MINI-LINKEandEMicro
made through the HCC. The processor also communicates with a PC through
the Operation and Maintenance interface.
The MMU processor handles the bit error collection and communicates with
processors in the radio unit through the RCC.
See Section 6.1.2 on page 95 for details on the communication channels.
Local setup, error detection and location can be performed by the display and
switches on the MMU.
3.8.2.9 DC/DC Converter
The isolated DC/DC converter produces a stable voltage for the outdoor radio
unit and secondary voltages for the MMU electronics. The power supply is after
filtering also fur ther distributed to the SMUs and SAUs in the access module.
3.8.3 DC Supply
The primary DC supply to the MMUs is connected in parallel on the backplane
for further distributi on to all indoor units.
Each MM U supplies its own radio unit.
The MINI-LINK Cross-connect unit (MXU) is supplied separately.
Figure 40 on page 52 shows en example of how the DC supply is connected to
the indoor units.
51
AE/LZT 110 2012 R8C 2002- 03-04
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