ADC HiGain HRU-488 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
© 2000 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
THE HRU-488 LIST 1
The HiGain®Remote Unit HRU-488 List 1 functions as the remote end of a
repeaterless T1 transmission system. The HLU connects to a HiGain Line Unit (HLU)
High-bit-rate Digital Subscriber Line (HDSL), creating a system that provides 1.544
Mbps transmission on two unconditioned copper pairs over the full Carrier Service
Area (CSA) range. HiGain Doubler Units (HDUs) can also be used to extend the
range. The HRU-488 List 1 supports local powering only.
FEATURES
SPECIFICATIONS
•1.544 Mbps full-duplex transmission on two
unconditioned copper pairs
•Generic and addressable repeater loopback
activation codes
•Status Light Emitting Diodes (LEDs) for
Digital Signal Level 1 (DS1) and HDSL
•Lightning and power cross-protection on
HDSL and DS1 interfaces
•Craft port access for maintenance terminal
connection
•Local powering only with sealing current
option
•Double Dual Module Plus (DDM+) mechanics •Ultra-low wander
•Support for up to five spans •Fuse alarm circuit
•HiGain maintenance screens for inventory,
provisioning, troubleshooting, performance
monitoring, and reporting
•Two HDSL interfaces to HLU, HDU
Operating Temperature -40 °F to + 149 °F (-40 °C to + 65 °C)
Operating Humidity 5% to 95% non-condensing
Line Power Consumption 3.1 Watts
Electrical Protection Secondary surge and power cross-protection on
all DS1 and HDSL ports
Mounting DDM+ high-density shelf
HDSL Line Code 784 kbps 2B1Q (each loop)
HDSL Output +13.5 dBm ±0.5 dB, 135 Ω
DS1 Pulse Output 0 dB or -15 dB
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 Super Frame (ESF), Super Frame (SF),
or Unframed (UNFR)
INSTALLATION
1To set the simplex sealing current (SCURR), do one of the following:
•If the HRU-488 List 1 is to be used with an HDU-451 List 1, List 2, List 3,
or List 3B doubler, disable the simplex sealing current by placing the
SCURR switch in the up position. The HRU-488 sealing current circuit is
not compatible with these doublers.
•If the HRU-488 List 1 is to be used with the following compatible doublers,
enable the SCURR switch (down position).
–HDU-404, HDU-407, HDU-409
–HDU-437, HDU-439 List 1 or List 1B
–HDU-451 List 4 or List 4B
2To enable the Transmit Loss of Signal (TLOS) Loopback (LB), set the switch to
the down position.
3Set the Receive Level (RCVLEV) switch to the down (-15 dB) position or the up
(0 dB) position.
4Lift the front panel and slide the HRU-488 List 1 into the enclosure slot guides.
Push the unit back until properly seated in the backplane card-edge connector.
Continued Þ
RS
DCE
232
LIST 1
HRU 488
HiGain Rem Unit
ALM
LP1
LP2
ESF
SF
AMI
LBK
B8ZF
HRU-488 LIST 1
REMOTE UNIT
QUICK INSTALLATION
´,4L¶3_¨
1220443
March 21, 2000
Product Catalog: HRU-488 List 1
CLEI: T1L3KL7D
Document: 350-488-100-02, Issue 2

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
© 2000 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
THE HRU-488 LIST 1
The HiGain®Remote Unit HRU-488 List 1 functions as the remote end of a
repeaterless T1 transmission system. The HLU connects to a HiGain Line Unit (HLU)
High-bit-rate Digital Subscriber Line (HDSL), creating a system that provides 1.544
Mbps transmission on two unconditioned copper pairs over the full Carrier Service
Area (CSA) range. HiGain Doubler Units (HDUs) can also be used to extend the
range. The HRU-488 List 1 supports local powering only.
