ADC HiGain HRU-402 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
HRU-402 LIST 2 AND LIST 2A
The HiGain®HRU List 2 or List 2A Remote Units function as the remote end of a
repeaterless T1 transmission system. When used in conjunction with a HDSL
(High-bit-rate Digital Subscriber Line) HiGain Line Unit (HLU), the system 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-402 List 2 can be locally powered or powered by an upstream line
unit. The List 2 and List 2A have identical features, except List 2A can not be locally
powered.
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 •DS1 transmit and receive monitor jacks for testing
•Local (List 2 only) and line-powering options •Remote provisioning
•Narrow 200 mechanics •Ultra-low wander
•Support for up to five spans
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 Any 400 or 200 mechanics shelf
HDSL Line Code 784 kbps 2B1Q
HDSL Output +13.5 dBm ±0.5 dB, 135Ω
DS1 Pulse Output 0 dB or -15 dB
Maximum Provisioning Loss 35 dB at 196 KHz, 135Ω
DS1 Line Rate 1.544 Mbps ±200 bps
DS1 Line Format AMI or B8ZS
DS1 Frame Format ESF, SF or Unframed
INSTALLATION
1For the List 2 only, set the simplex sealing current by doing one of the following:
•If the HRU-402 List 2 is to be used with an HDU-451 List 1, 2, 3 or 3B doubler,
disable the simplex sealing current by placing the SCURR switch in the up
position.
•For the following compatible doublers, enable the SCURR switch (down
position).
–HDU-404, HDU-407, HDU-409
–HDU-437, HDU-439 List 1 and List 1B
–HDU-451 List 4 and List 4B
2For the List 2 only, set the power option by doing one of the following:
•If the HRU-402 List 2 is to be powered by the upstream line unit, place LPWR
in the up position.
•For powering by a local -48 Vdc supply, place LPWR in the down position.
3Slide the HRU (List 2 or List 2A) into the card guides for the slot, and then push
the unit back until properly seated in the backplane card-edge connector.
Continued Þ
HiGain
REM UNIT
ALM
L
TELEPHONE Co. PROPERTY
LP2
ESF
SF
LP1
B8ZS
AMI
LBK
H
D
S
L
RCV
LEV
TLOS
LB
D
S
1
0 -15
DIS EN
XMT
MON
RCV
RS-232
DCE
HRU-402
HRU-402 LIST 2 AND LIST 2A
REMOTE UNIT
QUICK INSTALLATION
´,5-¶3k¨
1221133
September 3, 1999
Product Catalog: HRU-402-L2
CLEI: T1L4EE0B
Product Catalog: HRU-402-L2A
CLEI: T1L4EH0B
Document: 350-402-102-02, 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
© 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
HRU-402 LIST 2 AND LIST 2A
The HiGain®HRU List 2 or List 2A Remote Units function as the remote end of a
repeaterless T1 transmission system. When used in conjunction with a HDSL
(High-bit-rate Digital Subscriber Line) HiGain Line Unit (HLU), the system 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-402 List 2 can be locally powered or powered by an upstream line
unit. The List 2 and List 2A have identical features, except List 2A can not be locally
powered.
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 •DS1 transmit and receive monitor jacks for testing
•Local (List 2 only) and line-powering options •Remote provisioning
•Narrow 200 mechanics •Ultra-low wander
•Support for up to five spans
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 Any 400 or 200 mechanics shelf
HDSL Line Code 784 kbps 2B1Q
HDSL Output +13.5 dBm ±0.5 dB, 135Ω
DS1 Pulse Output 0 dB or -15 dB
Maximum Provisioning Loss 35 dB at 196 KHz, 135Ω
DS1 Line Rate 1.544 Mbps ±200 bps
DS1 Line Format AMI or B8ZS
DS1 Frame Format ESF, SF or Unframed
INSTALLATION
1For the List 2 only, set the simplex sealing current by doing one of the following:
•If the HRU-402 List 2 is to be used with an HDU-451 List 1, 2, 3 or 3B doubler,
disable the simplex sealing current by placing the SCURR switch in the up
position.
•For the following compatible doublers, enable the SCURR switch (down
position).
–HDU-404, HDU-407, HDU-409
–HDU-437, HDU-439 List 1 and List 1B
–HDU-451 List 4 and List 4B
2For the List 2 only, set the power option by doing one of the following:
•If the HRU-402 List 2 is to be powered by the upstream line unit, place LPWR
in the up position.
•For powering by a local -48 Vdc supply, place LPWR in the down position.
