Installing The Horizontal Jumper Assembly; Installing The Input Jumper Assembly - Northern Telecom DNC-50 Installation Manual

Dynamic network control systems
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Installing the Horizontal Jumper Assembly

A horizontal jumper assembly is required between each pair of cabinets. These
assemblies should be installed before the input jumper or terminating jumper
because they help lock the cabinets into position.
(1)
Carefully align the jumper with the alignment pins on the cabinet.
The pins are very sharp and may cause injury.
(2)
Push the jumper assembly onto the pins with firm but reasonable force,
as shown in Fig. 4-6. Ensure that the four bus connectors make contact
with the cabinet connecter and that the jumper assembly fits snugly
against the cabinet. Make sure that none of the four locking latches slips
between the cabinet and the edge of the jumper assembly.
(3)
Snap on the four locking latches.

Installing the Input Jumper Assembly

Each cabinet lineup requires one input jumper assembly. The input jumper
assembly is installed on the first cabinet in the lineup (the left-most cabinet as
viewed from the front). There are two versions, one with a power switch and
one without. If the version on your system has no power switch, you must
power the system up and down by unplugging the ac input cord.
When cabinets are being added to an existing system that is already equipped
with the input jumper, this procedure is not required.
(1)
Install the bottom hingepin on the horizontal jumper assembly using the
5/64 Allen wrench as shown in Fig. 4-7. The screw is provided in a
plastic bag taped to the jumper assembly.
IMPORTANT: Be certain that you install the bottom hingepin before
installing the jumper assembly on the cabinet. Otherwise, installing the
pin will be very difficult.
(2)
Engage the assembly's ac connector with the female receptor at the base
of the cabinet.
(3)
Carefully align the assembly with the alignment pins on the cabinet.
The pins are very sharp and may cause injury.
Installing a -48 Vdc Power Distribution System 23
- WARNING -
- WARNING -
Practice 450-1011-201

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