FEATURES
SPECIFICATIONS
•1.544 Mbps full-duplex transmission on two
unconditioned copper pairs
•Generic and addressable repeater loopback
activation codes
•Status Light Emitting Diodes (LEDs) for
Digital Signal Level 1 (DS1) and HDSL
•Lightning and power cross-protection on
HDSL and DS1 interfaces
•Craft port access for maintenance terminal
connection
•Local powering only with sealing current
option
•Double Dual Module Plus (DDM+) mechanics •Ultra-low wander
•Support for up to five spans •Fuse alarm circuit
•HiGain maintenance screens for inventory,
provisioning, troubleshooting, performance
monitoring, and reporting
•Two HDSL interfaces to HLU, HDU
Operating Temperature -40 °F to + 149 °F (-40 °C to + 65 °C)
Operating Humidity 5% to 95% non-condensing
Line Power Consumption 3.1 Watts
Electrical Protection Secondary surge and power cross-protection on
all DS1 and HDSL ports
Mounting DDM+ high-density shelf
HDSL Line Code 784 kbps 2B1Q (each loop)
HDSL Output +13.5 dBm ±0.5 dB, 135 Ω
DS1 Pulse Output 0 dB or -15 dB
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 Super Frame (ESF), Super Frame (SF),
or Unframed (UNFR)
INSTALLATION
1To set the simplex sealing current (SCURR), do one of the following:
•If the HRU-488 List 1 is to be used with an HDU-451 List 1, List 2, List 3,
or List 3B doubler, disable the simplex sealing current by placing the
SCURR switch in the up position. The HRU-488 sealing current circuit is
not compatible with these doublers.
•If the HRU-488 List 1 is to be used with the following compatible doublers,
enable the SCURR switch (down position).
–HDU-404, HDU-407, HDU-409
–HDU-437, HDU-439 List 1 or List 1B
–HDU-451 List 4 or List 4B
2To enable the Transmit Loss of Signal (TLOS) Loopback (LB), set the switch to
the down position.
3Set the Receive Level (RCVLEV) switch to the down (-15 dB) position or the up
(0 dB) position.
4Lift the front panel and slide the HRU-488 List 1 into the enclosure slot guides.
Push the unit back until properly seated in the backplane card-edge connector.
Continued Þ
RS
DCE
232
LIST 1
HRU 488
HiGain Rem Unit
ALM
LP1
LP2
ESF
SF
AMI
LBK
B8ZF
HRU-488 LIST 1
REMOTE UNIT
QUICK INSTALLATION
´,4L¶3_¨
1220443
March 21, 2000
Product Catalog: HRU-488 List 1
CLEI: T1L3KL7D
Document: 350-488-100-02, Issue 2

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
© 2000 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
THE HRU-488 LIST 1
The HiGain®Remote Unit HRU-488 List 1 functions as the remote end of a
repeaterless T1 transmission system. The HLU connects to a HiGain Line Unit (HLU)
High-bit-rate Digital Subscriber Line (HDSL), creating a system that provides 1.544
Mbps transmission on two unconditioned copper pairs over the full Carrier Service
Area (CSA) range. HiGain Doubler Units (HDUs) can also be used to extend the
range. The HRU-488 List 1 supports local powering only.
FEATURES
SPECIFICATIONS
•1.544 Mbps full-duplex transmission on two
unconditioned copper pairs
•Generic and addressable repeater loopback
activation codes
•Status Light Emitting Diodes (LEDs) for
Digital Signal Level 1 (DS1) and HDSL
•Lightning and power cross-protection on
HDSL and DS1 interfaces
•Craft port access for maintenance terminal
connection
•Local powering only with sealing current
option
•Double Dual Module Plus (DDM+) mechanics •Ultra-low wander
•Support for up to five spans •Fuse alarm circuit
•HiGain maintenance screens for inventory,
provisioning, troubleshooting, performance
monitoring, and reporting
•Two HDSL interfaces to HLU, HDU
Operating Temperature -40 °F to + 149 °F (-40 °C to + 65 °C)
Operating Humidity 5% to 95% non-condensing
Line Power Consumption 3.1 Watts
Electrical Protection Secondary surge and power cross-protection on
all DS1 and HDSL ports
Mounting DDM+ high-density shelf
HDSL Line Code 784 kbps 2B1Q (each loop)
HDSL Output +13.5 dBm ±0.5 dB, 135 Ω
DS1 Pulse Output 0 dB or -15 dB
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 Super Frame (ESF), Super Frame (SF),
or Unframed (UNFR)
INSTALLATION
1To set the simplex sealing current (SCURR), do one of the following:
•If the HRU-488 List 1 is to be used with an HDU-451 List 1, List 2, List 3,
or List 3B doubler, disable the simplex sealing current by placing the
SCURR switch in the up position. The HRU-488 sealing current circuit is
not compatible with these doublers.
•If the HRU-488 List 1 is to be used with the following compatible doublers,
enable the SCURR switch (down position).
–HDU-404, HDU-407, HDU-409
–HDU-437, HDU-439 List 1 or List 1B
–HDU-451 List 4 or List 4B
2To enable the Transmit Loss of Signal (TLOS) Loopback (LB), set the switch to
the down position.
