Shelf And Power Supply Description; Shelf - Nt4X25Bh Or Nt4X25Dh; Nt4X25Bh/Dh Shelf - Mounting Hole Dimensions - Northern Telecom DMS-100 Series Installation And Maintenance Manual

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0 Data units are CSA (Canadian Standards Association) approved and
0 UL (Underwriters Laboratories) listed.
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SHELF AND POWER SUPPLY DESCRIPTION

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Shelf - NT4X25BH or NT4X25DH

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0 The rackmount DU equipment shelf (NT4X25BH or NT4X25DH) fits into
0 a standard 19 in (48.3 cm) rack (frame).
0 up to 16 rackmount
0 NT4X25BH shelf, NT4X25DK or DL for the NT4X25DH shelf).
0 ing hardware kit (NT4X2591) is required
0 Adapter plates
0 rack that is wider than 19 in (48.3 cm).
0 mounting holes
0 front of the shelf has a safety bar to secure the DUs in place.
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0 top edge of shelf
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0 o <
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0 o <
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0 bottom edge of shelf
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0 Figure 3.14
0 The backplane of the shelf has a C0 connector for
0 16-pair data
0 DTE. The V.35 DUs require an RS-232C-to-V.35 adapter cable
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DUs and one power supply (NT4X2554 for the
(PO686254) are available to mount the shelf in a
on the shelf is illustrated in Figure 3.14.
1.5 in (3.7 cm) from hole to top of shelf
V
mounting hole
mounting hole
1.5 in (3.7 cm) from hole to bottom of shelf
V

NT4X25BH/DH Shelf - Mounting Hole Dimensions

line cable. There are 16 DB-25 connectors for the
297-2121-226
VINTAGE 05.01
The shelf accommodates
A mount-
to install the
The spacing for
terminating
shelf.
the
The
a
that
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