ADC HiGain HLU-388 List 5D Original operating instructions

HiGain
HiGain
FCC Class A Compliance
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the user will be
required to correct the interference at his own expense.
Limited Warranty
Product warranty is determined by your service agreement. Contact your sales representative or
Customer Service for details.
Modifications
Any changes or modifications made to this device that are not expressly approved by ADC DSL
Systems, Inc. voids the user's warranty.
All wiring external to the products should follow the provisions of the current edition of the National
Electrical Code.
Standards Compliance
This equipment has been tested and verified to comply with the applicable sections of the following
safety standards:
 GR 63-CORE - Network Equipment-Building System (NEBS) Requirements
 GR 1089-CORE - Electromagnetic Compatibility and Electrical Safety
 Binational standard, UL-1950/CSA-C22.2 No. 950-95: Safety of Information Technology
Equipment
Trademark Information
ADC is a registered trademark of ADC Telecommunications, Inc. HiGain is a registered trademark of
ADC DSL Systems, Inc. Other product names mentioned in this installation guide are used for
identification purposes only and may be trademarks or registered trademarks of their respective
companies.
Copyright Information
© 2002 ADC DSL Systems, Inc. All rights reserved. Information contained in this document is 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.
ADC DSL Systems, Inc.
14402 Franklin Avenue
Tustin, CA 92780-7013
Tel: [phone]
Fax: [phone]
Technical Assistance
Tel: [phone]
Tel: [phone]
Fax: [phone]
DNV C ertificatio n, Inc.
REGISTERED FIRM
ISO 9001/TL 9000
HLU-388 LIST 5D
The HiGain®Line Unit HLU-388 List 5D is the Central Office (CO) side of a
repeaterless, T1 transmission system. 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 24 (American Wire Gauge) AWG or 9,000 feet of
26 AWG wire, including bridged taps. This line unit can be used in applications with
or without HiGain Doubler Units (HDUs).
FEATURES
SPECIFICATIONS
•Front panel status LED, four-character status
display •Payload(PL)orHiGainGeneric(HG)loopback source identification
•Ultra low wander •Reduced power consumption
•Five-span range with four doublers
(60 kft, 24 AWG) •Low line-power option (-140 Vdc) for circuits with a single doubler
•Selectable power feed modes •Bit Error Rate (BER) alarm options
•Loss of Signal (LOS)/Alarm Indicator Signal
(AIS) payload alarm option •Bipolar Violation Transparency (BPVT) options
•Additional screens for inventory and
troubleshooting •Grounded loop detection
Operating Temperature -40 °F to 149 °F (-40 °C to + 65°C)
Operating Humidity 5% to 95% non-condensing
HDSL Span Voltage -140 or ±112 Vdc
Mounting DDM+ high-density shelf
HDSL Line Code 784 kbps 2B1Q
HDSL Output +13.5 dBm ±0.5 dB, 135 Ω
Maximum Provisioning Loss 35 dB at 196 kHz, 135 Ω
DS1 Line Rate 1.544 Mbps ±200 bps
DS1 Line Format Alternate Mark Inversion (AMI) or Bipolar with
8-Zero Substitution (B8ZS)
DS1 Frame Format Extended SuperFrame (ESF), SuperFrame (SF),
or THRU
DSX-1 Pulse Output 6 V pk-pk, pre-equalized for 0 to 655 feet of ABAM
cable
DSX-1 Input Level +1.5 to -7.5 dB DSX
INSTALLATION
To ensure proper installation of the HLU-388 List 5D:
1Lift the front panel and align the HLU-388 List 5D with the shelf rails.
2Slide the unit in and press the front panel down to secure.
POWER-UP SEQUENCE
When the HLU powers up, the four-character display illuminates and reports status
messages. If the HLU is not communicating with the next span device, the following
occurs:
1Alarm and diagnostic messages display (see the Front Panel Alarm Messages and
Front Panel Diagnostic Messages tables inside), followed by the SELF TEST
message.
2The Status LED turns yellow, indicating it has entered self-test mode.
If the HLU is communicating with the next span device, the following occurs:
1The Status LED flashes green while acquiring each device in the system, and
turns a steady green when the entire system is operating without any alarms.
2The four-character display reports margin (signal-to-noise ratio) readings and
insertion loss.
3If the status LED is not solid green, the display reports alarm conditions (see the
Front Panel Alarm Messages table inside).
PROVISIONING
1Access the Maintenance Terminal screens by pressing several
times.
aSet the date and time (select Set Clock from the Main Menu).
bSet the circuit IDs (select View System Inventory).
2Access the System Settings selection on the Main Menu to change the default
settings of any system parameters.
3Access the View Troubleshooting screen to view a graphical analysis of any
potential system problems.
4When the HLU is successfully installed and provisioned, clear Span Status,
Performance Data, Performance History, and Alarm History screens to ensure
accurate data and alarm reporting.
Continued
SPACEBAR
Þ
´,.E¶9\¨
1214379
September 15, 1999
Product Catalog: HLU-388 L5D
CLEI: T1L2B60A
Document: 350-388-154-06, Issue 6
5D
HLU-388 LIST 5D
LINE UNIT
QUICK INSTALLATION

HiGain
HiGain
FCC Class A Compliance
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the user will be
required to correct the interference at his own expense.
Limited Warranty
Product warranty is determined by your service agreement. Contact your sales representative or
Customer Service for details.
Modifications
Any changes or modifications made to this device that are not expressly approved by ADC DSL
Systems, Inc. voids the user's warranty.
All wiring external to the products should follow the provisions of the current edition of the National
Electrical Code.
