Verilink 2048 (34-00179) Product Manual - Manual (Page 8)

Installation 2-1 2048 PMU/NTU
Installation
2.0 Introduction
This section contains information and instructions required
to prepare the 2048 PMU for use. Included are initial
inspection procedures, mounting instructions, configuration
guidelines, connection instructions, and powering informa-
tion.
NOTE: Throughout this manual, all factory default
settings will be underlined.
2.1 Safety Summary
This manual contains information and warnings which must
be followed by the user to ensure safe operation and to
retain the equipment in a safe condition.
The WARNING sign denotes a hazard to the
operator. It calls attention to a procedure or practice
which, if not correctly performed or adhered to, could
result in injury or loss of life. Do not proceed beyond a
WARNING sign until the indicated conditions are fully
understood and met.
NOTE: Follow the proper ESD (electrostatic device)
procedures while handling the circuit boards.
2.2 Unpacking and Inspection
This unit is carefully packaged to prevent damage in ship-
ment. Upon receipt, inspect the shipping container for dam-
age. If the shipping container or cushioning material is
damaged, notify the carrier immediately and make a nota-
tion on the delivery receipt that the container was damaged
(if possible, obtain the signature and name of the person
making delivery). Retain the packaging material until the
contents of the shipment have been checked for complete-
ness and the instrument has been checked both mechanically
and electrically.
If the contents of the shipment are incomplete or, if there is
mechanical damage or defect, notify TxPORT. If the ship-
ping container is also damaged, or the cushioning material
shows signs of stress, notify the carrier of the damage as
well as TxPORT. Keep the shipping materials for carrier’s
inspection. TxPORT will arrange for repair or replacement
without waiting for claim settlement.
2.3 Supplied Materials
The TxPORT 2048 PMU/NTU is shipped from the factory
with the following equipment:
• 2048 PMU with 19" mounting brackets attached
• 2048 PMU Reference Manual
The user may also require the following additional materials
for the installation and operation of the 2048 PMU.
• -48 VDC power source
• A wall transformer to provide 110 VAC to -48 VDC
local power
• Network and DTE interface cables
• 20-gauge stranded wire (or similar) for DC power
and alarm connection
For specific applications, the user may require additional
cables and adapters. The interface requirements of any
application may be met by using the appropriate cable. Stan-
dard cables and ordering numbers are listed in Table 1-1 on
page 1-4. Contact TxPORT for any needed assistance in
cable selection.
2.4 Mounting
The 2048 PMU is a modular unit that plugs into either a sin-
gle unit housing or into a chassis that holds up to 12 units.
Single units are designed for stand-alone desktop use, wall
mounting, or chassis mounting (in either a vertical or hori-
zontal orientation). The unit uses an interchangeable front
panel to accommodate the chassis card cage.
The unit utilizes an interchangeable backplane to accommo-
date the nest mount card cage and, when used in the single
unit housing, to provide various connector types for differ-
ing application requirements. Backplane options for the
2048 include DB15, Twin -axial, and BNC connectors.
2.4.1 Stand-alone Unit
To access the circuit boards and configuration switches, per-
form the following steps: Open the front panel access door
and remove it by gently bending the plastic from the middle
using both hands. Then pull the two side strips of plastic
from the middle outwards until the four stops are clear of
the front panel. Pull the cover off the front panel. Then
remove the 2 screws and pull the front panel and circuit
boards out of the housing. Observe proper electrostatic
device handling procedures while holding the circuit boards.
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