3Set the Receive Level (RCVLEV) switch to the down (-15 dB) position or the up
(0 dB) position.
4Lift the front panel and slide the HRU-488 List 1 into the enclosure slot guides.
Push the unit back until properly seated in the backplane card-edge connector.
Continued Þ
RS
DCE
232
LIST 1
HRU 488
HiGain Rem Unit
ALM
LP1
LP2
ESF
SF
AMI
LBK
B8ZF
HRU-488 LIST 1
REMOTE UNIT
QUICK INSTALLATION
´,4L¶3_¨
1220443
March 21, 2000
Product Catalog: HRU-488 List 1
CLEI: T1L3KL7D
Document: 350-488-100-02, Issue 2

VERIFICATION
Once the HLU is installed, verify that it is operating properly by monitoring the Status LEDs on the front panel.
LOGGING ON TO THE MAIN MENU
The HLU supports remote login through a maintenance terminal (ASCII terminal or a PC running terminal emulation software) connected to the craft port on the HLU front panel. Remote login creates menus and screens for the HLU that are identical to those viewed at the HLU. Once logged on, you can access the Remote Terminal Main Menu screens to view system settings, initiate loopbacks, and provision the circuit. To log on and access the Remote Terminal Main Menu screens using a maintenance terminal: 1Press the several times to display the Remote Login screen. 2Press the key to view the HiGain Maintenance Terminal Screen. The Remote
Terminal Main Menu items are replications of the line unit screens. Depending on the HiGain Line Unit (HLU) attached to the HLU, remote provisioning may be available. Refer to the applicable HLU technical practice for details.
LOOPBACK TESTING
Initiate loopback testing from the HiGain maintenance menus or by using inband codes. The inband codes shown below can be sent by a test set.
106 105 104 103 102 101 100
DS1OUT
DS1IN
Loop2span
205
204
203
202
201
200
119 118 117 116 115 114 113 112 111 110
Ground Ground
Frameground
Fusealarm* Ring1 Tip1 Managementbus Ring Ring Ring Tip Tip Tip Factory use only (burn-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.
Card-Edge Connector
List number
RS-232 craft port
The Bantam 210 jack provides bidirectional communication between the HRU and a maintenance terminal for access to maintenance, provisioning, and performance screens. Use a Db9 to phone plug jack adapter, part number 120-1035-01, to connect a standard RS-232 Db-9 terminal cable between the serial port on a PC and the HRU craft port.
HRU 488
HiGain Rem Unit
LIST
ALM LP1 LP2 ESF SF AMI LBK B8ZS
RS
232
DCE
Configuration number
Front Panel
Pressing the button for 5 seconds activates a remote loopback towards the network, called a Network Remote Loopback (NREM).
The unit can be looped down by
either pressing the LPBK control button again for 5 seconds or by the standard loopdown inband messages.
Any
existing loopback is terminated before NREM is activated. Loopback control button
Modem settings: 1200-9600 baud 8 data bits No parity 1 stop bit Hardware flow control: NONE Terminal emulation: VT-100
Alarm LED
Loopback LED
HDSL LEDs
DS1 framing LEDs
DS1 code LEDs
1
HDSL
Loop1span
HDSL
Status LED Descriptions
LED Status Indicates Alarm (ALM) LED Shows alarm states for remote and local Loss of Signal (LOS).
Solid red Indicates an LOS condition at the HLU T1 input.
Blinking Indicates an LOS condition at the HLU T1 input.
HDSL LEDs Displays HDSL Loop 1 and Loop 2 conditions.
Solid green Indicates HDSL Loop 1 and Loop 2 are in sync.
Blinking once
per second Indicates the HDSL loop is trying to acquire sync.
Blinking 4 times
per second Indicates a margin alarm condition at the HRU on the last span.
Blinking 10 times
per second Indicates a Cyclical Redundancy Check (CRC) error on the HDSL loop.
OFF Indicates no activity on the HDSL loop.
DS1 Framing (FRM) LEDs (ESF and SF) Indications for framing patterns. If DS1 signals are not detected, the ESF, SF,
B8ZS, and AMI LEDs will not light.
ESF LED = Solid green Indicates Extended Super Frame (ESF). The LED blinks once per second when a
frame error is indicated.
SF LED = Solid green Indicates Super Frame (SF). The LED blinks once per second when a frame error
is indicated.
OFF Indicates unframed or no signal.
