User's Manual

AirHarmony-4000 (External Cavity Filters) Installation Guide
UGD-D01019 Airspan Commercial and Internal Use 38
5 AirHarmony-4000 Connections
This section describes Grounding procedure, cable preparation and connections and external
antenna assembly.
5.1 Grounding
The AirHarmony-4000 requires a secure ground connection. The ground cable should be connected
with a grounding screw fitted with a flat washer and lock washer to the bottom of the chassis clearly
marked with the universal ground symbol as shown below.
Figure 30: Grounding
The cable should be grounded and bonded according to international or local standards.
5.2 Remote Antenna Assembly
The AirHarmony-4000 unit is be used with a remotely attached antenna.
For installation of a remotely mounted antenna follow the antenna manufacturer’s instructions and
connect the antenna to the AirHarmony-4000 external filter RF connectors using the appropriate
cables. (N-type Heliax RF cables, ordered separately).
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). RF failures can result
when the RF connector is over-tightened.
5.2.1 Connecting RF Jumper Cables to External Antenna
The following describes how to connect the antenna cables to the cavity filters.