Standards Compliance
This equipment has been tested and verified to comply with the applicable sections of the following
safety standards:
 GR 63-CORE - Network Equipment-Building System (NEBS) Requirements
 GR 1089-CORE - Electromagnetic Compatibility and Electrical Safety
 Binational standard, UL-1950/CSA-C22.2 No. 950-95: Safety of Information Technology
Equipment
Trademark Information
ADC is a registered trademark of ADC Telecommunications, Inc. HiGain is a registered trademark of
ADC DSL Systems, Inc. Other product names mentioned in this installation guide are used for
identification purposes only and may be trademarks or registered trademarks of their respective
companies.
Copyright Information
© 2002 ADC DSL Systems, Inc. All rights reserved. Information contained in this document is 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.
ADC DSL Systems, Inc.
14402 Franklin Avenue
Tustin, CA 92780-7013
Tel: [phone]
Fax: [phone]
Technical Assistance
Tel: [phone]
Tel: [phone]
Fax: [phone]
DNV C ertificatio n, Inc.
REGISTERED FIRM
ISO 9001/TL 9000
HLU-388 LIST 5D
The HiGain®Line Unit HLU-388 List 5D is the Central Office (CO) side of a
repeaterless, T1 transmission system. 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 24 (American Wire Gauge) AWG or 9,000 feet of
26 AWG wire, including bridged taps. This line unit can be used in applications with
or without HiGain Doubler Units (HDUs).
FEATURES
SPECIFICATIONS
•Front panel status LED, four-character status
display •Payload(PL)orHiGainGeneric(HG)loopback source identification
•Ultra low wander •Reduced power consumption
•Five-span range with four doublers
(60 kft, 24 AWG) •Low line-power option (-140 Vdc) for circuits with a single doubler
•Selectable power feed modes •Bit Error Rate (BER) alarm options
•Loss of Signal (LOS)/Alarm Indicator Signal
(AIS) payload alarm option •Bipolar Violation Transparency (BPVT) options
•Additional screens for inventory and
troubleshooting •Grounded loop detection
Operating Temperature -40 °F to 149 °F (-40 °C to + 65°C)
Operating Humidity 5% to 95% non-condensing
HDSL Span Voltage -140 or ±112 Vdc
Mounting DDM+ high-density shelf
HDSL Line Code 784 kbps 2B1Q
HDSL Output +13.5 dBm ±0.5 dB, 135 Ω
Maximum Provisioning Loss 35 dB at 196 kHz, 135 Ω
DS1 Line Rate 1.544 Mbps ±200 bps
DS1 Line Format Alternate Mark Inversion (AMI) or Bipolar with
8-Zero Substitution (B8ZS)
DS1 Frame Format Extended SuperFrame (ESF), SuperFrame (SF),
or THRU
DSX-1 Pulse Output 6 V pk-pk, pre-equalized for 0 to 655 feet of ABAM
cable
DSX-1 Input Level +1.5 to -7.5 dB DSX
INSTALLATION
To ensure proper installation of the HLU-388 List 5D:
1Lift the front panel and align the HLU-388 List 5D with the shelf rails.
2Slide the unit in and press the front panel down to secure.
POWER-UP SEQUENCE
When the HLU powers up, the four-character display illuminates and reports status
messages. If the HLU is not communicating with the next span device, the following
occurs:
1Alarm and diagnostic messages display (see the Front Panel Alarm Messages and
Front Panel Diagnostic Messages tables inside), followed by the SELF TEST
message.
2The Status LED turns yellow, indicating it has entered self-test mode.
If the HLU is communicating with the next span device, the following occurs:
1The Status LED flashes green while acquiring each device in the system, and
turns a steady green when the entire system is operating without any alarms.
2The four-character display reports margin (signal-to-noise ratio) readings and
insertion loss.
3If the status LED is not solid green, the display reports alarm conditions (see the
Front Panel Alarm Messages table inside).
PROVISIONING
1Access the Maintenance Terminal screens by pressing several
times.
aSet the date and time (select Set Clock from the Main Menu).
bSet the circuit IDs (select View System Inventory).
2Access the System Settings selection on the Main Menu to change the default
settings of any system parameters.
3Access the View Troubleshooting screen to view a graphical analysis of any
potential system problems.
4When the HLU is successfully installed and provisioned, clear Span Status,
Performance Data, Performance History, and Alarm History screens to ensure
accurate data and alarm reporting.
Continued
SPACEBAR
Þ
´,.E¶9\¨
1214379
September 15, 1999
Product Catalog: HLU-388 L5D
CLEI: T1L2B60A
Document: 350-388-154-06, Issue 6
5D
HLU-388 LIST 5D
LINE UNIT
QUICK INSTALLATION

HiGain
HiGain
FCC Class A Compliance
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the user will be
required to correct the interference at his own expense.
Limited Warranty
Product warranty is determined by your service agreement. Contact your sales representative or
Customer Service for details.
Modifications
Any changes or modifications made to this device that are not expressly approved by ADC DSL
Systems, Inc. voids the user's warranty.
All wiring external to the products should follow the provisions of the current edition of the National
Electrical Code.
Standards Compliance
This equipment has been tested and verified to comply with the applicable sections of the following
safety standards:
 GR 63-CORE - Network Equipment-Building System (NEBS) Requirements
 GR 1089-CORE - Electromagnetic Compatibility and Electrical Safety
 Binational standard, UL-1950/CSA-C22.2 No. 950-95: Safety of Information Technology
Equipment
Trademark Information
ADC is a registered trademark of ADC Telecommunications, Inc. HiGain is a registered trademark of
ADC DSL Systems, Inc. Other product names mentioned in this installation guide are used for
identification purposes only and may be trademarks or registered trademarks of their respective
companies.
