11. VOR MODE ADJUSTMENT. (CONT)
PROCEDURE (CONT)
6. Set oscilloscope controls as follows:
TIME BASE: 0.1 ms/dlv
VERT: 2v/div
SYNC: INT
7. Connect oscilloscope to test set as indicated in the following diagram.
NOTE
Frequency counter remains connected to J12.
VOR 30 REF DELETE switch remains depressed until step 15.
8. Adjust R80, if needed, to produce a symmetrical square wave with base at zero v and peak
at +6 v.
9. Readjust R57 until frequency counter displays 9960 Hz .004.
10. Remove jumper form J13.
2-48
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