3Slide the HRU (List 2 or List 2A) into the card guides for the slot, and then push
the unit back until properly seated in the backplane card-edge connector.
Continued Þ
HiGain
REM UNIT
ALM
L
TELEPHONE Co. PROPERTY
LP2
ESF
SF
LP1
B8ZS
AMI
LBK
H
D
S
L
RCV
LEV
TLOS
LB
D
S
1
0 -15
DIS EN
XMT
MON
RCV
RS-232
DCE
HRU-402
HRU-402 LIST 2 AND LIST 2A
REMOTE UNIT
QUICK INSTALLATION
´,5-¶3k¨
1221133
September 3, 1999
Product Catalog: HRU-402-L2
CLEI: T1L4EE0B
Product Catalog: HRU-402-L2A
CLEI: T1L4EH0B
Document: 350-402-102-02, 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
© 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
HRU-402 LIST 2 AND LIST 2A
The HiGain®HRU List 2 or List 2A Remote Units function as the remote end of a
repeaterless T1 transmission system. When used in conjunction with a HDSL
(High-bit-rate Digital Subscriber Line) HiGain Line Unit (HLU), the system 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-402 List 2 can be locally powered or powered by an upstream line
unit. The List 2 and List 2A have identical features, except List 2A can not be locally
powered.
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 •DS1 transmit and receive monitor jacks for testing
•Local (List 2 only) and line-powering options •Remote provisioning
•Narrow 200 mechanics •Ultra-low wander
•Support for up to five spans
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 Any 400 or 200 mechanics shelf
HDSL Line Code 784 kbps 2B1Q
HDSL Output +13.5 dBm ±0.5 dB, 135Ω
DS1 Pulse Output 0 dB or -15 dB
Maximum Provisioning Loss 35 dB at 196 KHz, 135Ω
DS1 Line Rate 1.544 Mbps ±200 bps
DS1 Line Format AMI or B8ZS
DS1 Frame Format ESF, SF or Unframed
INSTALLATION
1For the List 2 only, set the simplex sealing current by doing one of the following:
•If the HRU-402 List 2 is to be used with an HDU-451 List 1, 2, 3 or 3B doubler,
disable the simplex sealing current by placing the SCURR switch in the up
position.
•For the following compatible doublers, enable the SCURR switch (down
position).
–HDU-404, HDU-407, HDU-409
–HDU-437, HDU-439 List 1 and List 1B
–HDU-451 List 4 and List 4B
2For the List 2 only, set the power option by doing one of the following:
•If the HRU-402 List 2 is to be powered by the upstream line unit, place LPWR
in the up position.
•For powering by a local -48 Vdc supply, place LPWR in the down position.
3Slide the HRU (List 2 or List 2A) into the card guides for the slot, and then push
the unit back until properly seated in the backplane card-edge connector.
Continued Þ
HiGain
REM UNIT
ALM
L
TELEPHONE Co. PROPERTY
LP2
ESF
SF
LP1
B8ZS
AMI
LBK
H
D
S
L
RCV
LEV
TLOS
LB
D
S
1
0 -15
DIS EN
XMT
MON
RCV
RS-232
DCE
HRU-402
HRU-402 LIST 2 AND LIST 2A
REMOTE UNIT
QUICK INSTALLATION
´,5-¶3k¨
1221133
September 3, 1999
Product Catalog: HRU-402-L2
CLEI: T1L4EE0B
Product Catalog: HRU-402-L2A
CLEI: T1L4EH0B
Document: 350-402-102-02, Issue 2

VERIFICATION
Once the HRU is installed, verify that it is operating properly by monitoring the status LEDs on the front panel.
LOGGING ON TO THE MAIN MENU
The HRU supports remote login through a maintenance terminal (ASCII terminal or a PC running terminal emulation software) connected to the craft port on the HRU front panel. Remote login creates menus and screens for the HRU that are identical to those viewed at the HLU. Once logged on, 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 HLU attached to the HRU-402, remote provisioning may be available. Refer to the appropriate HLU user manual 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.
DS1 transmit and receive monitor jacks Craft port provisioning To access all system maintenance, provisioning and performance screens, connect a standard 9-pin terminal cable between the serial port on a PC and the HRU craft port. DS1 receive level switch This switch sets the receive line buildout output toward the Customer Interface (CI) Loopback control button 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.
