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Table 8. 455 kHz IF Accuracy
Figure 9. A4 board.

Calibration Procedure For Measuring Receiver Model 8902A Page Navigation
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TB 9-6625-2343-40
(10) Adjust A23R54 EFF (fig. 7) for an oscilloscope indication of PK No.1 value
recorded in (7) above.
NOTE
If A23R54 EFF doesn't have sufficient range, refer to
manufacturer's manual, page 5-9.
SAMPLER
EFFICIENCY
OFFSET
ADJUSTMENT
Figure 7. A23 board.
(11) Disconnect all external equipment from TI and connect TI sensor module to TI
CALIBRATION AM/FM OUTPUT.
(12) Press TI keys as listed in (a) through (d) below:
(a)
DATA 12.1.
(b)
DATA SPCL.
(c)
DATA 46.3.
(d)
DATA SPCL.
(13) Adjust A51C20 FREQ (fig. 8) for a TI display between 1009000 and 1011000. (R)
R12
C20
TRAPEZOID
FREQ
SYMM
FM CALIBRATOR
A51
Figure 8. A51 board.
20


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