ADC HiGain HLU-200 User manual

HiGain
HiGain
USER MANUAL
AHT1U
HLU200 L1E
LOOP
FAIL
HDSL
R
S
2
3
2
HLU-200 List 1E Line Unit
Product Catalog: 350-200-115-02
CLEI: SLILNS5AAA

350-200-115-02, Issue 2
ii September 25, 1998 HLU-200 List 1E
Revision History of This Manual
To order copies of this document, use document catalog number
350-200-115-02.
Copyright
September 1998
© 1998 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 thatno suchright, license, orinterest
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 in this documentis company private to 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
01 September 25, 1998 Initial Release
02 April 9, 2002 ADC Rebranding

350-200-115-02, Issue 2 Using This Manual
HLU-200 List 1E September 25, 1998 iii
USING THIS MANUAL
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
theequipmenthasbeendamagedin transit,immediatelyreportthe extent
of damage to thetransportation 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. 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
deviceorassemblyissusceptibleto damagefromelectrostatic
discharge.

Unpack and Inspect Your Shipment 350-200-115-02, Issue 2
iv September 25, 1998 HLU-200 List 1E

350-200-115-02, Issue 2 Table of Contents
HLU-200 List 1E September 25, 1998 v
TABLE OF CONTENTS
Overview _______________________________________________ 1
Features.................................................................................... 1
Compatibility ........................................................................... 4
Installation _____________________________________________ 5
Installing the HLU-200 List 1E ............................................... 5
Card-Edge Connector............................................................... 6
Provisioning ____________________________________________ 7
Line Circuit Settings Option.................................................... 7
Using the Maintenance Terminal ___________________________ 8
Connecting to the Craft Port .................................................... 8
System Settings........................................................................ 9
Alarms ________________________________________________ 12
Diagnostic Messages.............................................................. 13
Loopbacks.............................................................................. 15
Specifications __________________________________________ 17
Documentation _________________________________________ 17
Product Support________________________________________ 18
Limited Warranty................................................................... 19
FCC Compliance.................................................................... 19

Table of Contents 350-200-115-02, Issue 2
vi September 25, 1998 HLU-200 List 1E

350-200-115-02, Issue 2 Overview
HLU-200 List 1E September 25, 1998 1
OVERVIEW
The ADC®HiGain®HLU-200 List 1E is an asynchronous DS1 interfaceunit
that plugs into the Channel Bank Assembly (CBA) of a DSC
LITESPAN-2000 optical loop carrier system to provide an HDSL interface.
The HLU-200 List 1E is essentially an AT1U line unit with its T1 line
interface circuit replaced by an HDSL line 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
Service Area (CSA) range. The CSA includes loops up to 12,000 feet of
AWG 24 wire or 9,000 feet of AWG 26 wire, including bridged taps. This
CSA range can be doubled with a HiGain Doubler Unit (HDU) 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 TRY-TSY-000063 (Network
Equipment Building System (NEBS) Generic Equipment requirements) and
TR-TSY-000499 (Transport System Generic Requirements - TSGR)
common requirements. Ground faults occurring at any point along any span
on any conductor are immediately detected and the HiGain circuit shuts
down. The line unit then applies power periodically to the first span to detect
the ground fault condition. This power cycling and ground fault protection
continues as long as the fault condition exits.
The HLU-200 List 1E is compatible with the DSC LITESPAN 2000 Channel
Bank Version 7.1x and 8.1x.
FEATURES
Figure 1 illustrates the HLU-200List 1E frontpanel. Table 1 defines the front
panel components.

Overview 350-200-115-02, Issue 2
2 September 25, 1998 HLU-200 List 1E
Figure 1. HLU-200 List 1E Front Panel
HLU200 L1E
LOOP
Status indicators
Craft port
Retaining latch
FAIL
HDSL
R
S
2
3
2
AHT1U

