User's Manual

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d) If there is more than one IRCU need to be connect, daisy-chained cascade method can be
used as show in Figure 4-4.
Figure 4-4 Multiple IRCU Daisy-Chain Cascade Schematic Diagram
**Note: The control cables and IRCU connectors at both ends were Male and Female connector.
IRCU male connector used to receive Input Signal and connect with female connector of control
cables; IRCU female connector used to transmit output signal and cascade in series to another IRCU
using male cable connector. Control cables from PCU only can be connect to the male connector of
IRCU.
e) Water proof: Firstly wrap three layers of waterproof tape, then wrap three layers of
insulating tape, fastened with cable ties at both ends.
5.2.3 Connection between IRCU, PCU and Antenna Systems
Connection between IRCU, PCU and antenna system connections are shown in Figure 5. There
are three connections, namely:
Figure 5(a): IRCU directly connected with the PCU via the control cable;
Figure 5(b): IRCU connected with antenna system terminal SBT (Smart Bias-T), PCU and the
base station apparatus connected to the end of SBT, the control signal transmitted thru the
RF feeder.
Figure 5(c): IRCU connected with AISG interface enable TMA, PCU and the base station
apparatus connected to the end of SBT, the control signal transmitted thru the RF feeder.
PCU-H002
Antenna
PCU
Cable
AISG IN
AISG OUT
Antenna
AISG IN
AISG OUT
Antenna
AISG IN AISG OUT
Daisy Chain
Connection
Daisy Chain
Connection