DS1 Code LEDs (B8ZS and AMI) Indications for DS1 code options. If DS1 signals are not detected, the ESF, SF,
B8ZS, and AMI LEDs will not light.
B8ZS LED = Solid green Indicates that the DS1 line code option is set to B8ZS or the option is set to AUTO
and an AMI line code is being received at the HRU DS1 input. The LED blinks once per second when a string of excessive zeros is detected.
AMI LED = Solid green Indicates that the user DS1 line code option is set to AMI or the option is set to
AUTO and an AMI line code is being received at the HRU DS1 input. This LED blinks once per second when a Bipolar Violation (BPV) is detected.
Loopback (LPBK) LED Shows loopback states to and from the network and to and from the Customer
Interface (CI).
Solid yellow Indicates Network Remote Loopback (NREM), SmartJack (SMJK), or Transmit
Loss of Signal (TLOS).
Blinking once
per second Indicates Customer Local Loopback (CLOC) loopback state.
Blinking 4 times per
second Indicates the HRU is in an Armed state.
For more detailed information about the maintenance terminal screens, provisioning, and loopback mode testing, download the appropriate line unit technical practice from the the ADC website at www.adc.com
.
SPACEBAR
ENTER
Remote Terminal Main Menu Items
Menu Item Function View Span Status Allows viewing of span status from the HLU to the HRU-488 (non-doubler
applications) and from any doubler spans (multi-span applications).
Set Clock Allows setting of time and date parameters at the HRU. (a)
(a) If the HLU does not have remote provisioning or its remote provisioning option is disabled, the HRU
cannot modify these settings.
System Settings Allows viewing and setting of all system settings.(a) Loopback Mode Allows system loopbacks to be initiated. View Performance Data Allows viewing of the Errored Seconds (ES) and Unavailable Seconds (UAS) for
the HLU to HRU-488 span (non-doubler applications) and any additional spans (doubler applications) in 15-minute intervals over a 24-hour time period.
View Performance History Allows viewing of the ES and UAS for the HLU to HRU-488 span (non-doubler
applications) and any additional spans (doubler applications) in 24-hour intervals over a 31-day period.
View Alarm History Allows viewing of alarm conditions for the HLU to HRU-488 span (non-doubler
applications) and any additional spans (doubler applications).
View System Inventory Displays the model, serial, and identification (ID) numbers of all units in the
circuit.
View Troubleshooting Provides a graphical analysis of the circuit and identifies problem areas. Remote Logoff Terminates the remote session.
GNLB Loopback Commands
Loopback Inband Code Description NLOC 1111000 DSX-1 signal is looped back to the network at the HLU. NDU1 110000 DSX-1 signal is looped back to the network at HDU1. NDU2 111000 DSX-1 signal is looped back to the network at HDU2. NDU3 1010001 DSX-1 signal is looped back to the network at HDU3. NDU4 1010010 DSX-1 signal is looped back to the network at HDU4. NREM 1110000 DSX-1 signal is looped back to the network at the HRU. SMJK 11000 DSX-1 signal is looped back to the network at the HRU SmartJack
module.
CLOC 1111100 Signal from customer is looped back to the customer at the HRU. CDU1 111100 Signal from customer is looped back to the customer at HDU1. CDU2 111110 Signal from customer is looped back to the customer at HDU2. CDU3 1011001 Signal from customer is looped back to the customer at HDU3. CDU4 1011010 Signal from customer is looped back to the customer at HDU4. CREM 1111110 Signal from customer is looped back to the customer at the HLU. Loopdown 11100 Deactivates any of the above loopbacks.
Network Customer
Pr
e
mi
ses
HLU HDU1 HDU2 HRU
NLOC NDU1 NDU2
NREM SMJK TLOS
CREM CDU1 CDU4CDU2 CLOC
HDU3 HDU4
NDU3 NDU4
CDU3

VERIFICATION
Once the HLU is installed, verify that it is operating properly by monitoring the Status
LEDs on the front panel.
LOGGING ON TO THE MAIN MENU
The HLU supports remote login through a maintenance terminal (ASCII terminal or a PC
running terminal emulation software) connected to the craft port on the HLU front panel.
Remote login creates menus and screens for the HLU that are identical to those viewed at
the HLU. Once logged on, you can access the Remote Terminal Main Menu screens to view
system settings, initiate loopbacks, and provision the circuit.
To log on and access the Remote Terminal Main Menu screens using a maintenance
terminal:
1Press the several times to display the Remote Login screen.
