User Manual

Cabinet descriptionNortel Networks Confidential 1–161
S8000/S8002/S8006 BTS Reference Manual
1.4.2 S8000 Indoor BTS
Figure 1–122 shows the dc power supply distribution. Two filters protect the dc
distribution input against conducted emission. The dc power supply feeds the dc
compartment where four outputs come out to the following equipment groups:
the eight power amplifiers and the two F–type converters, through the power
amplifier interconnection module
the three fans, through the fan interconnection module
the eight DRXs (or e–DRXs), through the DRX interconnection module
the BCF or CBCF
the ALCO or RECAL board
The dc compartment houses four breakers that allow to disconnect the powering of
these equipment groups.
The dc distribution for each group uses three cables:
+0 V dc
–48 V dc
ground