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7-7
D-620003-0-20 Rev J
CONFIDENTIAL
Preparing for System Installation
Attenuator
Installed between the circulator and the Main Hub downlink port to prevent
overload. Optionally, it may be installed between the uplink port and the circula-
tor
Circulator or Duplexer
Installed between the repeater and the Main Hub uplink and downlink ports
Base Station-to-Unison Configuration
Base Station
Verify RF power (refer to the tables in Section 6.1 on page 6-3); N-male to
N-male coaxial cable; installed, inspected
Attenuator
Attenuation may be required to achieve the desired RF output at the RAU and
the desired uplink noise floor level
Circulator or Duplexer
When using a duplex BTS: Installed between the BTS and the Main Hub uplink
and downlink ports. Not used with a simplex BTS
** For Japan, see separate addendum -
Japan Specification Document -
for power cord use.
Connecting LGCell Main Hub(s) to a Unison Main Hub
5-port Alarm Daisy-Chain Cable
(PN 4024-3)
For normally closed (NC) contact alarm monitoring: connecting 2 to 21 LGCell
Main Hubs to a Unison Main Hub
If connecting LGCell to Unison, the Alarm Sense Adapter Cable is required to
connect the daisy-chain cable to Unison
Do not combine LGCell Main Hubs with Unison Main Hubs in the same daisy
chain
Alarm Sense Adapter Cable
(PN 4024-3)
Use with 5-port Alarm Daisy-Chain Cable to connect up to 21 LGCell Main
Hubs to a Unison Main Hub
Also, use this cable to connect a single LGCell Main Hub to a Unison Main Hub
Connecting Multiple Unison Main Hubs Together
5-port Alarm Daisy-Chain Cable
(PN 4024-3)
For normally closed (NC) contact alarm monitoring of fault and warning alarms.
Use to feed the alarms from multiple Unison Main Hubs into a BTS or
MetroReach Focus
Do not combine Unison Main Hubs with LGCell Main Hubs in the same chain.
Cabling
Coaxial: repeater or base station to
Main Hub
Coax approved; N-type male connectors
Coaxial: RAU to passive antennas
Use low-loss cable; SMA male connector; typical 1 m (3.3 ft) using RG142
coaxial cable
Table 7-2
Installation Checklist (continued)
3
Installation Requirement
Consideration