Copyright Information
© 2002 ADC DSL Systems, Inc. All rights reserved. Information contained in this document is 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.
ADC DSL Systems, Inc.
14402 Franklin Avenue
Tustin, CA 92780-7013
Tel: [phone]
Fax: [phone]
Technical Assistance
Tel: [phone]
Tel: [phone]
Fax: [phone]
DNV C ertificatio n, Inc.
REGISTERED FIRM
ISO 9001/TL 9000
HLU-388 LIST 5D
The HiGain®Line Unit HLU-388 List 5D is the Central Office (CO) side of a
repeaterless, T1 transmission system. 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 24 (American Wire Gauge) AWG or 9,000 feet of
26 AWG wire, including bridged taps. This line unit can be used in applications with
or without HiGain Doubler Units (HDUs).
FEATURES
SPECIFICATIONS
•Front panel status LED, four-character status
display •Payload(PL)orHiGainGeneric(HG)loopback source identification
•Ultra low wander •Reduced power consumption
•Five-span range with four doublers
(60 kft, 24 AWG) •Low line-power option (-140 Vdc) for circuits with a single doubler
•Selectable power feed modes •Bit Error Rate (BER) alarm options
•Loss of Signal (LOS)/Alarm Indicator Signal
(AIS) payload alarm option •Bipolar Violation Transparency (BPVT) options
•Additional screens for inventory and
troubleshooting •Grounded loop detection
Operating Temperature -40 °F to 149 °F (-40 °C to + 65°C)
Operating Humidity 5% to 95% non-condensing
HDSL Span Voltage -140 or ±112 Vdc
Mounting DDM+ high-density shelf
HDSL Line Code 784 kbps 2B1Q
HDSL Output +13.5 dBm ±0.5 dB, 135 Ω
Maximum Provisioning Loss 35 dB at 196 kHz, 135 Ω
DS1 Line Rate 1.544 Mbps ±200 bps
DS1 Line Format Alternate Mark Inversion (AMI) or Bipolar with
8-Zero Substitution (B8ZS)
DS1 Frame Format Extended SuperFrame (ESF), SuperFrame (SF),
or THRU
DSX-1 Pulse Output 6 V pk-pk, pre-equalized for 0 to 655 feet of ABAM
cable
DSX-1 Input Level +1.5 to -7.5 dB DSX
INSTALLATION
To ensure proper installation of the HLU-388 List 5D:
1Lift the front panel and align the HLU-388 List 5D with the shelf rails.
2Slide the unit in and press the front panel down to secure.
POWER-UP SEQUENCE
When the HLU powers up, the four-character display illuminates and reports status
messages. If the HLU is not communicating with the next span device, the following
occurs:
1Alarm and diagnostic messages display (see the Front Panel Alarm Messages and
Front Panel Diagnostic Messages tables inside), followed by the SELF TEST
message.
2The Status LED turns yellow, indicating it has entered self-test mode.
If the HLU is communicating with the next span device, the following occurs:
1The Status LED flashes green while acquiring each device in the system, and
turns a steady green when the entire system is operating without any alarms.
2The four-character display reports margin (signal-to-noise ratio) readings and
insertion loss.
3If the status LED is not solid green, the display reports alarm conditions (see the
Front Panel Alarm Messages table inside).
PROVISIONING
1Access the Maintenance Terminal screens by pressing several
times.
aSet the date and time (select Set Clock from the Main Menu).
bSet the circuit IDs (select View System Inventory).
2Access the System Settings selection on the Main Menu to change the default
settings of any system parameters.
3Access the View Troubleshooting screen to view a graphical analysis of any
potential system problems.
4When the HLU is successfully installed and provisioned, clear Span Status,
Performance Data, Performance History, and Alarm History screens to ensure
accurate data and alarm reporting.
Continued
SPACEBAR
Þ
´,.E¶9\¨
1214379
September 15, 1999
Product Catalog: HLU-388 L5D
CLEI: T1L2B60A
Document: 350-388-154-06, Issue 6
5D
HLU-388 LIST 5D
LINE UNIT
QUICK INSTALLATION

LOOPBACK TESTING
Initiate loopback testing from the HiGain maintenance menus or use the MODE and SEL buttons. The inband codes shown below can be sent by a test set.
List number (HLU version number)
RS-232 Craft port
Bantam 210 jack provides bidirectional communication between the unit and an external terminal to allow configuration and performance monitoring through the maintenance terminal menus. (Use adapter, part number 120-1035-01, for jack.)
CLEI code label
M
A
R
G
I
N
(dB)
HLU-388
HiGain HD
L
RS
232
STATUS
SETUP
MODE SEL
106 105 104 103 102 101 100
DSX-1RCV
DSX-1XMT
HDSL2 HDSL1
205
204
203
202
201
200
119 118 117 116 115 114 113 112 111 110
Ground Ground
Frameground Fusealarm* Ring1 Ring1 Tip1 Tip1 (Mgmt.bus) Ring Ring Tip Tip (Factoryburn-in)
-48Vdc
219
218
217
216
215
214
213
212
211
210
209
208
207
206
109 108 107
* Fuse alarm is normally floating (0 to 80 Vdc maximum)
and at -48 Vdc (10 mA maximum) when activated.
Four-character display
Displays status, provisioning, and alarm messages. See tables below for a list of message descriptions.
Status LED
Reports the following conditions:
Self Test is in process or a CREM or NLOC loop- back is in effect
Green LED Normal operation Flashing Green LED HDSL acquisition Red LED Fuse alarm Flashing Red LED System alarm Yellow LED
FlashingYellow LED
Configuration number
System is in ARM mode
System option buttons (for manual setting of system parameters)
Use MODE and SEL to manually modify user options, initiate loopbacks, and display DSX-1 line parameters.
