Section 28M-A20-8A0-20A
030-101678 Rev. A
R
0803IARA
2
Model Number
!
CLEI* Code
CPR/ Barcode
Network
Connector Types Customer
Connector Types
Power
S
l
Key
L k
/
Wirewrap
25-pair Telco
Wirewrap 25-pair RJ48H
RJ48C/S
Suppl
y
y
Lock
28MA208A
NCM48S0DRA
N70493
/442359
X
X
X
X
X
X
28MA208AP
NCM48T0DRA
N70502
/442418
X
X
X
X
X
X
X
Notes:
1.
Model numbers are the base of the part numbers but without the prefix (i.e., A90-").
2.
All assemblies accommodate up to 8 half-width (200 MECHANICS
r
) modules or 4 full-width (400-type) modules.
3. All assemblies provide a lead-seal lock.
*
CLEI is a trademark of Telcordia Technologies.
Table 1. Ordering and Option Information
S
8-circuit capacity with 200 MECHANICS
r
modules
(ac-
cepts both 400-type and 200-type modules)
S
9th slot for 48 VDC power supply module
S
Used in digital or analog data applications
S
Metal construction, with ventilation holes
S
Key-locking front door for module-compartment
(with see-
through window and lead seal lock)
S
Secure covers for Facility and Customer wiring areas
(also
contains lead seal)
S
Barrier strip/terminal block for external power source
S
Variety of input/output wiring options
S
Facility wirewrap and 25-pair cable connectors
S
Customer wirewrap, RJ48C/S, and RJ48H connectors
S
Eight, module, card-edge connectors
S
2-Amp fuse and fuse alarm LED
S
Built-in wall-mount brackets
(one-piece backplate)
S
Strain relief wiring grommets at cable entrance holes
S
Strategically-located cable tie-downs
(ties included)
S
Ground lug
(requires #6 AWG copper wire)
S
Circuit ID card and clear, plastic, card packet
2.
OPTIONS & FEATURES
This part describes each OmniPak
t
8 feature or option; Part 3
provides information for each feature which requires installer
wiring connections.
2.1
Exterior Features
The OmniPak
t
8 contains features and options accessible or
visible from the assembly exterior (see the paragraphs below).
2.1.1
Facility Compartment & Power Wiring Cover
A protective and secure metallic cover for the Facility connec-
tors and the power and ground connectors is provided at the top
of the OmniPak
t
8. The cover is removed by loosening the
thumb-type screw; however, the module door also must be
opened to release (unlock) an internal lock for this cover (a long
push-pin at the top of the module compartment slides into an in-
terior locking flange on the cover when the module door is
closed).
2.1.2
Module Front Door
The OmniPak
t
8 provides a removable protective door for the
modules which doubles as a see-through window to enable the
installer to easily view the modules’ status LEDs, for testing pur-
poses. A keyed lock secures the cover, to limit access to the
installed modules. When the module door is locked or closed,
the facility compartment cover cannot be opened.
2.1.3
Customer Wirewrap Compartment
A protective and secure metallic cover for the Customer wire-
wrap-pin connectors is provided at the bottom of the
OmniPak
t
8. The cover is opened by loosening the thumb-type
screw. If the RJ48C/S/H connector(s) are used for customer
connections, this compartment will not need to be opened.
2.1.4
Circuit ID Card and Card Sleeve
A circuit identification card and a clear plastic card packet is pro-
vided for customer convenience, to help the user identify the
cards that are installed in the OmniPak
t
8.
2.1.5
Built-in Mounting Brackets
A metal backplate at the rear of the OmniPak
t
8 contains built-
in mounting brackets with pre-drilled, key-slotted, mounting
holes. Two mounting holes are at the top and two are at the bot-
tom. To access the top mounting holes, the Facility
Compartment cover must be removed.
2.1.6
Cable Strain-Relief Grommets & Access Holes
A round cut-out near the top, right side of the assembly provides
Facility and power wiring/cable access through a strain-relief
grommet. A similar cut-out, with a strain-relief grommet, is lo-
cated at the bottom right side of the assembly, for customer
wiring and cabling access. A third cable access opening" is pro-
vided and created at the top right side when the Facility
Compartment cover is secured in place (best seen in Figure 1).
This opening is for larger and stiffer cables, like the Telco 25-pair
cables and the AC power cord of the power supply module.
2.1.7
Fuse Alarm LED
An FA Fuse Alarm LED is provided as an indication that the in-
ternal fuse is open. This red LED is located in the customer
wiring area by the RJ48C/S jacks (refer to Figure 2). When this
LED is lit, it indicates the internal 2 Amp fuse is open.
- NOTE -
The customer RJ48C/S jacks and the 25-pair RJ48H connector at
the bottom of the assembly can be accessed from the exterior, howev-
er these are explained under Paragraph 2.2.6, hereafter.
