To connect the ADU, ACU and GMU
3-26 Chapter 3: Installation 99-145912-A
3.6 To connect the ADU, ACU and GMU
The following figure shows how to connect the ADU, ACU and the
GMU.
1. Connect the antenna cable to Antenna at the ACU and the
antenna.
2. Connect Rx Out at the ACU to Rx In at the GMU with the supplied
cable (75 Ohm coax, F-F, 1 m).
3. Connect Tx In at the ACU to Tx Out at the GMU with the supplied
cable (75 Ohm coax, F-F, 1 m).
4. Connect RS-232 on the ACU to RS-232 (right) at the GMU.
5. Connect RS-422 on the ACU to RS-422 at the GMU.
6. Connect a PC at the LAN3 interface (Service port) of the ACU for
access to the web interface for configuration.
7. Connect LAN1 at the ACU to the upper left RJ45 connector at the
GMU.
Figure 3-25: Connection between ADU, ACU and GMU
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ADU
Service port
for control PC
AC power
DC power
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