2Press the key to view the HiGain Maintenance Terminal Screen. The Remote
Terminal Main Menu items are replications of the line unit screens. Depending on the
HiGain Line Unit (HLU) attached to the HLU, remote provisioning may be available.
Refer to the applicable HLU technical practice for details.
LOOPBACK TESTING
Initiate loopback testing from the HiGain maintenance menus or by using inband codes.
The inband codes shown below can be sent by a test set.
106
105
104
103
102
101
100
DS1OUT
DS1IN
Loop2span
205
204
203
202
201
200
119
118
117
116
115
114
113
112
111
110
Ground Ground
Frameground
Fusealarm*
Ring1
Tip1
Managementbus
Ring
Ring
Ring
Tip
Tip
Tip
Factory use only (burn-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.
Card-Edge Connector
List number
RS-232 craft port
The Bantam 210 jack provides bidirectional communication
between the HRU and a maintenance terminal for access
to maintenance, provisioning, and performance screens.
Use a Db9 to phone plug jack adapter, part number 120-1035-01,
to connect a standard RS-232 Db-9 terminal cable between the
serial port on a PC and the HRU craft port.
HRU 488
HiGain Rem Unit
LIST
ALM
LP1
LP2
ESF
SF
AMI
LBK
B8ZS
RS
232
DCE
Configuration number
Front Panel
Pressing the button for 5 seconds activates
a remote loopback towards the network, called a
Network Remote Loopback (NREM).
The unit can be looped down by
either pressing the LPBK control button again
for 5 seconds or by the standard loopdown inband
messages.
Any
existing loopback is terminated before NREM
is activated.
Loopback control button
Modem settings:
1200-9600 baud
8 data bits
No parity
1 stop bit
Hardware flow control: NONE
Terminal emulation: VT-100
Alarm LED
Loopback LED
HDSL LEDs
DS1 framing LEDs
DS1 code LEDs
1
HDSL
Loop1span
HDSL
Status LED Descriptions
LED Status Indicates
Alarm (ALM) LED Shows alarm states for remote and local Loss of Signal (LOS).
Solid red Indicates an LOS condition at the HLU T1 input.
Blinking Indicates an LOS condition at the HLU T1 input.
HDSL LEDs Displays HDSL Loop 1 and Loop 2 conditions.
Solid green Indicates HDSL Loop 1 and Loop 2 are in sync.
Blinking once
per second Indicates the HDSL loop is trying to acquire sync.
Blinking 4 times
per second Indicates a margin alarm condition at the HRU on the last span.
Blinking 10 times
per second Indicates a Cyclical Redundancy Check (CRC) error on the HDSL loop.
OFF Indicates no activity on the HDSL loop.
DS1 Framing (FRM)
LEDs (ESF and SF) Indications for framing patterns. If DS1 signals are not detected, the ESF, SF,
B8ZS, and AMI LEDs will not light.
ESF LED = Solid green Indicates Extended Super Frame (ESF). The LED blinks once per second when a
frame error is indicated.
SF LED = Solid green Indicates Super Frame (SF). The LED blinks once per second when a frame error
is indicated.
OFF Indicates unframed or no signal.
DS1 Code LEDs
(B8ZS and AMI) Indications for DS1 code options. If DS1 signals are not detected, the ESF, SF,
B8ZS, and AMI LEDs will not light.
B8ZS LED = Solid green Indicates that the DS1 line code option is set to B8ZS or the option is set to AUTO
and an AMI line code is being received at the HRU DS1 input. The LED blinks once
per second when a string of excessive zeros is detected.
AMI LED = Solid green Indicates that the user DS1 line code option is set to AMI or the option is set to
AUTO and an AMI line code is being received at the HRU DS1 input. This LED
blinks once per second when a Bipolar Violation (BPV) is detected.
Loopback (LPBK) LED Shows loopback states to and from the network and to and from the Customer
Interface (CI).
Solid yellow Indicates Network Remote Loopback (NREM), SmartJack (SMJK), or Transmit
Loss of Signal (TLOS).
Blinking once
per second Indicates Customer Local Loopback (CLOC) loopback state.
Blinking 4 times per
second Indicates the HRU is in an Armed state.
For more detailed information about the maintenance terminal
screens, provisioning, and loopback mode testing, download the
appropriate line unit technical practice from the the ADC website at
www.adc.com .
SPACEBAR
ENTER
Remote Terminal Main Menu Items
Menu Item Function
View Span Status Allows viewing of span status from the HLU to the HRU-488 (non-doubler
applications) and from any doubler spans (multi-span applications).
