Nortel DCT1900 Technical Product Manual page 256

Technical Product Manual - DCT1900
Installation Instructions, Modular Cabinet – Power Cabling
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 greater than 300W, such as a PBX power supply.
Fig. 19–7A & Fig. 19-7B give a schematic diagram of this configuration. Fig. 19–8 gives the cable
diagram of this configuration.
ext
-48V
Fig. 19-7A - Schematic Diagram of Powering Modular Cabinet and 7 CLUs/SLUs with an External
ext
-48V
ext
-48V
Fig. 19-7B Schematic Diagram of Powering the Modular Cabinet and 7 CLUs/SLUs with two
19-6
B
A
Power Supply
B
A
Backplane
separate -48V External Power Supply
PW- EXT
PW-BP
Backplane
MCCB
Internal
Modular Cabinet
PW-EXT
PW-BP
MCCB
Internal
Modular Cabinet
CLU/
SLU
CLU/
SLU
Install-DCT1900/R8/mw
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