Installing The Cabinet Jumper Assemblies - Northern Telecom DNC-50 Installation Manual

(12) Repeat Steps 1 to 11 for each additional cabinet being installed.
(13) When all the cabinets in a lineup have been positioned and plumbed,
(14) Insert the plastic end foot supports into the grooves in the base of the
(15) Remove the EMI connectors from inside the cabinets by snipping the

Installing the Cabinet Jumper Assemblies

There are three types of cabinet jumper assembly: the input, horizontal, and
terminating jumper assemblies. They are designed to provide electrical
continuity for the system bus from the input jumper, through each shelf and
cabinet in the system, to the terminating jumper. Fig. 4-5 shows the jumper
assemblies and their features.
Note: It may be necessary to make further leveling adjustments
after the shared resource units are installed, as the weight of the
SRUs can cause the cabinets to shift somewhat.
double check to ensure that the following margin deviations have been
met:
• The top of the cabinets must be on a level plane with no deviation.
• The gap between cabinets at the top must be the same as at the
bottom, 9.5 mm (3/8 inches).
• The cabinets must not deviate from a straight baseline (the
front-of-cabinet line) by more than 1.5 mm (1/16 inch) for an
eight-cabinet lineup.
Once installed, do not move the cabinets, or operating faults may
result.
two end cabinets, and engage them by pushing them from the front.
(See Fig. 4-4.)
Note: The two foot assemblies (one for each end) are not
interchangeable. The part number for the left-hand foot assembly
(as viewed from the front) is PO661670; for the right-hand foot
assembly, PO657397.
tie-wraps with the small wire cutters. Then set the connectors aside to be
installed after all shared resources units have been installed.
Installing a -48 Vdc Power Distribution System 21
- CAUTION -
Practice 450-1011-201