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LTPH-UG-1166-01
C
ONNECTING TO
This section provides information on making DSX-1 and HDSL2 connections to HMS-317 and HMS-318 shelves.
HDSL2 Plug-in Connections
DSX-1 connections to the HMS-317 and HMS-318 shelves can be made through HMS backplane connectors P1
(RCV to DSX) and P2 (XMT from DSX). HDSL2 connections to the shelves can be made through backplane
connectors P3 (HDSL Loop 1) and P4 (HDSL Loop 2). Connectors P1, P2, P3 and P4 are described in
and HDSL Span Connectors" on page
HDSL2 Wire-wrap Connections
DSX-1 and HDSL2 connections can be made to the individual card connectors through the HMS backplane
wire-wrap pins (0.045-inch square/1.14 mm). Straps for cable dressings and a protective Lexan rear cover are
provided with the shelf.
HMS-317 and HMS-318
HDSL2 C
IRCUITS
3.
Figure 6
shows the HLU card slot pinouts on the HMS backplane.
A
DSX-1
Tip
(IN)
B
DSX-1 Tip 1 (OUT)
C
D
E
F
HDSL2 Span Tip
H
System Alarm *
J
Frame Ground
K
L
Factory use only
Notes:
*
System alarm and management bus reserved.
**
Fuse alarm normally floating (0 to -80 Vdc maximum)
and at -48Vdc (10 ma maximum) when activated.
Figure 6. HLU Slot Wire-wrap Pinouts for HDSL2 Circuits
1
DSX-1
2
DSX-1 Ring 1 (OUT)
3
4
5
Ground (GND)
6
HDSL2 Span Ring
7
Management Bus *
8
-48 Vdc Battery
9
10
Fuse Alarm **
July 15, 2002
Ring
(IN)
Overview
"DSX-1
7
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