350-200-115-02, Issue 2 Overview
HLU-200 List 1E September 25, 1998 3
Table 1. Front Panel Features and STATUS LED States
Name Function
Status Indicators Indicates loopback, HDSL, and error status, as described below.
LOOP Lights green when a loopback is in effect.
FAIL Controlled by the channel bank. The LED remains on at all times
when the HLU-200 is used with revision 7.1.1 banks due to a
software flaw in 7.1.1 When used with revision 7.1.2 or higher,
it lights when the HLU-200 is first plugged into the bank and
remains on until the bank finishes its program download and
handshakes with the HLU-200 line unit. During normal
operation, it lights when there is a failure that affects service
within the bank.
HDSL Tri-colored LED:
flashes green during HDSL sync acquisition on either HDSL
loop.
flashes red for any of the alarm conditions.
lights steady green when both HDSL loops are in sync and no
minor alarms exist.
lights steady red if the on-board 48 V fuse opens.
RS-232 Craft port Provides asynchronous access to the menu interface for system
maintenance, provisioning, and performance monitoring
firmware. Access is through a maintenance terminal or a PC with
terminal emulation software connected to this 9-pin DB-9 female
connector. The port is configured as DCE at 9600 baud, with 8
data bits, 1 stop bit, and no parity.
Retaining latch Secures the HLU-200 into place.

Overview 350-200-115-02, Issue 2
4 September 25, 1998 HLU-200 List 1E
COMPATIBILITY
The HLU-200 List 1E operates as a channel card within a DSC LITESPAN
2000 Channel Bank. The LITESPAN 2000 system consists of a CO bank that
is connected to a remote bank over an OC3 fiber link. Each bank has slots for
56 channel plug-ins. The HLU-200 List 1E is typically installed in the remote
bank where it is used to transmit a T1 payload to a remote HRU over two
unconditioned HDSL cable pairs, with or without doublers. It is the HDSL
equivalent to an AT1U channel card, which is used to transmit a T1 payload
to a remote location over conventional T1 spans.
The HLU-200 List 1E is compatible with software releases 7.1.x and 8.1.x
and above, of the LITESPAN 2000 system. The List 1E is not compatible
with the LITESPAN 2000 Management System and must be maintained,
provisioned, and monitored from its front panel RS-232 Craft port. The
HLU-200 List 2D (AHDSL) line unit provides integrated management and is
compatible with the LITESPAN 2000 TL1-based Network Management
System and the LITECRAFT Management System in Version 8.x.
The HLU-200 List 1E timing is not synchronized to the LITESPAN bank
timing but runs asynchronously with respect to it.
TheHLU-200 List 1E canbe cross-connectedto another HLU-200 oranother
asychronous T1 channel unit within its own channel bank or in the distant
channel bank.This is shown inFigure3 on page16, wheretestaccessateither
the remote or local ends can be accomplished by use of ADS1U and AT1U
line cards. 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 that identifies the HLU-200 List 1E as an AHT1U plug.

350-200-115-02, Issue 2 Installation
HLU-200 List 1E September 25, 1998 5
INSTALLATION
Before installing the HLU-200 List 1E, visually inspect the unit for signs of
damage. If the equipment was damaged in transit, report the extent of the
damage to the transportation company and to ADC.
INSTALLING THE HLU-200 LIST 1E
To install the HLU-200 List 1E into a Litespan-2000 channel bank:
1Slide the HLU-200 List 1E 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 andthe
retaining latch closes.
3Install the HLU-200 List 1E into the 2000 channel bank.
4Ensure that the following LEDs illuminate:
•The FAIL LED lights red until the handshake between the bank and
the HLU-200 List 1E is complete.
•The HDSL LED flashes GREEN until an HDSL link is established
between the HLU-200 List 1E and an HRU (when an HRU is
installed).
5Once the HDSL link has been established, the LEDs return to a normal
operational state as described in Table 1 on page 3.
If the HLU-200 List 1E is removed from a slot, it must not be
reinserted for at least 15 seconds. Reinserting it sooner may
temporarily lock the HLU-200 List 1E into an unstable state.