Modem settings: 1200-9600 baud 8 data bits No parity 1 stop bit Hardware flow control:OFF Terminal emulation:VT-100
27 25 23 21 19 17 15 13 11
9 7 3 5 1
DS-1 Tip
Card-edgeConnector
DS-1 Ring HDSL2 Ring1 HDSL2 Tip1
Factory Use Only
Factory Use Only
Factory Use Only
Protection Switch Power
DS-1 Ring1 Circuit Ground
(-)
(+)
HDSL1 Ring
XMT
RCV
HDSL1 Tip DS-1 Tip1 Chassis Ground*
28 26 24 22 20 18 16 14 12 10
8 4 6 2
55 53 51 49 47 45 43 41 39 37 35
32 31
56
54 52 50 48 46 44 42 40 38 36 34
30
33 29
Note: Active pins are highlighted in black.
*Chassis Ground may be tied to earth ground per local practice.
-48Vdc Local Power
Protection Switch Control
Chassis Ground*
Alarm LED
Loopback LED
TLOS loopback switch
CLEI/ECI Bar code label
Extraction handle
Configuration number label
(inside handle)
HDSL LEDs
DS1 framing LEDs
DS1 code LEDs
ALM
L
TELEPHONE Co. PROPERTY
LP2 ESF SF LP1
B8ZS
AMI
LBK
H D
S
L
RCV
LEV
D
S
1
0-15
DIS EN
TLOS
LB
XMT
MON
RCV
RS-232
DCE
List number
0
-15
Sets the DS1 receive level toward the CI to 0 dB.(Default setting)
Sets the DS1 receive level toward the CI to -15 dB.
Enables (ENA) or disables (DIS)
the TLOS loopback option
For monitoring and test access.
(List 2 only)
REM UNIT HiGain
HRU-402
Status LED Descriptions
LED Status Indicates Alarm (ALM) LED Shows alarm states for remote and local Loss of Signal (LOS).
Solid red Indicates a LOS condition at the HRU-402 T1 input.
Blinking Indicates a LOS condition at the HLU T1 input.
HDSL LED 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 on the HDSL loop.
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 twice 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 linecode option is set to Bipolar with 8-Zero Substitution
(B8ZS). 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 Alternate Mark Inversion
(AMI). 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 user manual from the Customer Site portion of the ADC Web page at www.adc.com.
SPACEBAR
ENTER
Table 1. Remote Terminal Main Menu Items
Menu Item Function
View Span Status Allows viewing of span status from the HLU to the HRU-402 (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-402 span (non-doubler applications) and any additional spans (doubler applications) in 15-minute intervals over a 4-hour time period.
View Performance History Allows viewing of the ES and UAS for the HLU to HRU-402 span (non-doubler
applications) andanyadditional spans(doublerapplications)in 24-hour intervals over a 31-day period.
View Alarm History Allows viewing of alarm conditions for the HLU to HRU-402 span (non-doubler
applications) and any additional spans (doubler applications).
View System Inventory Displays the model number, serial number, and ID 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.
Table 2. GNLB Loopback Commands
Loopback Inband Code Description 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 HRU is installed, verify that it is operating properly by monitoring the status
LEDs on the front panel.
LOGGING ON TO THE MAIN MENU
The HRU supports remote login through a maintenance terminal (ASCII terminal or a PC
running terminal emulation software) connected to the craft port on the HRU front panel.
Remote login creates menus and screens for the HRU that are identical to those viewed at
the HLU. Once logged on, 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 HLU attached to the HRU-402, remote provisioning may be
available. Refer to the appropriate HLU user manual 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.
DS1 transmit and receive monitor jacks
Craft port provisioning
To access all system maintenance, provisioning
and performance screens, connect a standard
9-pin terminal cable between the serial port on a PC
and the HRU craft port.
DS1 receive level switch
This switch sets the receive line buildout output
toward the Customer Interface (CI)
Loopback control button
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.
Modem settings:
1200-9600 baud
8 data bits
No parity
1 stop bit
Hardware flow control:OFF
Terminal emulation:VT-100
27
25
23
21
19
17
15
13
11
9
7
3
5
1
DS-1 Tip
Card-edgeConnector
DS-1 Ring
HDSL2 Ring1
HDSL2 Tip1
Factory Use Only
Factory Use Only
Factory Use Only
Protection Switch Power
DS-1 Ring1
Circuit Ground
(-)
(+)
HDSL1 Ring
XMT
RCV
HDSL1 Tip
DS-1 Tip1
Chassis Ground*
28
26
24
22
20
18
16
14
12
10
8
4
6
2
55
53
51
49
47
45
43
41
39
37
35
32 31
56
54
52
50
48
46
44
42
40
38
36
34
30
33
29
Note: Active pins are highlighted in black.