Set Clock Allows setting of time and date parameters at the HRU. (a)
(a) If the HLU does not have remote provisioning or its remote provisioning option is disabled, the HRU
cannot modify these settings.
System Settings Allows viewing and setting of all system settings.(a)
Loopback Mode Allows system loopbacks to be initiated.
View Performance Data Allows viewing of the Errored Seconds (ES) and Unavailable Seconds (UAS) for
the HLU to HRU-488 span (non-doubler applications) and any additional spans
(doubler applications) in 15-minute intervals over a 24-hour time period.
View Performance
History Allows viewing of the ES and UAS for the HLU to HRU-488 span (non-doubler applications) and any additional spans (doubler applications) in 24-hour intervals
over a 31-day period.
View Alarm History Allows viewing of alarm conditions for the HLU to HRU-488 span (non-doubler
applications) and any additional spans (doubler applications).
View System Inventory Displays the model, serial, and identification (ID) numbers of all units in the
circuit.
View Troubleshooting Provides a graphical analysis of the circuit and identifies problem areas.
Remote Logoff Terminates the remote session.
GNLB Loopback Commands
Loopback Inband Code Description
NLOC 1111000 DSX-1 signal is looped back to the network at the HLU.
NDU1 110000 DSX-1 signal is looped back to the network at HDU1.
NDU2 111000 DSX-1 signal is looped back to the network at HDU2.
NDU3 1010001 DSX-1 signal is looped back to the network at HDU3.
NDU4 1010010 DSX-1 signal is looped back to the network at HDU4.
NREM 1110000 DSX-1 signal is looped back to the network at the HRU.
SMJK 11000 DSX-1 signal is looped back to the network at the HRU SmartJack
module.
CLOC 1111100 Signal from customer is looped back to the customer at the HRU.
CDU1 111100 Signal from customer is looped back to the customer at HDU1.
CDU2 111110 Signal from customer is looped back to the customer at HDU2.
CDU3 1011001 Signal from customer is looped back to the customer at HDU3.
CDU4 1011010 Signal from customer is looped back to the customer at HDU4.
CREM 1111110 Signal from customer is looped back to the customer at the HLU.
Loopdown 11100 Deactivates any of the above loopbacks.
Network Customer
Pr
e
mi
ses
HLU HDU1 HDU2 HRU
NLOC NDU1 NDU2
NREM
SMJK
TLOS
CREM CDU1 CDU4CDU2 CLOC
HDU3 HDU4
NDU3 NDU4
CDU3

VERIFICATION
Once the HLU is installed, verify that it is operating properly by monitoring the Status
LEDs on the front panel.
LOGGING ON TO THE MAIN MENU
The HLU supports remote login through a maintenance terminal (ASCII terminal or a PC
running terminal emulation software) connected to the craft port on the HLU front panel.
Remote login creates menus and screens for the HLU that are identical to those viewed at
the HLU. Once logged on, you can access the Remote Terminal Main Menu screens to view
system settings, initiate loopbacks, and provision the circuit.
To log on and access the Remote Terminal Main Menu screens using a maintenance
terminal:
1Press the several times to display the Remote Login screen.
2Press the key to view the HiGain Maintenance Terminal Screen. The Remote
Terminal Main Menu items are replications of the line unit screens. Depending on the
HiGain Line Unit (HLU) attached to the HLU, remote provisioning may be available.
Refer to the applicable HLU technical practice for details.
LOOPBACK TESTING
Initiate loopback testing from the HiGain maintenance menus or by using inband codes.
The inband codes shown below can be sent by a test set.
106
105
104
103
102
101
100
DS1OUT
DS1IN
Loop2span
205
204
203
202
201
200
119
118
117
116
115
114
113
112
111
110
Ground Ground
Frameground
Fusealarm*
Ring1
Tip1
Managementbus
Ring
Ring
Ring
Tip
Tip
Tip
Factory use only (burn-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.
Card-Edge Connector
List number
RS-232 craft port
The Bantam 210 jack provides bidirectional communication
between the HRU and a maintenance terminal for access
to maintenance, provisioning, and performance screens.
Use a Db9 to phone plug jack adapter, part number 120-1035-01,
to connect a standard RS-232 Db-9 terminal cable between the
serial port on a PC and the HRU craft port.
HRU 488
HiGain Rem Unit
LIST
ALM
LP1
LP2
ESF
SF
AMI
LBK
B8ZS
RS
232
DCE
Configuration number
Front Panel
Pressing the button for 5 seconds activates
a remote loopback towards the network, called a
Network Remote Loopback (NREM).