Installation 350-200-115-02, Issue 2
6 September 25, 1998 HLU-200 List 1E
CARD-EDGE CONNECTOR
Figure 2 shows the HLU-200 List 1E pinouts.
Figure 2. HLU-200 List 1E Pinouts
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
TIP 1
RING 1
TIP 2
RING 2
SW BATT
R222
47K
ACTIV MN
XMT CLK MN
RCV CLK MN
FRM SYNC MN
TDM RCV MN
TDM TX MN
+5 VOLTS +5 VOLTS +5 VOLTS
P1
ROW A
Loop 1
Loop 1
Loop 2
Loop
2
P1
ROW B SURGE GROUND
P1
ROW C
ACTIV PR
XMT CLK PR
RCV CLK PR
FRM SYNC PR
TDM RCV PR
TDM TX PR
TIP 1
RING 1
TIP 2
RING 2
T1 CLK MN
T1 CLK
8KHZ REF A
8KHZ REF B
T1
R2
}
}
}
}

350-200-115-02, Issue 2 Provisioning
HLU-200 List 1E September 25, 1998 7
PROVISIONING
The HLU-200 List 1E specific user options can only be set from its front
panel RS-232 Craft port. Only one of these options, the DS1 line code (B8ZS
or AMI), is sent to the LITESPAN system manager, which reads the value
and then provisions the LITESPAN Gate Array accordingly. The
HLU-200 List 1E line code setting is not available from OMAPS. It must be
provisioned and read from the RS-232 Craft port.
LINE CIRCUIT SETTINGS OPTION
The HLU-200 List 1E supports the following Line Circuit Settings Option:
1Retrieve Line Circuit Settings (DLP-322) on a slot occupied by a
HLU-200 List 1E:
aAccess ID.
bAIS (Alarm Indicating Signal). This entry determines the type of
AIS that is sent upstream of the CBA when the HLU-200 List 1E is
in its alarm state. It is permanently set to the all ones state. The None
or All option, normally available in standard Litespan cards, is not
available in the HLU-200 List 1E.
cRed Lined. A Yes or No indicating a circuit’s Red Lined status. A
circuit cannot have its provisioning changed without first notifying
the customer served by that circuit.
dCross Connection Type. Indicates that anAHT1U iscrossconnected
to another T1 or DS1 line unit.
eService State IS or OOS of the unit.
fStatus: Indicate the status of the AHT1U: Cross Connected, OOS,
MT.
2EDIT T1U Circuit Settings (DLP-323).

Using the Maintenance Terminal 350-200-115-02, Issue 2
8 September 25, 1998 HLU-200 List 1E
USING THE MAINTENANCE TERMINAL
The 9-pin RS-232 connector on theHLU-200 front panel allows you to use a
standard RS-232 cable to connect your system to a maintenance terminal or
PC running a terminal emulation program. Once connected you can access
the maintenance, provisioning, and performance screens.
CONNECTING TO THE CRAFT PORT
To provision the HLU-200 through the RS-232 Craft port:
1Configure the maintenance terminal to the following communication
settings:
•1200 to 9600 baud (9600 baud is recommended)
•Parity: NONE
•8 data bits
•1 stop bit
•Hardware Flow Control set to NONE
2Use a serial cable to connect the RS-232 Craft port on the maintenance
terminal to the HLU-200 front panel RS-232 Craft port.
3On each screen, enter the key represented by the letter in parenthesis for
the parameter to be changed. Each entry of this letter scrolls the
parameter to its next value.
4Afterall selections have been made, press to exit and to confirm the
changes. This activates the new choices and returns control to the Main
Menu Screen.
The following user options must be set through the RS-232 Interface: Circuit
ID, Time and Date, DS0 Blocking, and Margin Alarm Threshold.
If using the Microsoft Windows terminal emulation program,
from the Settings, Terminal Preference menu, deselect
Show
Scroll Bars
and Use Function , Arrow , and Ctrl Keys for
Windows
.
E C

