Nortel DCT1900 Technical Product Manual page 263

Base Station Power Supplied to a Maximum of 7 CLUs/SLUs via the PW–EXT Input on the
MCCB
This requires a power supply with a capacity of greater than 300W, such as a PBX power supply.
Figures 19–15A & 19-15B give a schematic diagram of this configuration. Figure 19–16 gives the
cable diagram of this configuration.
ext
-48V
Fig. 19 -15A - Schematic Diagram of Powering Modular Cabinet and 7 CLUs/SLUs with an
ext
-48V
ext
-48V
Fig. 19-15B Schematic Diagram of Powering the Modular Cabinet and 7 CLUs/SLUs with two
Install-DCT1900/R8/mw
© 2000-2005
B
A
External Power Supply
B
A
Backplane
separate -48V External Power Supply
Technical Product Manual - DCT1900
Installation Instructions, Modular Cabinet – Power Cabling
PW-
EXT
PW-BP
Backplane
MCCB
Internal
Modular Cabinet
PW-
EXT
PW-BP
Internal
Modular Cabinet
CLU/
SLU
CLU/
SLU
19-13