User's Manual

Table Of Contents
MBSC0800-040-RU
MBSC0800-040-RU July 02, 2014
Page 27
Figure 20 Grounded Host Unit
4. Tighten the screw, making sure the cable is securely connected before moving to the next phase of
the installation.
4.3.2.2 Coaxial Cable Connections
The RF interface between the Host Unit and the BTS (or POI) is supported through Tx/Rx QMA female
connectors mounted on the Host Unit front panel.
The Host Unit should be mounted as close as possible to the BTS to minimize RF cable losses. Use the
following steps to route and connect the simplex path coaxial cables to the Host Unit:
1. Obtain the required lengths of high performance, flexible, low loss 50Ω coaxial communication
cable for all coaxial connections.
2. Route the RF Tx and Rx path coaxial cables between the Host Unit and BTS interface and cut to
the required length.
3. Terminate the cable with a QMA male connector.
4. Connect the Tx and Rx cables from the BTS to the Tx and Rx connectors on the BIU front panel
corresponding to the frequency band (e.g. Tx 700, Tx 850, Tx1900, Tx 2100 or Tx2600).