Filter
Top Products
Chapter 1: Product Description December 20, 2004
1-10 LTPH-UM-1261-01
Figure 1-7. HLU Slot Wire-wrap Pinouts for HDSL4 Circuits
CONNECTING SPAN POWERED XDSL CIRCUITS TO THE HMS-318 LIST 3 SHELF
The following paragraphs provide information on making Span Powered xDSL connections to the HMS-318
List 3 shelf.
Span Powered xDSL Plug-in Connections
Span Powered xDSL (labeled xDSL B and A IN) connections to the HMS-318 List 3 shelf can be made through
HMS-318 List 3 shelf’s rear-panel 50-pin Amphenol-type male connectors P1 (labeled CO PAIR 1) and P2 (labeled
CO PAIR 2), respectively. Span Powered xDSL (labeled xDSL A and B OUT) connections to the shelf can be made
through rear-panel 50-pin Amphenol-type male connectors P3 (labeled SPAN PAIR 1) and P4 (labeled SPAN PAIR
2). All of these connectors (P1, P2, P3 and P4) are described in the section titled “HMS-318 List 3 Rear View” on
page 1-3 (refer to the LoopStar LPS-300C L1 Power Module Technical Practice, catalog number SCP-LPS300-010
for installation, initialize and power up information).
ATTENTION
To ensure against damage to electronic components, ESD protection must be employed in the
handling of all circuit cards. Therefore, antistatic discharge wrist-straps should be used
whenever circuit cards are being removed or replaced. The antistatic discharge straps should be
connected to frame ground. At all other times (shipping, storage, and so forth), these circuit cards
should remain in static-shielding protective bags (for a description of card preventive measures,
see Appendix C: ”Circuit Card Preventive Measures” on page C-1).
DSX-1 (IN)Tip
DSX-1 Tip 1 (OUT)
A
B
C
D
E
F
J
H
Ground (GND)
HDSL4 Loop 1 Tip
HDSL4 Loop 1 Ring
System Alarm *
Management Bus *
Frame Ground -48 Vdc Battery
Factory use only
Fuse Alarm **
1
2
3
4
5
6
7
8
9
10
K
L
** Fuse alarm normally floating (0 to -80 Vdc maximum)
and at -48Vdc (10 ma maximum) when activated.
* System alarm and management bus reserved.
Notes:
DSX-1 (IN)Ring
DSX-1 Ring 1 (OUT)
HDSL4 Loop 2 Tip
HDSL4 Loop 2 Ring