User's Manual

38/70 Issue 01 - April 2001 - Draft 03 3CC12425AAAA TQ BJA 01
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Figure 20 – Cell radius distances
9. If antenna misalignment is not required as per «8» above, connect the test equipment as shown in
Figure 19 – Antenna misalignment with E-RIT tool (with Enhanced RIT tool) while inserting the
appropriate IGAU type value as recorded in «5» and «6» above. If antenna misalignment is required,
proceed directly to «19».
10. Ensure that the base station is transmitting a signal in the desired sector.
11. Adjust the bolts identified in Figure 15 until the X-Pol RT mounting hardware is sufficiently snug to
hold the unit on the mast, but is loose enough to allow easy rotation of the unit by hand.
12. Switch the NT on.
13. Roughly align the X-Pol RT based on the Radio Network plan.
14. Using the Enhanced RIT tool, fine align the X-Pol RT antenna to maximum field strength and record
the Enhanced RIT tool level and LED status.
15. Determine the calculated maximum received signal level (RSL) using the signal level calculator. In
comparing the measured RSL to the calculated RSL, both values should be roughly the same.
16. Tighten the pole elevation and azimuth bolts to 4.07 Nm (36 in-lb) torque, and the vertical angle bolts
to 10.85 Nm (8 ft-lb) torque.
17. Verify the level measurement using the Enhanced RIT tool to ensure that the X-Pol RT is still aligned
to provide the maximum level. If this level has changed, repeat the maximum alignment procedure.
18. Switch the NT off, disconnect the test equipment and reconnect the IF cable to the NT. Switch the
NT on.
19. If antenna misalignment is possibly required as per «8» above, connect the test equipment as shown
in figure 16 (with spectrum analyzer) while inserting the appropriate IGAU type and value as
recorded in «5» and «6» above.
20. Ensure that the base station is transmitting a signal in the desired sector.
21. Adjust the bolts identified in figure 15 until the X-Pol RT mounting hardware is sufficiently snug to
hold the unit on the mast, but is loose enough to allow easy rotation of the unit by hand.
22. Switch the NT on.
23. Roughly align the TS based on the Radio Network plan.
24. Determine the calculated maximum received signal level (RSL) using the signal level calculator.
25. Determine whether the desired sector configuration is a vertical X-Pol RBS Tx/X-Pol RBS Rx
configuration or a horizontal
1
X-Pol RBS Tx/X-Pol RBS Rx configuration.
26. If horizontal, proceed to «32».
Maximum cell radius
Transition radius
100 m (328 ft)
BS antenna
BS cell