Service Manual

GSM-205-423
Connections to RF modules
31st Oct 01
Installation & Configuration: Horizon macro indoor
68P02902W08-B
CONTROLLED INTRODUCTION
Inst. 2–23
Types of RF
connector
Table 2-2 lists the RF module connectors with their destinations.
Table 2-2 RF module connectors and destinations
RF module Type of connector Destination
CTU transceiver SMA Tx Block (underneath)
Tx Block SMA CTU transceiver
N-type SURF
7/16 antenna
SURF N-type Rx N-type of Tx Block
SURF/Tx block
interconnecting
cables
Table 2-3 lists cable types used for SURF/Tx block interconnections.
Table 2-3 SURF/Tx block interconnecting cables
Part number Description Use
3086225N01 34.5 cm coaxial cable terminated at
either end with straight N-type plugs.
Tx block to SURF
3086225N02 28 cm coaxial cable terminated at one
end with a straight N-type plug, and at
the other end with a right-angle N-type
plug.
Tx block to Tx
block
3086225N03 2.25 m coaxial cable terminated at
either end with straight N-type plugs.
SURF to SURF
3086225N04 2.25 m coaxial cable terminated at one
end with a straight N-type plug, and at
the other end with a right-angle N-type
plug.
Tx block to Tx
block
Unused SMA
connections
Ensure that any unused SMA inputs to DCF, DDF or HCU modules are fitted
with 50 ohm termination loads.
Torque of RF
connectors
CAUTION Care should be taken when tightening SMA connectors to
avoid damage by excess force.
For correct torque of connectors, see Installation & Configuration: GSM-205-423
Site requirements and considerations.