1 2 3 4
Press the MODE button for 2 seconds and release.
The front panel alternately displays the first
system parameter and its current setting. Press SEL to step through all possible system settings for the displayed parameter. Press MODE to update the parameter and advance to the next parameter. After scrolling through all the parameters, press SEL to confirm changes when prompted with a CONF YES message, or press MODE to cancel all changes.
5D
Table 1. A5LB Special Loopback Commands
Loopback Inband Code Description ARM 11000. . . NI LPBK (2-in-5 arming code) DISARM 11100. . . IR LPDN (3-5 disarming code) NLOC and CREM D3D3 IOR LPBK (231 ± 2) NDU1 and CDU1 C741 ILR-1 LPBK (10 bit errors) NDU2 and CDU2 C754 LR-20 LPBK (200 bit errors) NDU3 and CDU3 C743 ILR-3 LPBK (30 bit errors) NDU4 and CDU4 C744 ILR-4 LPBK (40 bit errors) NREM and CLOC C742 ILR-2 LPBK (20 bit errors)
For more detailed information about the Maintenance Terminal screens, provisioning, and loopback mode testing, refer to the HLU-388 List 5D technical practice, document number 150-388-154-xx. It can be downloaded from the Customer Site portion of the ADC Web page at www.adc.com. To order a hard copy, please contact your sales representative.
Table 2. Front-Panel Alarm Messages(a)
(a) Alarm (ALRM) displays prior to an alarm message. Pressing the SEL button initiates an Alarm Cutoff (ACO)
message.
Message Description LOSW Indicates that one of the HDSL loops has lost sync. LLOS Indicates that no signal is detected at the DSX-1 input to the HLU. RLOS Indicates that no signal is detected at the DS1 input to the HRU. BER A system Bit Error Rate alarm is in effect. MAL1 or MAL2 The margin on HDSL Loop 1 or Loop 2 has dropped below the threshold set by the user. NONE No alarm present.
Table 3. System Configuration Codes(a)
(a) To view system configuration codes, press the MODE button for 3 or more seconds.
Code Description VER xxxx The release revision of the firmware (appears during the System Settings review mode). LIST xxxx The model number of the product (appears during the System Settings review mode).
FRM xxxx Indicates the type of frame pattern being received from the DSX-1, where xxxx is SF,
ESF, UNFR, or NONE).
CODE xxxx The line code setting, where xxxx is Alternate Mark Inversion (AMI) or Bipolar with
8-Zero Substitution (B8ZS).
PLEV xxxx Indicates the HDSL line voltage in its LOW (-140 Vdc), HIGH (±112 Vdc), or DIS
(disabled) state.
Network Customer
Premises
HLU HDU1 HDU2 HRU
NLOC NDU1 NDU2 NREM
SMJK TLOS
CREM CDU1 CDU4
CDU2 CLOC
HDU3 HDU4
NDU3 NDU4CDU3
D3D3 C741 C754 C743 C744 C742
A5LB Addressable Repeater Loopback Commands
Table 4. Front Panel Diagnostic Messages
Message Description (normal operating messages in bold) 1=xx or 2=yy Indicates the power of the received HDSL signal on each loop relative to noise.Any
value of 06 (dB) or greater is adequate for reliable system operation.
ACQ1 or ACQ2 The multiplexers of the HLU and the HRU, or the first doubler, are trying to establish
synchronization over Loop 1 or Loop 2 of Span 1.
AnL1 or AnL2 The multiplexers of the two devices on Span nare trying to establish synchronization
with each other on Loop 1 or Loop 2, where nis the number of the span.
BAD RT? The HLU is not receiving any response from the HRU. FERR Framing bit error occurred at HLU DSX-1 input. H1ES or H2ES HLU HDSL Loop 1 or Loop 2 CRC error. nHDU Number (n) of doublers in the circuit.
INSL xxDB The maximum Insertion Loss (INSL) message appears followed by xxDB, where xx is
the maximum insertion in dB of all spans and loops.
LBPV A local bipolar violation has been received at the DSX-1 input to the HLU-388 List 5D. MNGD The HLU is under control of the HMU-319 network management unit. PWR FEED GND One of the HDSL loops has been grounded. PWR FEED ON Indicates that the HDSL loops are not grounded or shorted. PWR FEED OFF HDSL span power has been turned off. PWR FEED SHRT Indicates a short between the two HDSL pairs or the inability of the HRU to
communicate with the HLU.
SELF TEST The HLU is in a self-test mode. This occurs every power on/off cycle. SIG1 or SIG2 The transceivers of the HLU and HRU, or first doubler, are trying to establish contact
with each other on Loop 1 or Loop 2 of Span 1.
SnL1 or SnL2 The transceivers of the two devices on Span nare trying to establish contact with each
other on Loop 1 or Loop 2, where nis the numberof the span.
TLOS HRU is in a logic loopback state caused by a loss of its T1 input from the CI.
Table 5. System Settings
Display Code Description (default values in bold) EQL Sets the equalizer to DSX-1 for: 0 (0 to 133 ft.), 133 (133 to 266 ft.), 266 (266 to 399 ft.),
399 (399 to 533 ft.), 533 (533 to 655 ft.).
LBPK Enables (ENA) or disables (DIS) all inband SMJK loopback commands. PWRF DIS = disables HDSL powering.
LOW = HDSL line voltage at -140 Vdc maximum. AUTO = automatically switches between -140 Vdc for nondoubler applications and ±112 Vdc for doubler applications. HIGH = ±112 Vdc for all applications.
