Alcatel 9900 User Manual page 50

4. Carry out alignment with respect to the strongest signal. To do this, either:
– observe the maximum field level on the RIT tool indicator (the field maximum corresponds to the
maximum deviation of the needle on the field gauge),
– or, evaluate the maximum field level using the audio headset connected to the service kit cable (field
minimum corresponds to a low frequency audio signal; field maximum corresponds to a high frequency
audio signal).
Potentiometer
When the needle reaches the end point, adjust the potentiometer to re–center it.
Figure 39 – Adjustment procedure using the RIT tool potentiometer
5. Using the Allen key, re–tighten the "bearing" screws (ref. 1, Figure 38).
6. Using the Allen key, loosen the "elevation" screws (ref. 2, Figure 38).
7. Adjust the RT unit by sweeping vertically in either direction until the maximum receive level is found. Use
the same methods presented in point 3 above.
8. Using the Allen key, re–tighten the "elevation" screws (ref. 2, Figure 38).
9. Tighten all the mechanical assembly screws, taking care not to mis–align the RT unit assembly.
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Figure 38 – Adjustment screws
These adjustments are repeatable.
Issue 02 - January 04, 2000
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Potentiometer
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