The unit can be looped down by
either pressing the LPBK control button again
for 5 seconds or by the standard loopdown inband
messages.
Any
existing loopback is terminated before NREM
is activated.
Loopback control button
Modem settings:
1200-9600 baud
8 data bits
No parity
1 stop bit
Hardware flow control: NONE
Terminal emulation: VT-100
Alarm LED
Loopback LED
HDSL LEDs
DS1 framing LEDs
DS1 code LEDs
1
HDSL
Loop1span
HDSL
Status LED Descriptions
LED Status Indicates
Alarm (ALM) LED Shows alarm states for remote and local Loss of Signal (LOS).
Solid red Indicates an LOS condition at the HLU T1 input.
Blinking Indicates an LOS condition at the HLU T1 input.
HDSL LEDs Displays HDSL Loop 1 and Loop 2 conditions.
Solid green Indicates HDSL Loop 1 and Loop 2 are in sync.
Blinking once
per second Indicates the HDSL loop is trying to acquire sync.
Blinking 4 times
per second Indicates a margin alarm condition at the HRU on the last span.
Blinking 10 times
per second Indicates a Cyclical Redundancy Check (CRC) error on the HDSL loop.
OFF Indicates no activity on the HDSL loop.
DS1 Framing (FRM)
LEDs (ESF and SF) Indications for framing patterns. If DS1 signals are not detected, the ESF, SF,
B8ZS, and AMI LEDs will not light.
ESF LED = Solid green Indicates Extended Super Frame (ESF). The LED blinks once per second when a
frame error is indicated.
SF LED = Solid green Indicates Super Frame (SF). The LED blinks once per second when a frame error
is indicated.
OFF Indicates unframed or no signal.
DS1 Code LEDs
(B8ZS and AMI) Indications for DS1 code options. If DS1 signals are not detected, the ESF, SF,
B8ZS, and AMI LEDs will not light.
B8ZS LED = Solid green Indicates that the DS1 line code option is set to B8ZS or the option is set to AUTO
and an AMI line code is being received at the HRU DS1 input. The LED blinks once
per second when a string of excessive zeros is detected.
AMI LED = Solid green Indicates that the user DS1 line code option is set to AMI or the option is set to
AUTO and an AMI line code is being received at the HRU DS1 input. This LED
blinks once per second when a Bipolar Violation (BPV) is detected.
Loopback (LPBK) LED Shows loopback states to and from the network and to and from the Customer
Interface (CI).
Solid yellow Indicates Network Remote Loopback (NREM), SmartJack (SMJK), or Transmit
Loss of Signal (TLOS).
Blinking once
per second Indicates Customer Local Loopback (CLOC) loopback state.
Blinking 4 times per
second Indicates the HRU is in an Armed state.
For more detailed information about the maintenance terminal
screens, provisioning, and loopback mode testing, download the
appropriate line unit technical practice from the the ADC website at
www.adc.com .
SPACEBAR
ENTER
Remote Terminal Main Menu Items
Menu Item Function
View Span Status Allows viewing of span status from the HLU to the HRU-488 (non-doubler
applications) and from any doubler spans (multi-span applications).
Set Clock Allows setting of time and date parameters at the HRU. (a)
(a) If the HLU does not have remote provisioning or its remote provisioning option is disabled, the HRU
cannot modify these settings.
System Settings Allows viewing and setting of all system settings.(a)
Loopback Mode Allows system loopbacks to be initiated.
View Performance Data Allows viewing of the Errored Seconds (ES) and Unavailable Seconds (UAS) for
the HLU to HRU-488 span (non-doubler applications) and any additional spans
(doubler applications) in 15-minute intervals over a 24-hour time period.
View Performance
History Allows viewing of the ES and UAS for the HLU to HRU-488 span (non-doubler applications) and any additional spans (doubler applications) in 24-hour intervals
over a 31-day period.
View Alarm History Allows viewing of alarm conditions for the HLU to HRU-488 span (non-doubler
applications) and any additional spans (doubler applications).
View System Inventory Displays the model, serial, and identification (ID) numbers of all units in the
circuit.
View Troubleshooting Provides a graphical analysis of the circuit and identifies problem areas.
Remote Logoff Terminates the remote session.
GNLB Loopback Commands
Loopback Inband Code Description
NLOC 1111000 DSX-1 signal is looped back to the network at the HLU.
