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AirHarmony-4000 DC (Integrated External Duplexers) Installation Guide
UGD-D01123
Airspan Commercial and Internal Use
35
5
AirHarmony-4000 DC INT EXT Connections
This section describes Grounding procedure, cable preparation and connections and external
antenna assembly.
5.1
Grounding
The AirHarmony-4000 DC INT EXT 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. The grounding screw (M6
x 16) is pre-installed during assembly.
Figure 18: Grounding
The cable should be grounded and bonded according to international or local standards.
5.2
Remote Antenna Assembly
The AirHarmony-4000 DC INT EXT unit is be used with a remotely attached antenna.
Fo i stallatio of a e otel ou ted a te a follo the a te a a ufa tu e ’s i st u tio s a d
connect the antenna to the AirHarmony-4000
I teg ated E te al Duple e s’ RF o e to s fe ale
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 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.