Product Overview; Description And Features - ADC HiGain HLU-200 User Manual

Product Overview

Descriptions and Features
ADC's HiGain Line Unit Model HLU-200 List 1D (AHT1U) shown in Figure 1, is an asynchronous DS1
interface unit that plugs into the Channel Bank Assembly (CBA) of a DSC Litespan-2000 optical loop carrier
system to provide an HDSL interface. The AHT1U is essentially an AT1U line unit with its T1 line interface
circuit replaced by an HDSL line interface circuit. When used in conjunction with an HRU-412 HiGain
Remote Unit, the system provides 1.544 Mbps transmission on two unconditioned copper pairs over the full
Carrier Serving Area (CSA) range. The CSA includes loops up to 12,000 feet of AWG 24 or 9,000 feet of
AWG 26 wire, including bridged taps. This CSA range can be doubled with an HDU doubler and tripled with
two doublers. The HiGain system uses HDSL (High-bit-rate Digital Subscriber Line) transmission technology
as recommended by Bellcore TA-TSY-001210. HiGain complies with TR-TSY-000063 (Network Equipment
Building System (NEBS) Generic Equipment requirements) and TR-TSY-000499 (Transport System Generic
Requirements - TSGR) common requirements.
The HLU-200 List 1D is compatible with the DSC Litespan-2000 Channel Bank version 7.1.x and 8.1.x
(originally 7.2.x).
2
HLU 200
L 1D
LOOP
FAIL
HDSL
R
S
2
3
2
AHT1U
1070
Figure 1. HLU-200 List 1D Front Panel.
November 22, 1996
150-200-114-03, Issue 03
HLU-200 List 1D