BERT NONE = prevents generation of a system alarm due to excessive BER
1E-6 or1E-7 = alarm activateswhen BER threshold exceeds 10-6 or 10- 7, respectively.
LBTO Loopback timeout = NONE, 20, 60, 120 minutes. LNCD Line code = places the HLU and HRU in B8ZS or AMI mode. SAIS Enables (ENA) or disables (DIS) NREM/SMJK loopback mode. MARG 0 to 15 dB; default is 4dB; can only be set through the Maintenance Terminal. RDA Enables (ENA) or disables (DIS) remote DS1 LOS at HRU input. ALMP Enables line to output an (AIS) payload of all ones or an (LOS) condition. RTPV Enables (ENA) or disables (DIS) remote provisioning. BPVT Enables (ENA) or disables (DIS) bipolar violation transparency (BVP). CONF YES = confirms that all operating modes are to be updated to their current selections.
NO = prevents the most recently selected operating mode selection from being updated.

LOOPBACK TESTING
Initiate loopback testing from the HiGain maintenance menus or use the MODE and SEL
buttons. The inband codes shown below can be sent by a test set.
List number (HLU version number)
RS-232 Craft port
Bantam 210 jack provides bidirectional communication
between the unit and an external terminal to allow
configuration and performance monitoring through the
maintenance terminal menus. (Use adapter,
part number 120-1035-01, for jack.)
CLEI code label
M
A
R
G
I
N
(dB)
HLU-388
HiGain HD
L
RS
232
STATUS
SETUP
MODE SEL
106
105
104
103
102
101
100
DSX-1RCV
DSX-1XMT
HDSL2
HDSL1
205
204
203
202
201
200
119
118
117
116
115
114
113
112
111
110
Ground Ground
Frameground
Fusealarm*
Ring1
Ring1
Tip1
Tip1
(Mgmt.bus)
Ring
Ring
Tip
Tip
(Factoryburn-in)
-48Vdc
219
218
217
216
215
214
213
212
211
210
209
208
207
206
109
108
107
* Fuse alarm is normally floating (0 to 80 Vdc maximum)
and at -48 Vdc (10 mA maximum) when activated.
Four-character display
Displays status, provisioning, and
alarm messages. See tables below
for a list of message descriptions.
Status LED
Reports the following conditions:
Self Test is in process or
a CREM or NLOC loop-
back is in effect
Green LED Normal operation
Flashing Green LED HDSL acquisition
Red LED Fuse alarm
Flashing Red LED System alarm
Yellow LED
FlashingYellow LED
Configuration number
System is in ARM mode
System option buttons (for manual setting of
system parameters)
Use MODE and SEL to manually modify user options,
initiate loopbacks, and display DSX-1 line parameters.
1
2
3
4
Press the MODE button for 2 seconds and release.
The front panel alternately displays the first
system parameter and its current setting.
Press SEL to step through all possible system
settings for the displayed parameter.
Press MODE to update the parameter and advance
to the next parameter.
After scrolling through all the parameters, press SEL
to confirm changes when prompted with a CONF YES
message, or press MODE to cancel all changes.
5D
Table 1. A5LB Special Loopback Commands
Loopback Inband Code Description
ARM 11000. . . NI LPBK (2-in-5 arming code)
DISARM 11100. . . IR LPDN (3-5 disarming code)
NLOC and CREM D3D3 IOR LPBK (231 ± 2)
NDU1 and CDU1 C741 ILR-1 LPBK (10 bit errors)
NDU2 and CDU2 C754 LR-20 LPBK (200 bit errors)
NDU3 and CDU3 C743 ILR-3 LPBK (30 bit errors)
NDU4 and CDU4 C744 ILR-4 LPBK (40 bit errors)
NREM and CLOC C742 ILR-2 LPBK (20 bit errors)
For more detailed information about the Maintenance Terminal
screens, provisioning, and loopback mode testing, refer to the
HLU-388 List 5D technical practice, document number
150-388-154-xx. It can be downloaded from the Customer Site portion
of the ADC Web page at www.adc.com. To order a hard copy, please
contact your sales representative.
Table 2. Front-Panel Alarm Messages(a)
(a) Alarm (ALRM) displays prior to an alarm message. Pressing the SEL button initiates an Alarm Cutoff (ACO)
message.
Message Description
LOSW Indicates that one of the HDSL loops has lost sync.
LLOS Indicates that no signal is detected at the DSX-1 input to the HLU.
RLOS Indicates that no signal is detected at the DS1 input to the HRU.
BER A system Bit Error Rate alarm is in effect.
MAL1 or MAL2 The margin on HDSL Loop 1 or Loop 2 has dropped below the threshold set by the user.
NONE No alarm present.
Table 3. System Configuration Codes(a)
(a) To view system configuration codes, press the MODE button for 3 or more seconds.
Code Description
VER xxxx The release revision of the firmware (appears during the System Settings review mode).
LIST xxxx The model number of the product (appears during the System Settings review mode).
FRM xxxx Indicates the type of frame pattern being received from the DSX-1, where xxxx is SF,
ESF, UNFR, or NONE).
CODE xxxx The line code setting, where xxxx is Alternate Mark Inversion (AMI) or Bipolar with
8-Zero Substitution (B8ZS).
PLEV xxxx Indicates the HDSL line voltage in its LOW (-140 Vdc), HIGH (±112 Vdc), or DIS
(disabled) state.
Network Customer
Premises
HLU HDU1 HDU2 HRU
NLOC NDU1 NDU2 NREM
SMJK
TLOS
CREM CDU1 CDU4
CDU2 CLOC
HDU3 HDU4
NDU3 NDU4CDU3
D3D3 C741 C754 C743 C744 C742
A5LB Addressable Repeater Loopback Commands
Table 4. Front Panel Diagnostic Messages
Message Description (normal operating messages in bold)
1=xx or 2=yy Indicates the power of the received HDSL signal on each loop relative to noise.Any
value of 06 (dB) or greater is adequate for reliable system operation.
