User's Manual

AirHarmony-4400 (External Cavity Filters) Installation Guide
UGD-D01186 Airspan Commercial and Internal Use 44
5 AirHarmony-4400 Connections
This section describes Grounding procedure, cable preparation and connections and external
antenna assembly.
5.1 Grounding
The AirHarmony-4400 requires a secure ground connection. The ground cable should be connected
with the grounding screw (M6x16) fitted with a flat washer and lock washer (supplied) to the bottom
of the chassis clearly marked with the universal ground symbol as shown below. The grounding
screw (M6 x 16) is pre-installed during assembly.
Figure 36: Grounding
The cable should be grounded and bonded according to international or local standards.
5.2 Remote Antenna Assembly
The AirHarmony-4400 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-4400 external filter RF connectors (female DIN 4.1/9.5
connector) using the appropriate cables with a male DIN 4.1/9.5 connector.
Caution: Take care not over tighten the RF connector. The connector nut should be
tightened to a nominal torque of no more than 10.0 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.
1. Attach, connect and secure the RF cables, with a DIN 4.1/9.5 connector(s) (Male -
internal thread) coming from the external antenna and the two (2) RF connections on