ADC HiGain HLU-200 User manual

HiGain
HiGain
USER MANUAL
HLU200 L1A
AHT1U
LOOP
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HDSL
SETUP
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HLU-200 List 1A Line Unit
ProductCatalog: 350-200-111-02
CLEI: SLL2U6LG

350-200-111-02, Issue 2
ii October 4, 1999 HLU-200 List 1A
Revision History of This Manual
To order copies of this document, use document catalog number
350-200-111-02.
Copyright
October 4, 1999
© 1999 ADC DSL Systems, Inc. All rights reserved.
Trademark Information
ADC is a registered trademark of ADC Telecommunications, Inc. HiGain is a
registered trademark of ADC DSL Systems, Inc. No right, license, or interest to such
trademarks is granted hereunder, and you agree that no such right, license, or interest
shall be asserted by you with respect to such trademark.
Other product names mentioned in this practice are used for identification purposes
only and may be trademarks or registered trademarks of their respective companies.
Disclaimer of Liability
Information contained inthis document is company privateto ADC DSL Systems, Inc.,
and shall not be modified, used, copied, reproduced or disclosed in whole or in part
without the written consent of ADC.
Contents herein are current as of the date of publication. ADC reserves the right to
change the contents without prior notice. In no event shall ADC be liable for any
damages resulting from loss of data, loss of use, or loss of profits, and ADC further
disclaims any and all liability for indirect, incidental, special, consequential or other
similar damages. This disclaimer of liability applies to all products, publications and
services during and after the warranty period.
Issue Release Date Revisions Made
1October 4, 1999 Initial Release
2February 14, 2002 ADC Rebranding

350-200-111-02, Issue 2 Using This Manual
HLU-200 List 1A October 4, 1999 iii
USING THIS MANUAL
The following conventions are used in this manual:
•Monospace type indicates screen text.
•Keys you press are indicated by small icons such as or . Key
combinations to be pressed simultaneously are indicatedwith a plus sign
as follows: + .
•Items you select are in bold.
Three types of messages, identified by icons, appear in text.
UNPACK AND INSPECT YOUR SHIPMENT
Upon receipt of the equipment:
•Unpack each container and inspect the contents for signs of damage. If
theequipmenthasbeendamaged in transit, immediately report theextent
of damage to the transportation company and to ADC DSL Systems, Inc.
Order replacement equipment, if necessary.
•Check the packing list to ensure complete and accurate shipment of each
listed item. If the shipment is short or irregular, contact ADC DSL
Systems, Inc. as described in Product Support on page 23. If you must
store the equipment for a prolonged period, store the equipment in its
original container.
Notes contain information about special circumstances.
Cautions indicate the possibility of personal injury or
equipment damage.
The Electrostatic Discharge (ESD) symbol indicates that a
deviceorassemblyissusceptibletodamagefromelectrostatic
discharge.
YENTER
CTRL ESC

Table of Contents 350-200-111-02, Issue 2
iv October 4, 1999 HLU-200 List 1A
TABLE OF CONTENTS
Overview________________________________________________1
Compatibility............................................................................2
Front Panel ...............................................................................3
Installation ______________________________________________5
Setting the HDSL Line Voltage Option...................................5
Installing the HLU-200 ............................................................6
Provisioning _____________________________________________7
Using the Mode and Select Buttons .........................................7
Default Settings........................................................................8
Using the Craft Port..................................................................8
System Settings ........................................................................9
Troubleshooting_________________________________________12
Alarms....................................................................................12
Loopbacks ..............................................................................13
Four-Character Diagnostic Messages.....................................15
Specifications ___________________________________________17
Power Parameters _______________________________________19
Non Doubler AHT1U Applications .......................................19
Doubler AHTIU Applications................................................20
Product Support_________________________________________23
Certification andWarranty_____________ Inside Back Cover

350-200-111-02, Issue 2 Overview
HLU-200 List 1A October 4, 1999 1
OVERVIEW
The ADC®HiGain®Line Unit Model HLU-200 List 1A (AHT1U) 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 a
High-bit-rate Digital Subscriber Line (HDSL) interface. The HLU-200 is
essentially an AT1U line unit with the T1line interface circuit replaced by an
HDSL interface circuit. When used in conjunction with a HiGain Remote
Unit (HRU), the system provides 1.544 Mbps transmission on two
unconditioned copper pairs over the full Carrier Serving Area (CSA) range.
The CSA includes loops of up to 12,000 feet of AWG 24 or 9,000 feet of
AWG 26 wire, including bridged taps. The CSA range can be doubled with a
HiGain Doubler Unit (HDU) or tripled with two HDUs.
This guide describes HLU-200 List 1A operationwhen used with andwithout
doublers. The HRU can be placed up to 3000 feet into the network for extra
range withoutdoublers. However, this requires an external Network Interface
Device (NID) to be placed at the Network Interface (NI), and the HRU must
have the Smart-Jack (LB) option set to Disable. The HLU-200 List 1A
powers both the HDU and HRU, but the HRU must be locally powered for
two-doubler applications.
The HLU-200 List 1A is different from the HLU-200 List 1F only in that the
+5 V fuse has been increased from 0.75 A to 1.0 A for improved reliability.