ACQ1 or ACQ2 The multiplexers of the HLU and the HRU, or the first doubler, are trying to establish
synchronization over Loop 1 or Loop 2 of Span 1.
AnL1 or AnL2 The multiplexers of the two devices on Span nare trying to establish synchronization
with each other on Loop 1 or Loop 2, where nis the number of the span.
BAD RT? The HLU is not receiving any response from the HRU.
FERR Framing bit error occurred at HLU DSX-1 input.
H1ES or H2ES HLU HDSL Loop 1 or Loop 2 CRC error.
nHDU Number (n) of doublers in the circuit.
INSL xxDB The maximum Insertion Loss (INSL) message appears followed by xxDB, where xx is
the maximum insertion in dB of all spans and loops.
LBPV A local bipolar violation has been received at the DSX-1 input to the HLU-388 List 5D.
MNGD The HLU is under control of the HMU-319 network management unit.
PWR FEED GND One of the HDSL loops has been grounded.
PWR FEED ON Indicates that the HDSL loops are not grounded or shorted.
PWR FEED OFF HDSL span power has been turned off.
PWR FEED SHRT Indicates a short between the two HDSL pairs or the inability of the HRU to
communicate with the HLU.
SELF TEST The HLU is in a self-test mode. This occurs every power on/off cycle.
SIG1 or SIG2 The transceivers of the HLU and HRU, or first doubler, are trying to establish contact
with each other on Loop 1 or Loop 2 of Span 1.
SnL1 or SnL2 The transceivers of the two devices on Span nare trying to establish contact with each
other on Loop 1 or Loop 2, where nis the numberof the span.
TLOS HRU is in a logic loopback state caused by a loss of its T1 input from the CI.
Table 5. System Settings
Display Code Description (default values in bold)
EQL Sets the equalizer to DSX-1 for: 0 (0 to 133 ft.), 133 (133 to 266 ft.), 266 (266 to 399 ft.),
399 (399 to 533 ft.), 533 (533 to 655 ft.).
LBPK Enables (ENA) or disables (DIS) all inband SMJK loopback commands.
PWRF DIS = disables HDSL powering.
LOW = HDSL line voltage at -140 Vdc maximum.
AUTO = automatically switches between -140 Vdc for nondoubler applications and
±112 Vdc for doubler applications.
HIGH = ±112 Vdc for all applications.
BERT NONE = prevents generation of a system alarm due to excessive BER
1E-6 or1E-7 = alarm activateswhen BER threshold exceeds 10-6 or 10- 7, respectively.
LBTO Loopback timeout = NONE, 20, 60, 120 minutes.
LNCD Line code = places the HLU and HRU in B8ZS or AMI mode.
SAIS Enables (ENA) or disables (DIS) NREM/SMJK loopback mode.
MARG 0 to 15 dB; default is 4dB; can only be set through the Maintenance Terminal.
RDA Enables (ENA) or disables (DIS) remote DS1 LOS at HRU input.
ALMP Enables line to output an (AIS) payload of all ones or an (LOS) condition.
RTPV Enables (ENA) or disables (DIS) remote provisioning.
BPVT Enables (ENA) or disables (DIS) bipolar violation transparency (BVP).
CONF YES = confirms that all operating modes are to be updated to their current selections.
NO = prevents the most recently selected operating mode selection from being updated.

LOOPBACK TESTING
Initiate loopback testing from the HiGain maintenance menus or use the MODE and SEL
buttons. The inband codes shown below can be sent by a test set.
List number (HLU version number)
RS-232 Craft port
Bantam 210 jack provides bidirectional communication
between the unit and an external terminal to allow
configuration and performance monitoring through the
maintenance terminal menus. (Use adapter,
part number 120-1035-01, for jack.)
CLEI code label
M
A
R
G
I
N
(dB)
HLU-388
HiGain HD
L
RS
232
STATUS
SETUP
MODE SEL
106
105
104
103
102
101
100
DSX-1RCV
DSX-1XMT
HDSL2
HDSL1
205
204
203
202
201
200
119
118
117
116
115
114
113
112
111
110
Ground Ground
Frameground
Fusealarm*
Ring1
Ring1
Tip1
Tip1
(Mgmt.bus)
Ring
Ring
Tip
Tip
(Factoryburn-in)
-48Vdc
219
218
217
216
215
214
213
212
211
210
209
208
207
206
109
108
107
* Fuse alarm is normally floating (0 to 80 Vdc maximum)
and at -48 Vdc (10 mA maximum) when activated.
Four-character display
Displays status, provisioning, and
alarm messages. See tables below
for a list of message descriptions.
Status LED
Reports the following conditions:
Self Test is in process or
a CREM or NLOC loop-
back is in effect
Green LED Normal operation
Flashing Green LED HDSL acquisition
Red LED Fuse alarm
Flashing Red LED System alarm
Yellow LED
FlashingYellow LED
Configuration number
System is in ARM mode
System option buttons (for manual setting of
system parameters)
Use MODE and SEL to manually modify user options,
initiate loopbacks, and display DSX-1 line parameters.
1
2
3
4
Press the MODE button for 2 seconds and release.
The front panel alternately displays the first
system parameter and its current setting.
Press SEL to step through all possible system
settings for the displayed parameter.
Press MODE to update the parameter and advance
to the next parameter.
After scrolling through all the parameters, press SEL
to confirm changes when prompted with a CONF YES
message, or press MODE to cancel all changes.
