User's Manual
AirHarmony-4000 (External Cavity Filters) Installation Guide
UGD-D01019 Airspan Commercial and Internal Use 49
2. Lift the replacement External Filters’ set into position on the Sun-Shield so the slots on the
sides align with the pan head screws projecting from the Sun-Shield and tighten.
3. Loosen the four (4) screws on the filter cover that lock the filter cover in place on the
External Filters’ set.
4. Pull up slightly on the filter cover bottom (to release the cover a bit) and pull the cover up
and back to open the cover.
5. Pull outward on the filter cover to pull it free and swing the filter cover down away from
the cavity filters and open the cover completely.
6. Slide the filter to align it up with its RF connector and fit together, then tighten the
connector.
7. Next tighten the four (4) screws which fasten the filter to the filter bridge.
8. Slide the second filter to align it with its RF connector and fit together, then tighten the
connector.
Caution: Take care not over tighten the RF connector. The connector nut should be
tightened to a nominal torque of no more than 2.0 Nm (1.47 lb-ft).
9. Tighten the four (4) screws which fasten the second filter to the filter bridge.
10. Tighten the four (4) screws which fasten the filter bridge to the Sun-Shield.
Airspan recommends weather-proofing the RF connections.
Note: Weather-proofing of all the connections is recommended. This is done with a layer
of self-amalgamating tape followed by an over layer of PVC tape. The weather-proofing
is best done at this stage to give easier access to the connections.
11. Swing the filters’ cover up till slots are aligned with the two (2) upper bolts on the filter
bridge.
12. Once in place tighten all four (4) screws to lock the filters’ cover in place.