ADC H2TU-C-202 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
H2TU-C-202 LIST 1F
TheHiGain®HDSL2 product family is the industry’s first practical implementation of
High-bit-rate Digital Subscriber Line 2 (HDSL2). When an H2TU-C line unit is used
in conjunction with a HiGain ™HDSL2 remote unit (H2TU-R), the system provides
1.552 Mbps transmission on one unconditioned copper pair over the full Carrier
Service Area (CSA) range. The CSA includes loops up to 12,000 feet of 24 AWG wire
or 9,000 feet of 26 AWG wire, including bridged taps.
FEATURES
SPECIFICATIONS
•Front-panel status LED, craft port, and
four-character status display •Payload (PL) or HiGain (HG) loopback source identification
•Ultra-low wander •Bipolar Violation Transparency (BPVT) option
•Loss of Signal (LOS)/Alarm Indication Signal
(AIS) payload alarm option •Performance Report Messaging (SPRM and NPRM)
•Grounded loop detection •Bit Error Rate (BER) alarm option
•Dual loopback commands •Power Back Off (PBON and PBOC) for
configuring power output levels
•Maintenance screens for inventory,
provisioning, troubleshooting, and
performance monitoring
•Remote provisioning through TL1, FSL, or
11-bit payload commands
Operating Temperature -40 °F to +149 °F (-40 °C to +65 °C)
Operating Humidity 5% to 95% non-condensing
HDSL2 Span Voltage 0, -185 Vdc
Mounting 220 mechanics high-density shelf
HDSL2 Line Rate 1.552 Mbps Overlapped Pulse Amplitude Modulation Transmission
with Interlocking Spectra (OPTIS)
HDSL2 Output +16.8 dBm ±0.5 dB, 135 Ωat CO side
+16.5 dBm ±0.5 dB, 135 Ωat remote side
Maximum Loop Attenuation 35 dB at 196 KHz, 135 Ω
DSX-1 Line Rate 1.544 Mbps ±200 bps
DSX-1 Line Format Alternate Mark Inversion (AMI) or Bipolar with 8-Zero Substitution (B8ZS)
DSX-1 Frame Format Extended SuperFrame (ESF), SuperFrame (SF), or Unframed (UNFR)
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 H2TU-C, align the H2TU-C with the enclosure
slot guides and slide the unit in. When the unit is properly seated, the retaining latch
snaps closed.
POWER-UP SEQUENCE
When the H2TU-C powers up, the four-character display illuminates and reports
status messages.
If the H2TU-C is unable to communicate with the next span device, it displays various
alarm and status messages.
If the unit is able to communicate with the next span device, the following occurs:
1The Status LED flashes red, while acquiring each device in the system, and turns
steady green when the entire system is operating with no alarms. The DS1 signal
must be present.
2Thefour-characterdisplayreportsmargin(SNR)readings(shouldbe≥6dB)and
loop attenuation (should be <35 dB @196 KHz).
3Any alarm conditions that exist after the system powers up are reported on the
display. The HLU reports alarms if no DS1 signal is applied.
PROVISIONING
After installing the H2TU-C, perform these basic provisioning tasks by accessing the
HiGain HDSL2 logon screen. Refer to the onscreen Help menu for navigational aids.
1Connect a maintenance terminal to the craft port (see front-panel illustration
inside), then press + to refresh the logon screen, if necessary.
2Select the Config menu, Date and Time, then type the date and time.
3Select the Inventory menu, then type in the unit ID numbers.
4Change the settings of any system parameters, if necessary, by selecting the
Config menu, Standard Options or ADC Options.
5Once the H2TU-C is successfully installed and provisioned, access the Monitor,
Performance, or Event Log menu to clear the Performance, Alarm History, or
Event Log screens, or use Master Clear in the Config menu.
Continued
CTRL R
Þ
L
HiGain
HDSL2
H
D
S
L
2
M
O
D
E
STATUS
RS-232
DCE
L
B
K
H
2
T
U
•
C
2
0
2
XMT
BRG
D
S
X
1RCV
1F
H2TU-C-202 LIST 1F
LINE UNIT
QUICK INSTALLATION
´,-)¶0@¨
1213090
October 2, 2000
Product Catalog: 150-2402-16
CLEI: VACHVW8C
Document: 352-202-116-02

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
H2TU-C-202 LIST 1F
TheHiGain®HDSL2 product family is the industry’s first practical implementation of
High-bit-rate Digital Subscriber Line 2 (HDSL2). When an H2TU-C line unit is used
in conjunction with a HiGain ™HDSL2 remote unit (H2TU-R), the system provides
1.552 Mbps transmission on one unconditioned copper pair over the full Carrier
Service Area (CSA) range. The CSA includes loops up to 12,000 feet of 24 AWG wire
or 9,000 feet of 26 AWG wire, including bridged taps.
