User's Manual

PCBA Connections Nexus FT
2-6 044-05251 Rev B
LNA
Figure 2-6 shows the front of the LNA and Table 2-6 lists the connections.
Figure 2-6 LNA
Table 2-6 LNA Connections
FON
Figure 2-7 shows the locations of the connectors on the FON and Table 2-7 lists the port numbers, connector
types, and port usage.
Figure 2-7 FON Connector Locations
LNA Port Connected to
OUT LOW IN on the LNA/UL in the cover, if equipped
IN LO on the service DPX duplex filter
ATT +7V P23 on the DIA PCBA
OUT1 P2101 on the WBA PCBA
OUT2 Diversity LNA connected to P3101 on WBA PCBA
Table 2-7 FON Connectors
Port Description
P101 SMA, electrical RF input port (to the optical TX port)
P102 SMA, electrical RF output port (from the optical RX port)
P103 SMA, electrical RF output port (15dB below the P102 port)
RX DIN/APC, optical input port (to the P102 and P103 RF ports)
TX DIN/APC, optical output port (from the P101 RF port)
P104 Used only for development and debugging
P105 4-pin male, door LED indicators. Used for the yellow and red LED indicators located
on t
he front cabinet door
P1
06 9-pin D-sub female, RS-232 used for local PC communication
P108/116 6-pin male, parallel connected power ports for the FON
P109 7-pin male, used for external alarm sensors
P117