*Chassis Ground may be tied to earth ground per local practice.
-48Vdc Local Power
Protection Switch Control
Chassis Ground*
Alarm LED
Loopback LED
TLOS loopback switch
CLEI/ECI Bar code label
Extraction handle
Configuration number label
(inside handle)
HDSL LEDs
DS1 framing LEDs
DS1 code LEDs
ALM
L
TELEPHONE Co. PROPERTY
LP2
ESF
SF
LP1
B8ZS
AMI
LBK
H
D
S
L
RCV
LEV
D
S
1
0-15
DIS EN
TLOS
LB
XMT
MON
RCV
RS-232
DCE
List number
0
-15
Sets the DS1 receive level toward the
CI to 0 dB.(Default setting)
Sets the DS1 receive level toward the CI
to -15 dB.
Enables (ENA) or disables (DIS)
the TLOS loopback option
For monitoring and test access.
(List 2 only)
REM UNIT
HiGain
HRU-402
Status LED Descriptions
LED Status Indicates
Alarm (ALM) LED Shows alarm states for remote and local Loss of Signal (LOS).
Solid red Indicates a LOS condition at the HRU-402 T1 input.
Blinking Indicates a LOS condition at the HLU T1 input.
HDSL LED 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 on the HDSL loop.
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 twice 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 linecode option is set to Bipolar with 8-Zero Substitution
(B8ZS). 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 Alternate Mark Inversion
(AMI). 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 user manual from the Customer Site portion of
the ADC Web page at www.adc.com.
SPACEBAR
ENTER
Table 1. Remote Terminal Main Menu Items
Menu Item Function
View Span Status Allows viewing of span status from the HLU to the HRU-402 (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-402 span (non-doubler applications) and any additional spans
(doubler applications) in 15-minute intervals over a 4-hour time period.
View Performance
History Allows viewing of the ES and UAS for the HLU to HRU-402 span (non-doubler applications) andanyadditional spans(doublerapplications)in 24-hour intervals
over a 31-day period.
View Alarm History Allows viewing of alarm conditions for the HLU to HRU-402 span (non-doubler
applications) and any additional spans (doubler applications).
View System Inventory Displays the model number, serial number, and ID 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.
Table 2. GNLB Loopback Commands
Loopback Inband Code Description
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 HRU is installed, verify that it is operating properly by monitoring the status
LEDs on the front panel.
LOGGING ON TO THE MAIN MENU
The HRU supports remote login through a maintenance terminal (ASCII terminal or a PC
running terminal emulation software) connected to the craft port on the HRU front panel.
Remote login creates menus and screens for the HRU that are identical to those viewed at
the HLU. Once logged on, 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 HLU attached to the HRU-402, remote provisioning may be
available. Refer to the appropriate HLU user manual 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.
DS1 transmit and receive monitor jacks
Craft port provisioning
To access all system maintenance, provisioning
and performance screens, connect a standard
9-pin terminal cable between the serial port on a PC
and the HRU craft port.
DS1 receive level switch
This switch sets the receive line buildout output
toward the Customer Interface (CI)
Loopback control button
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.
Modem settings:
1200-9600 baud
8 data bits
No parity
1 stop bit
Hardware flow control:OFF
Terminal emulation:VT-100
27
25
23
21
19
17
15
13
11
9
7
3
5
1
DS-1 Tip
Card-edgeConnector
DS-1 Ring
HDSL2 Ring1
HDSL2 Tip1
Factory Use Only
Factory Use Only
Factory Use Only
Protection Switch Power
DS-1 Ring1
Circuit Ground
(-)
(+)
HDSL1 Ring
XMT
RCV
HDSL1 Tip
DS-1 Tip1
Chassis Ground*
28
26
24
22
20
18
16
14
12
10
8
4
6
2
55
53
51
49
47
45
43
41
39
37
35
32 31
56
54
52
50
48
46
44
42
40
38
36
34
30
33
29
Note: Active pins are highlighted in black.
*Chassis Ground may be tied to earth ground per local practice.
-48Vdc Local Power
Protection Switch Control
Chassis Ground*
Alarm LED
Loopback LED
TLOS loopback switch
CLEI/ECI Bar code label
Extraction handle
Configuration number label
(inside handle)
HDSL LEDs
DS1 framing LEDs
DS1 code LEDs
ALM
L
TELEPHONE Co. PROPERTY
LP2
ESF
SF
LP1
B8ZS
AMI
LBK
H
D
S
L
RCV
LEV
D
S
1
0-15
DIS EN
TLOS
LB
XMT
MON
RCV
RS-232
DCE
List number
0
-15
Sets the DS1 receive level toward the
CI to 0 dB.(Default setting)
Sets the DS1 receive level toward the CI
to -15 dB.