Overview 350-200-111-02, Issue 2
2 October 4, 1999 HLU-200 List 1A
COMPATIBILITY
The HLU-200 List 1A operates as a channel card in a DSC Litespan-2000
Channel Bank. The Litespan-2000 system consists of a Central Office (CO)
bank connected to a remote bank over an Optical Carrier 3 (OC3) fiber link.
Each bank has slots for 56-channel plug-ins. The HLU-200 is typically
installed in the remote bank, where it is used to transmit a T1 payload to a
remote HRU-412. The transmission is over two unconditioned HDSL cable
pairs, with or without doublers. The HLU-200 is the HDSL equivalent to an
AT1U channel card, used to transmit a T1 payload to a remote location over
conventional T1 spans.
The HLU-200 List 1A is compatible with Litespan-2000 software releases
7.1.x and 8.1.x and above. The HLU-200 List 1A is not compatible with the
Litespan-2000 Management System and must be maintained, provisioned
and monitored from the front-panel RS-232 maintenance port.
The HLU-200 can be cross-connected to another HLU-200 or to another
asynchronous T1 channel unit in the same channel bank or in the distant
channel bank. These point-to-point dedicated circuits are initiated by issuing
the standard TL1-based cross-connect commands to the Maintenance and
Test Interface (MTI) card. The MTI card identifies the HLU-200 List 1A as
an AHT1U plug.

350-200-111-02, Issue 2 Overview
HLU-200 List 1A October 4, 1999 3
HLU200 L1A
AHT1U
LOOP
FAIL
HDSL
SETUP
M
A
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G
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(db)
RS
232
DCE
M
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S
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X
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B
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Status LEDs
RS-232 craft
port
Four-character display
Mode and Select buttons
Pull tab
Test ports
FRONT PANEL
Figure 1. HLU-200 List 1A Front Panel

Overview 350-200-111-02, Issue 2
4 October 4, 1999 HLU-200 List 1A
Table 1. Front Panel Features
Name Function
Status LEDs Indicates system status.
Loop LED Lights whenever any of the HLU-200 system loopbacks are in
effect.
Flashes when the AHT1U is in the armed state for an intelligent
repeater loopback command.
Fail LED A red LED controlled by the CBA. Used with revision 7.1.2, and
higher software versions, this LED lights when the HLU-200 is
first plugged into the CBA and remains lit until the CBA has
finished program download and communication with the
HLU-200. It also lights whenever there is a service-affecting
failurewithintheCBA.(TheLEDremainslitatalltimeswhenthe
HLU-200 is used with revision 7.1.1 CBAs.)
HDSL LED Flashes green during HDSL synchronization.
Lights steady green when both HDSL loops are in sync and no
minor alarm conditions exist.
Flashes red for any of the alarm conditions, or if the on-board
48 V fuse opens.
Lights steady yellow when a self-test is in progress.
System option buttons MODE and SEL buttons are used to set system options.
Four-character display Four-characterLCD that provides status messages for HDSL,
signal-to-noise margin, optional settings, and alarms.
RX and test ports Splitting access and bridging jacks (210-Bantam-type).
RS-232 craft port Accessed through a DB9/210 adapter (p/n 120-1035-01,
shipped with every unit) and configured as Data
Circuit-terminating Equipment (DCE) that allows you to control
the HLU-200 through a maintenance terminal (or a PC with
terminal emulation software).
Pull tab Used to remove the HLU-200 from the CBA.
Unlike the HLU-200 List 1F, the four-character display of the
HLU-200 List 1A does not illuminate when first inserted into a
shelf slot. This conserves power if the entire CBA is power
cycled. The List 1A display illuminates for five minutes when
either of the front-panel buttons, MODE or SEL, is pressed.

350-200-111-02, Issue 2 Installation
HLU-200 List 1A October 4, 1999 5
INSTALLATION
Upon receipt of the equipment, visually inspect it for signs of damage. If the
equipment has been damaged in transit, immediately report the extent of
damage to the transportation company and to ADC.
SETTING THE HDSL LINE VOLTAGE OPTION
The HDSL line powering voltage is set by the S1 switch. Bipolar (BIP) sets
the HDSL line voltage to +65 Vdc on loop 2 (+100 Vdc for doubler circuits)
and -65 Vdc on loop 1 (-100 Vdc for doubler circuits). This setting reduces
the maximum ground referenced voltage but applies positive voltage to the
cable pairs, which could accelerate corrosion on the cable pairs. Unipolar
(UNI) sets the HDSL line voltage to 0 Vdc on loop 2 and to -130 Vdc on loop
1 (-200 Vdc for doubler circuits). This setting keeps the HDSL cable pair
voltage at or below ground potential, thereby avoiding corrosion problems
caused by cable voltages more positive than ground.
The line voltage power supply, used for both options, is ground referenced
and also ground isolated by 200 k9. The ground isolation reduces problems
due to induced noise currents and large surge voltages that are ground
referenced. Ground isolation also reduces ground-fault currents, which
improves product safety. The safety issue depends solely on the differential
voltage across Loop 1 and Loop 2 and is independent of the S1 setting.

Installation 350-200-111-02, Issue 2
6 October 4, 1999 HLU-200 List 1A
INSTALLING THE HLU-200
To install the HLU-200 into a Litespan-2000 channel bank:
1Slide the HLU-200 into the card guides for the desired slot, then push the
unit in until it touches the channel-bank backplane card-edge connector.
2Carefully push the unit in until it is entirely within the card guide, making
sure that the unit is properly seated.
Figure 2. Installing the HLU-200