350-200-115-02, Issue 2 Using the Maintenance Terminal
HLU-200 List 1E September 25, 1998 9
SYSTEM SETTINGS
Table 2 shows the System Settings for the HLU-200 List 1E.
Table 2. System Settings
Mode Selection Description
ZBTS ON The HiGain system is in the ESF frame and is operating in
its Zero-Byte Timeslot Interchange (ZBTSI) mode.
OFF* The HiGain system is in the ESF frame and is operating in
its normal non ZBTSI mode.
ESAL 17 Activates the alarm input signal to the LITESPAN
microprocessor and flashes the red Status LED when 17
Errored Seconds (ES) (17 HDSL CRC errors oneither HDSL
loop or a total of 17 BPVs and FERR) occur within a 24-hour
period.
170 Activates the alarm input signal to the LITESPAN
microprocessor and flashes the red Status LED when 170
Errored Seconds (ES) (170 HDSL CRC errors on either
HDSL loop or a total of 170 BPVs and FERR) occur within a
24-hour period.
NONE* Prevents the generation of an alarm due to excessive
Errored Seconds.
LBTO NONE Disables automatic time-out cancellation of all loopbacks.
20 Sets automatic cancellation of all loopbacks to 20 minutes
after initiation.
60* Sets automatic cancellation of all loopbacks to 60 minutes
after initiation.
120 Sets automatic cancellation of all loopbacks to 120 minutes
after initiation.
ALM DIS Disables the Alarm input signal to the LITESPAN processor
from the HLUprocessor. The HDSL LEDstill flashes Red for
an alarm condition even when ALM DIS option is chosen.
ENA* Enables activation of the system alarm input signal to the
LITESPAN processor from the HLU processor.
LPBK DIS Configures the HLU-200 to ignore the 2 in 5 SmartJack
loopback command.
ENA* Enables the HLU-200 to respond to the 2 in 5 SmartJack
loopback command.

Using the Maintenance Terminal 350-200-115-02, Issue 2
10 September 25, 1998 HLU-200 List 1E
SPLB GNLB* Configures the HiGain system to respond to the generic
(3/4/5/6 in 7) in-band loopback codes.
A1LB and A2LB Configures the HiGain system to respond to the Teltrend
addressable repeater in-band loopback codes.
A3LB Configures the HiGain system to respond to the in-band
loopback codes of the Wescom addressable repeater.
A4LB Configures the HiGain system to respond to the in-band
loopback codes of the Wescom Mod 1 addressable
repeater.
A5LB Configures the HiGain system to respond to the in-band
loopback codes of the Teltrend Mod 1 addressable repeater.
PWRF DIS Disables powering to the HRU and/or doubler over the
HDSL pairs.
ENA* Enables powering to the HRU and/or doubler over the HDSL
pairs.
DS1 B8ZS Places both the HLU-200 and HRU into their B8ZS modes.
AMI* Places both the HLU-200 and HRU into their AMI modes.
AUTO The AUTO mode is not supported. If selected, the DS1 code
defaults to AMI.
FRMG AUTO* Configures theHiGain system to operate in an auto-framing
(AUTO) mode in which it continuously searches the input
T1 bit stream for a valid SF or ESF frame pattern. This
feature is required for fractional T1 applications (DS0
blocking) where it insures proper channel time slot
alignment. While the HiGain system can also process
unframed data in AUTO mode, it is recommended that the
unframed (UNFR) be used for all unframed applications.
Using the AUTO mode for unframed applications runs the
risk of detecting “pseudo-valid” frame sequences, which
can affect the data integrity.
UNFR Configures the HiGain system to operate in an unframed
mode. This mode disables the auto framing process and
forces the HiGain system to function as a transparent bit
pipe.
Table 2. System Settings (Cont.)
Mode Selection Description

350-200-115-02, Issue 2 Using the Maintenance Terminal
HLU-200 List 1E September 25, 1998 11
HAIS 2LP* Causes the HiGain system to transmit the AIS signal at both
the HLU-200 and HRU T1 output ports when both of the
HDSL loops are not in sync (LOSW).
1LP Causes the HiGain system to transmit the AIS signal at both
the HLU-200 and HRU T1 output ports when either of the
two HDSL loops is not in sync (LOSW) or if a Margin alarm
occurs.
SAIS ENA* Causes the List HRU to transmit the AIS signal towards the
Customer Interface (CI) when in NREM or SmartJack
loopback.
DIS Prevents the AIS signal from being transmitted to the NI
and replaces it with the network test signal in the HRU or by
a quiet termination (LOS) in the HRU.
MARG 0 to 15 dB
0*
The Margin Alarm Threshold determines the minimum
allowable margin below which an alarm will occur.
DSO Any combination
of the 24 DSO
channels/NONE*
The DSO blocking option allows any number of the 24 DSO
channels to be blocked at both T1 output ports where they
are replaced by the FF idle code.
*Indicates HLU-200 List 1E factory default settings
Table 2. System Settings (Cont.)
Mode Selection Description