NDU1 110000 DSX-1 signal is looped back to the network at HDU1.
NDU2 111000 DSX-1 signal is looped back to the network at HDU2.
NDU3 1010001 DSX-1 signal is looped back to the network at HDU3.
NDU4 1010010 DSX-1 signal is looped back to the network at HDU4.
NREM 1110000 DSX-1 signal is looped back to the network at the HRU.
SMJK 11000 DSX-1 signal is looped back to the network at the HRU SmartJack
module.
CLOC 1111100 Signal from customer is looped back to the customer at the HRU.
CDU1 111100 Signal from customer is looped back to the customer at HDU1.
CDU2 111110 Signal from customer is looped back to the customer at HDU2.
CDU3 1011001 Signal from customer is looped back to the customer at HDU3.
CDU4 1011010 Signal from customer is looped back to the customer at HDU4.
CREM 1111110 Signal from customer is looped back to the customer at the HLU.
Loopdown 11100 Deactivates any of the above loopbacks.
Network Customer
Pr
e
mi
ses
HLU HDU1 HDU2 HRU
NLOC NDU1 NDU2
NREM
SMJK
TLOS
CREM CDU1 CDU4CDU2 CLOC
HDU3 HDU4
NDU3 NDU4
CDU3

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
© 2000 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
THE HRU-488 LIST 1
The HiGain®Remote Unit HRU-488 List 1 functions as the remote end of a
repeaterless T1 transmission system. The HLU connects to a HiGain Line Unit (HLU)
High-bit-rate Digital Subscriber Line (HDSL), creating a system that provides 1.544
Mbps transmission on two unconditioned copper pairs over the full Carrier Service
Area (CSA) range. HiGain Doubler Units (HDUs) can also be used to extend the
range. The HRU-488 List 1 supports local powering only.
FEATURES
SPECIFICATIONS
•1.544 Mbps full-duplex transmission on two
unconditioned copper pairs
•Generic and addressable repeater loopback
activation codes
•Status Light Emitting Diodes (LEDs) for
Digital Signal Level 1 (DS1) and HDSL
•Lightning and power cross-protection on
HDSL and DS1 interfaces
•Craft port access for maintenance terminal
connection
•Local powering only with sealing current
option
•Double Dual Module Plus (DDM+) mechanics •Ultra-low wander
•Support for up to five spans •Fuse alarm circuit
•HiGain maintenance screens for inventory,
provisioning, troubleshooting, performance
monitoring, and reporting
•Two HDSL interfaces to HLU, HDU
Operating Temperature -40 °F to + 149 °F (-40 °C to + 65 °C)
Operating Humidity 5% to 95% non-condensing
Line Power Consumption 3.1 Watts
Electrical Protection Secondary surge and power cross-protection on
all DS1 and HDSL ports
Mounting DDM+ high-density shelf
HDSL Line Code 784 kbps 2B1Q (each loop)
HDSL Output +13.5 dBm ±0.5 dB, 135 Ω
DS1 Pulse Output 0 dB or -15 dB
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 Super Frame (ESF), Super Frame (SF),
or Unframed (UNFR)
INSTALLATION
1To set the simplex sealing current (SCURR), do one of the following:
•If the HRU-488 List 1 is to be used with an HDU-451 List 1, List 2, List 3,
or List 3B doubler, disable the simplex sealing current by placing the
SCURR switch in the up position. The HRU-488 sealing current circuit is
not compatible with these doublers.
•If the HRU-488 List 1 is to be used with the following compatible doublers,
enable the SCURR switch (down position).
–HDU-404, HDU-407, HDU-409
–HDU-437, HDU-439 List 1 or List 1B
–HDU-451 List 4 or List 4B
2To enable the Transmit Loss of Signal (TLOS) Loopback (LB), set the switch to
the down position.
3Set the Receive Level (RCVLEV) switch to the down (-15 dB) position or the up
(0 dB) position.
4Lift the front panel and slide the HRU-488 List 1 into the enclosure slot guides.
Push the unit back until properly seated in the backplane card-edge connector.
Continued Þ
RS
DCE
232
LIST 1
HRU 488
HiGain Rem Unit
ALM
LP1
LP2
ESF
SF
AMI
LBK
B8ZF
HRU-488 LIST 1
REMOTE UNIT
QUICK INSTALLATION
´,4L¶3_¨
1220443
March 21, 2000
Product Catalog: HRU-488 List 1
CLEI: T1L3KL7D
Document: 350-488-100-02, Issue 2