5D
Table 1. A5LB Special Loopback Commands
Loopback Inband Code Description
ARM 11000. . . NI LPBK (2-in-5 arming code)
DISARM 11100. . . IR LPDN (3-5 disarming code)
NLOC and CREM D3D3 IOR LPBK (231 ± 2)
NDU1 and CDU1 C741 ILR-1 LPBK (10 bit errors)
NDU2 and CDU2 C754 LR-20 LPBK (200 bit errors)
NDU3 and CDU3 C743 ILR-3 LPBK (30 bit errors)
NDU4 and CDU4 C744 ILR-4 LPBK (40 bit errors)
NREM and CLOC C742 ILR-2 LPBK (20 bit errors)
For more detailed information about the Maintenance Terminal
screens, provisioning, and loopback mode testing, refer to the
HLU-388 List 5D technical practice, document number
150-388-154-xx. It can be downloaded from the Customer Site portion
of the ADC Web page at www.adc.com. To order a hard copy, please
contact your sales representative.
Table 2. Front-Panel Alarm Messages(a)
(a) Alarm (ALRM) displays prior to an alarm message. Pressing the SEL button initiates an Alarm Cutoff (ACO)
message.
Message Description
LOSW Indicates that one of the HDSL loops has lost sync.
LLOS Indicates that no signal is detected at the DSX-1 input to the HLU.
RLOS Indicates that no signal is detected at the DS1 input to the HRU.
BER A system Bit Error Rate alarm is in effect.
MAL1 or MAL2 The margin on HDSL Loop 1 or Loop 2 has dropped below the threshold set by the user.
NONE No alarm present.
Table 3. System Configuration Codes(a)
(a) To view system configuration codes, press the MODE button for 3 or more seconds.
Code Description
VER xxxx The release revision of the firmware (appears during the System Settings review mode).
LIST xxxx The model number of the product (appears during the System Settings review mode).
FRM xxxx Indicates the type of frame pattern being received from the DSX-1, where xxxx is SF,
ESF, UNFR, or NONE).
CODE xxxx The line code setting, where xxxx is Alternate Mark Inversion (AMI) or Bipolar with
8-Zero Substitution (B8ZS).
PLEV xxxx Indicates the HDSL line voltage in its LOW (-140 Vdc), HIGH (±112 Vdc), or DIS
(disabled) state.
Network Customer
Premises
HLU HDU1 HDU2 HRU
NLOC NDU1 NDU2 NREM
SMJK
TLOS
CREM CDU1 CDU4
CDU2 CLOC
HDU3 HDU4
NDU3 NDU4CDU3
D3D3 C741 C754 C743 C744 C742
A5LB Addressable Repeater Loopback Commands
Table 4. Front Panel Diagnostic Messages
Message Description (normal operating messages in bold)
1=xx or 2=yy Indicates the power of the received HDSL signal on each loop relative to noise.Any
value of 06 (dB) or greater is adequate for reliable system operation.
ACQ1 or ACQ2 The multiplexers of the HLU and the HRU, or the first doubler, are trying to establish
synchronization over Loop 1 or Loop 2 of Span 1.
AnL1 or AnL2 The multiplexers of the two devices on Span nare trying to establish synchronization
with each other on Loop 1 or Loop 2, where nis the number of the span.
BAD RT? The HLU is not receiving any response from the HRU.
FERR Framing bit error occurred at HLU DSX-1 input.
H1ES or H2ES HLU HDSL Loop 1 or Loop 2 CRC error.
nHDU Number (n) of doublers in the circuit.
INSL xxDB The maximum Insertion Loss (INSL) message appears followed by xxDB, where xx is
the maximum insertion in dB of all spans and loops.
LBPV A local bipolar violation has been received at the DSX-1 input to the HLU-388 List 5D.
MNGD The HLU is under control of the HMU-319 network management unit.
PWR FEED GND One of the HDSL loops has been grounded.
PWR FEED ON Indicates that the HDSL loops are not grounded or shorted.
PWR FEED OFF HDSL span power has been turned off.
PWR FEED SHRT Indicates a short between the two HDSL pairs or the inability of the HRU to
communicate with the HLU.
SELF TEST The HLU is in a self-test mode. This occurs every power on/off cycle.
SIG1 or SIG2 The transceivers of the HLU and HRU, or first doubler, are trying to establish contact
with each other on Loop 1 or Loop 2 of Span 1.
SnL1 or SnL2 The transceivers of the two devices on Span nare trying to establish contact with each
other on Loop 1 or Loop 2, where nis the numberof the span.
TLOS HRU is in a logic loopback state caused by a loss of its T1 input from the CI.
Table 5. System Settings
Display Code Description (default values in bold)
EQL Sets the equalizer to DSX-1 for: 0 (0 to 133 ft.), 133 (133 to 266 ft.), 266 (266 to 399 ft.),
399 (399 to 533 ft.), 533 (533 to 655 ft.).
LBPK Enables (ENA) or disables (DIS) all inband SMJK loopback commands.
PWRF DIS = disables HDSL powering.
LOW = HDSL line voltage at -140 Vdc maximum.
AUTO = automatically switches between -140 Vdc for nondoubler applications and
±112 Vdc for doubler applications.
HIGH = ±112 Vdc for all applications.
BERT NONE = prevents generation of a system alarm due to excessive BER
1E-6 or1E-7 = alarm activateswhen BER threshold exceeds 10-6 or 10- 7, respectively.
LBTO Loopback timeout = NONE, 20, 60, 120 minutes.
LNCD Line code = places the HLU and HRU in B8ZS or AMI mode.
SAIS Enables (ENA) or disables (DIS) NREM/SMJK loopback mode.