Alarms 350-200-115-02, Issue 2
12 September 25, 1998 HLU-200 List 1E
ALARMS
The alarms are detected and reported to the LITESPAN microprocessor
though the “Alarm” signal from the HLU microprocessor as shown in Table
3. They also cause the HDSL LED to flash red.
Table 3. Alarm LEDs
ALRM Message Indication
ALRM LOSW Either of the HDSL loops has lost sync.
ALRM RLOS Loss of the HRU DS1 input signal.
ALRM TLOS A user option that causes the loss of the HRU DS1
input from the CI to initiate a logic loopback state in
the HRU.
ALRM H1ES HDSL loop 1 has exceeded the 24-hour user-selected
Errored Seconds CRC threshold.
ALRM H2ES HDSL loop 2 has exceed the 24-hour user-selected
Errored Seconds CRC threshold.
ALRM DS1 The total number of bipolar violations (BPV) at the
HRU DS1 input has exceeded the 24-hour
user-selected threshold.
ALRM MAL1 The margin on HDSL loop 1 has dropped below the
minimum threshold value set at the maintenance
terminal Margin Alarm Threshold option.
ALRM MAL2 The margin on HDSL loop 2 has dropped below the
minimum threshold value set at the maintenance
terminal Margin Alarm Threshold option.

350-200-115-02, Issue 2 Alarms
HLU-200 List 1E September 25, 1998 13
DIAGNOSTIC MESSAGES
The HLU-200 List 1E diagnostic messages are described in Table 4.
Table 4. HLU-200 List 1E Diagnostic Messages
Message Full Name Description
FERR Framing Bit Error
Occurred Framing bit error occurred at HLU T1 input.
LBPV Local Bipolar
Violation A bipolar violation has been received at the T1 input to the HLU.
SIG1 or SIG2 Signal 1 or Signal 2 The HLU & HRU transceivers are trying to
establish contact with each other.
S2(n)L1 or 2 Signal 2(n) Loop 1 or
Loop 2 The transceivers of the first doubler and either the HRU or second doubler are trying to
establish contact with each other on loops 1 or
2 of span 2(n).
H1(2)ES HDSL CRC Error
Channel 1(2) HLU HDSL Loop 1(2) CRC error.
ACQ1(2) Acquisition 1(2) The HLU & HRU multiplexers are trying to
establish synchronization over each loop.
ARM HiGain System
ARMED Armed to respond to Intelligent Repeater Loop Codes.
ACO Alarm CutOff A minor alarm has occurred, and been retired
to an ACO condition, by pressing the SEL
button on the HLU front panel.
Self Test The HLU is in a self test mode. This
occurs every power ON/OFF cycle.
ALRM Alarm Condition
Exists A minor alarm condition is in effect.
1=xx or 2=yy HDSL Loop
Margins Indicates the relative S/N at each HDSL transceiving input port. Any value of ‘06’ or
greater is adequate for reliable system
operation.
PWR FEED
SHRT Power Feed Short Indicates a short between the 2 HDSL pairs in span 1. This same message can occur with an
HRU is drawing the correct amount of power
over good cable pairs but cannot communicate
with the HLU.
PWR FEED
OPEN Power Feed Open Indicates an open circuit in both the T&R of either HDSL pair in span 1.

Alarms 350-200-115-02, Issue 2
14 September 25, 1998 HLU-200 List 1E
PWR FEED OFF Power Feed Off HDSL span power has been turned off by
setting the PWFD option to DIS or HDSL span
power has been turned off by use of the
A1LB/A2LB/A5LB Intelligent Office Repeater
(IOR) Power Down code.
PWR FEED
GND Power Feed Ground One of the HDSL loops has been grounded.
BER Bit Error Rate A system BER alarm is in effect.
BAD RT? No response from
HRU The HLU does not receive any response from the HRU. Thus, the HRU
integrity is questionable.
VER HLU Software
Version # This displayed during the System Settings review mode. Depress the MODE
button for 3 seconds to enter System Settings
review mode.
LIST 0xL HLU’s List # Displayed during System Settings
review mode defined above.
FRM Frame: SF, ESF,
UNFR, NONE Defines the type of frame pattern being received from the DSX-1.
Displayed during System Settings.
CODE Line Code: AMI, B8ZS This is the line code that the HLU is set to
receive and transmit at its T1
interfaces. Displayed during System Settings
mode defined above.
Table 4. HLU-200 List 1E Diagnostic Messages (Cont.)
Message Full Name Description