User's Manual

Main Hub Rear Panel
3-8 InterReach Unison Installation, Operation, and Reference Manual
CONFIDENTIAL D-620003-0-20 Rev J
3.2.1 Main Hub Rear Panel Connectors
3.2.1.1 9-pin D-sub Connector
The 9-pin D-sub connector (labeled DIAGNOSTIC 1) provides contacts for fault and
warning system alarm monitoring.
Table 3-3 lists the function of each pin on the 9-pin D-sub connector.
Table 3-3 9-pin D-sub Connector Functions
This interface can both generate contact alarms and sense a single external alarm con-
tact.
3.2.1.2 N-type Female Connectors
There are two N-type female connectors on the rear panel of the Main Hub:
• The
DOWNLINK connector receives downlink RF signals from a repeater, local
base station, or MetroReach Focus system.
• The
UPLINK connector transmits uplink RF signals to a repeater, local base sta-
tion, or MetroReach Focus system.
CAUTION:The UPLINK and DOWNLINK ports cannot handle a DC power
feed from the base station. If DC power is present, a DC block must be used
or the hub may be damaged.
Pin Function
1 Alarm Input Ground
2 Reserved
3 Reserved
4 Warning Contact (positive connection)
5 Warning Contact (negative connection)
6 DC Ground (common)
7 Fault Contact (positive connection)
8 Alarm Input
9 Fault Contact (negative connection)