User's Manual

4. Commissioning

Page 26

7.Manual MF0200A0A ION-U_EU H 19P2_uc_08-July-13.docx

User

’

s Manual for ION

The selection of cable and antenna is an important consideration. On the one hand, a

cable with higher loss is less expensive but, on the other hand, it impairs

performance.

Use an appropriate torque wrench to tighten the 7/16 DIN-type (1 ¼ -inch

opening) antenna connectors to a coupling torque of 25 N-m / 19 ft lb.

Torque wrench item no. 244377, available from the CommScope e-

catalog, is recommended. Do NOT use your hands or any other tool (e. g.

a pair of pliers)! This might cause damage to the connector and lead to a

malfunction of the Remote Unit or increased PIM.

To minimize passive inter-modulation (PIM) distortion, attention must be

paid to the physical condition of the connector junctions. Do not use

connectors that show signs of corrosion on the metal surface. Prevent

the ingress of water into the connector. Attach and torque the

connectors properly.

An example of the antenna port connections for a Remote Unit paired with an

Extension Unit using an optional crossband coupler is shown below.

figure 4-8 Antenna port to CBC

wiring

1. Connect an RF cable from the ANT

port of the EU to the PCS input of the

CBC.

2. Connect an RF cable from the ANT

port of the RU to the AWS input of the

CBC

3. Route the antenna cable from the

antenna or splitter to the CBC.

4. Cut the cable to length and terminate

the cable with a 7/16 DIN type male

connector.

5. Using an appropriate torque wrench,

connect the antenna cable to the

Common port of the CBC.

CBC

Cables

COM: Connect to antenna

or antenna network