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Cisco MGX 8230 Edge Concentrator Installation and Configuration
Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001
Chapter4 Enclosure Installation
Rack Mounting an MGX 8230
Figure4-7 Rear View of MGX 8230 with 1 DC PEM
Step 2 Locate the pluggable terminal block (TB1) on the DC PEM to which you are connecting source power.
Figure4-8 DC Power Entry Module, Rear View
Step 3 Note the polarities of the TB1 connection points.
Figure4-9 il lustrates the polarity of each co nnection on the pluggable term inal block. The numbers start
with 1 on the left and go to 3 . T he connection at the left is for the 48 VDC wire. The middle wire is
Safety Ground. The connec tio n at th e right is for the positive retur n w ire (fo r th e 48 VDC).
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48 VDC
30A
TB1
1
2
3
OFF
48 VDC
30A
TB1
1
2
3
OFF
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