Enables (ENA) or disables (DIS)
the TLOS loopback option
For monitoring and test access.
(List 2 only)
REM UNIT
HiGain
HRU-402
Status LED Descriptions
LED Status Indicates
Alarm (ALM) LED Shows alarm states for remote and local Loss of Signal (LOS).
Solid red Indicates a LOS condition at the HRU-402 T1 input.
Blinking Indicates a LOS condition at the HLU T1 input.
HDSL LED 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 on the HDSL loop.
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 twice 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 linecode option is set to Bipolar with 8-Zero Substitution
(B8ZS). 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 Alternate Mark Inversion
(AMI). 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 user manual from the Customer Site portion of
the ADC Web page at www.adc.com.
SPACEBAR
ENTER
Table 1. Remote Terminal Main Menu Items
Menu Item Function
View Span Status Allows viewing of span status from the HLU to the HRU-402 (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-402 span (non-doubler applications) and any additional spans
(doubler applications) in 15-minute intervals over a 4-hour time period.
View Performance
History Allows viewing of the ES and UAS for the HLU to HRU-402 span (non-doubler applications) andanyadditional spans(doublerapplications)in 24-hour intervals
over a 31-day period.
View Alarm History Allows viewing of alarm conditions for the HLU to HRU-402 span (non-doubler
applications) and any additional spans (doubler applications).
View System Inventory Displays the model number, serial number, and ID 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.
Table 2. GNLB Loopback Commands
Loopback Inband Code Description
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
© 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
HRU-402 LIST 2 AND LIST 2A
The HiGain®HRU List 2 or List 2A Remote Units function as the remote end of a
repeaterless T1 transmission system. When used in conjunction with a HDSL
(High-bit-rate Digital Subscriber Line) HiGain Line Unit (HLU), the system 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-402 List 2 can be locally powered or powered by an upstream line
unit. The List 2 and List 2A have identical features, except List 2A can not be locally
powered.
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 •DS1 transmit and receive monitor jacks for testing
•Local (List 2 only) and line-powering options •Remote provisioning
•Narrow 200 mechanics •Ultra-low wander
•Support for up to five spans
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 Any 400 or 200 mechanics shelf
HDSL Line Code 784 kbps 2B1Q
HDSL Output +13.5 dBm ±0.5 dB, 135Ω
DS1 Pulse Output 0 dB or -15 dB
Maximum Provisioning Loss 35 dB at 196 KHz, 135Ω
DS1 Line Rate 1.544 Mbps ±200 bps
DS1 Line Format AMI or B8ZS
DS1 Frame Format ESF, SF or Unframed
INSTALLATION
1For the List 2 only, set the simplex sealing current by doing one of the following:
•If the HRU-402 List 2 is to be used with an HDU-451 List 1, 2, 3 or 3B doubler,
disable the simplex sealing current by placing the SCURR switch in the up
position.
•For the following compatible doublers, enable the SCURR switch (down
position).
–HDU-404, HDU-407, HDU-409
–HDU-437, HDU-439 List 1 and List 1B
–HDU-451 List 4 and List 4B
2For the List 2 only, set the power option by doing one of the following:
•If the HRU-402 List 2 is to be powered by the upstream line unit, place LPWR
in the up position.
•For powering by a local -48 Vdc supply, place LPWR in the down position.
3Slide the HRU (List 2 or List 2A) into the card guides for the slot, and then push
the unit back until properly seated in the backplane card-edge connector.
Continued Þ
HiGain
REM UNIT
ALM
L
TELEPHONE Co. PROPERTY
LP2
ESF
SF
LP1
B8ZS
AMI
LBK
H
D
S
L
RCV
LEV
TLOS
LB
D
S
1
0 -15
DIS EN
XMT
MON
RCV
RS-232
DCE
HRU-402
HRU-402 LIST 2 AND LIST 2A
REMOTE UNIT
QUICK INSTALLATION
´,5-¶3k¨
1221133
September 3, 1999
Product Catalog: HRU-402-L2
CLEI: T1L4EE0B
Product Catalog: HRU-402-L2A
CLEI: T1L4EH0B
Document: 350-402-102-02, Issue 2