User's Manual

AirHarmony-4000 (Integrated Duplexers) Installation Guide
UGD-D01080 Airspan Commercial and Internal Use 31
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 18: 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 Integrated Duplexers.
1. Attach, connect and secure the RF cable between the external antenna and the
appropriate RF connection on the top of the Integrated Duplexers.
Caution: Antennas must be connected and attached before AirHarmony is powered on.
Caution: Power down AirHarmony prior to disconnecting antenna.