MARG 0 to 15 dB; default is 4dB; can only be set through the Maintenance Terminal.
RDA Enables (ENA) or disables (DIS) remote DS1 LOS at HRU input.
ALMP Enables line to output an (AIS) payload of all ones or an (LOS) condition.
RTPV Enables (ENA) or disables (DIS) remote provisioning.
BPVT Enables (ENA) or disables (DIS) bipolar violation transparency (BVP).
CONF YES = confirms that all operating modes are to be updated to their current selections.
NO = prevents the most recently selected operating mode selection from being updated.

HiGain
HiGain
FCC Class A Compliance
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the user will be
required to correct the interference at his own expense.
Limited Warranty
Product warranty is determined by your service agreement. Contact your sales representative or
Customer Service for details.
Modifications
Any changes or modifications made to this device that are not expressly approved by ADC DSL
Systems, Inc. voids the user's warranty.
All wiring external to the products should follow the provisions of the current edition of the National
Electrical Code.
Standards Compliance
This equipment has been tested and verified to comply with the applicable sections of the following
safety standards:
 GR 63-CORE - Network Equipment-Building System (NEBS) Requirements
 GR 1089-CORE - Electromagnetic Compatibility and Electrical Safety
 Binational standard, UL-1950/CSA-C22.2 No. 950-95: Safety of Information Technology
Equipment
Trademark Information
ADC is a registered trademark of ADC Telecommunications, Inc. HiGain is a registered trademark of
ADC DSL Systems, Inc. Other product names mentioned in this installation guide are used for
identification purposes only and may be trademarks or registered trademarks of their respective
companies.
Copyright Information
© 2002 ADC DSL Systems, Inc. All rights reserved. Information contained in this document is 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.
ADC DSL Systems, Inc.
14402 Franklin Avenue
Tustin, CA 92780-7013
Tel: [phone]
Fax: [phone]
Technical Assistance
Tel: [phone]
Tel: [phone]
Fax: [phone]
DNV C ertificatio n, Inc.
REGISTERED FIRM
ISO 9001/TL 9000
HLU-388 LIST 5D
The HiGain®Line Unit HLU-388 List 5D is the Central Office (CO) side of a
repeaterless, T1 transmission system. 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 24 (American Wire Gauge) AWG or 9,000 feet of
26 AWG wire, including bridged taps. This line unit can be used in applications with
or without HiGain Doubler Units (HDUs).
FEATURES
SPECIFICATIONS
•Front panel status LED, four-character status
display •Payload(PL)orHiGainGeneric(HG)loopback source identification
•Ultra low wander •Reduced power consumption
•Five-span range with four doublers
(60 kft, 24 AWG) •Low line-power option (-140 Vdc) for circuits with a single doubler
•Selectable power feed modes •Bit Error Rate (BER) alarm options
•Loss of Signal (LOS)/Alarm Indicator Signal
(AIS) payload alarm option •Bipolar Violation Transparency (BPVT) options
•Additional screens for inventory and
troubleshooting •Grounded loop detection
Operating Temperature -40 °F to 149 °F (-40 °C to + 65°C)
Operating Humidity 5% to 95% non-condensing
HDSL Span Voltage -140 or ±112 Vdc
Mounting DDM+ high-density shelf
HDSL Line Code 784 kbps 2B1Q
HDSL Output +13.5 dBm ±0.5 dB, 135 Ω
Maximum Provisioning Loss 35 dB at 196 kHz, 135 Ω
DS1 Line Rate 1.544 Mbps ±200 bps
DS1 Line Format Alternate Mark Inversion (AMI) or Bipolar with
8-Zero Substitution (B8ZS)
DS1 Frame Format Extended SuperFrame (ESF), SuperFrame (SF),
or THRU
DSX-1 Pulse Output 6 V pk-pk, pre-equalized for 0 to 655 feet of ABAM
cable
DSX-1 Input Level +1.5 to -7.5 dB DSX
INSTALLATION
To ensure proper installation of the HLU-388 List 5D:
1Lift the front panel and align the HLU-388 List 5D with the shelf rails.
2Slide the unit in and press the front panel down to secure.
POWER-UP SEQUENCE
When the HLU powers up, the four-character display illuminates and reports status
messages. If the HLU is not communicating with the next span device, the following
occurs:
1Alarm and diagnostic messages display (see the Front Panel Alarm Messages and
Front Panel Diagnostic Messages tables inside), followed by the SELF TEST
message.
2The Status LED turns yellow, indicating it has entered self-test mode.
If the HLU is communicating with the next span device, the following occurs:
1The Status LED flashes green while acquiring each device in the system, and
turns a steady green when the entire system is operating without any alarms.
2The four-character display reports margin (signal-to-noise ratio) readings and
insertion loss.
3If the status LED is not solid green, the display reports alarm conditions (see the
Front Panel Alarm Messages table inside).
PROVISIONING
1Access the Maintenance Terminal screens by pressing several
times.
aSet the date and time (select Set Clock from the Main Menu).
bSet the circuit IDs (select View System Inventory).
2Access the System Settings selection on the Main Menu to change the default
settings of any system parameters.
3Access the View Troubleshooting screen to view a graphical analysis of any
potential system problems.
4When the HLU is successfully installed and provisioned, clear Span Status,
Performance Data, Performance History, and Alarm History screens to ensure
accurate data and alarm reporting.
Continued
SPACEBAR
Þ
´,.E¶9\¨
1214379
September 15, 1999
Product Catalog: HLU-388 L5D
CLEI: T1L2B60A
Document: 350-388-154-06, Issue 6
5D
HLU-388 LIST 5D
LINE UNIT
QUICK INSTALLATION