FEATURES
SPECIFICATIONS
•Front-panel status LED, craft port, and
four-character status display •Payload (PL) or HiGain (HG) loopback source identification
•Ultra-low wander •Bipolar Violation Transparency (BPVT) option
•Loss of Signal (LOS)/Alarm Indication Signal
(AIS) payload alarm option •Performance Report Messaging (SPRM and NPRM)
•Grounded loop detection •Bit Error Rate (BER) alarm option
•Dual loopback commands •Power Back Off (PBON and PBOC) for
configuring power output levels
•Maintenance screens for inventory,
provisioning, troubleshooting, and
performance monitoring
•Remote provisioning through TL1, FSL, or
11-bit payload commands
Operating Temperature -40 °F to +149 °F (-40 °C to +65 °C)
Operating Humidity 5% to 95% non-condensing
HDSL2 Span Voltage 0, -185 Vdc
Mounting 220 mechanics high-density shelf
HDSL2 Line Rate 1.552 Mbps Overlapped Pulse Amplitude Modulation Transmission
with Interlocking Spectra (OPTIS)
HDSL2 Output +16.8 dBm ±0.5 dB, 135 Ωat CO side
+16.5 dBm ±0.5 dB, 135 Ωat remote side
Maximum Loop Attenuation 35 dB at 196 KHz, 135 Ω
DSX-1 Line Rate 1.544 Mbps ±200 bps
DSX-1 Line Format Alternate Mark Inversion (AMI) or Bipolar with 8-Zero Substitution (B8ZS)
DSX-1 Frame Format Extended SuperFrame (ESF), SuperFrame (SF), or Unframed (UNFR)
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 H2TU-C, align the H2TU-C with the enclosure
slot guides and slide the unit in. When the unit is properly seated, the retaining latch
snaps closed.
POWER-UP SEQUENCE
When the H2TU-C powers up, the four-character display illuminates and reports
status messages.
If the H2TU-C is unable to communicate with the next span device, it displays various
alarm and status messages.
If the unit is able to communicate with the next span device, the following occurs:
1The Status LED flashes red, while acquiring each device in the system, and turns
steady green when the entire system is operating with no alarms. The DS1 signal
must be present.
2Thefour-characterdisplayreportsmargin(SNR)readings(shouldbe≥6dB)and
loop attenuation (should be <35 dB @196 KHz).
3Any alarm conditions that exist after the system powers up are reported on the
display. The HLU reports alarms if no DS1 signal is applied.
PROVISIONING
After installing the H2TU-C, perform these basic provisioning tasks by accessing the
HiGain HDSL2 logon screen. Refer to the onscreen Help menu for navigational aids.
1Connect a maintenance terminal to the craft port (see front-panel illustration
inside), then press + to refresh the logon screen, if necessary.
2Select the Config menu, Date and Time, then type the date and time.
3Select the Inventory menu, then type in the unit ID numbers.
4Change the settings of any system parameters, if necessary, by selecting the
Config menu, Standard Options or ADC Options.
5Once the H2TU-C is successfully installed and provisioned, access the Monitor,
Performance, or Event Log menu to clear the Performance, Alarm History, or
Event Log screens, or use Master Clear in the Config menu.
Continued
CTRL R
Þ
L
HiGain
HDSL2
H
D
S
L
2
M
O
D
E
STATUS
RS-232
DCE
L
B
K
H
2
T
U
•
C
2
0
2
XMT
BRG
D
S
X
1RCV
1F
H2TU-C-202 LIST 1F
LINE UNIT
QUICK INSTALLATION
´,-)¶0@¨
1213090
October 2, 2000
Product Catalog: 150-2402-16
CLEI: VACHVW8C
Document: 352-202-116-02

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
H2TU-C-202 LIST 1F
TheHiGain®HDSL2 product family is the industry’s first practical implementation of
High-bit-rate Digital Subscriber Line 2 (HDSL2). When an H2TU-C line unit is used
in conjunction with a HiGain ™HDSL2 remote unit (H2TU-R), the system provides
1.552 Mbps transmission on one unconditioned copper pair over the full Carrier
Service Area (CSA) range. The CSA includes loops up to 12,000 feet of 24 AWG wire
or 9,000 feet of 26 AWG wire, including bridged taps.
FEATURES
SPECIFICATIONS
•Front-panel status LED, craft port, and
four-character status display •Payload (PL) or HiGain (HG) loopback source identification
•Ultra-low wander •Bipolar Violation Transparency (BPVT) option
•Loss of Signal (LOS)/Alarm Indication Signal
(AIS) payload alarm option •Performance Report Messaging (SPRM and NPRM)
•Grounded loop detection •Bit Error Rate (BER) alarm option
•Dual loopback commands •Power Back Off (PBON and PBOC) for
configuring power output levels
•Maintenance screens for inventory,
provisioning, troubleshooting, and
performance monitoring
•Remote provisioning through TL1, FSL, or
11-bit payload commands
Operating Temperature -40 °F to +149 °F (-40 °C to +65 °C)
Operating Humidity 5% to 95% non-condensing
HDSL2 Span Voltage 0, -185 Vdc
Mounting 220 mechanics high-density shelf
HDSL2 Line Rate 1.552 Mbps Overlapped Pulse Amplitude Modulation Transmission
with Interlocking Spectra (OPTIS)
HDSL2 Output +16.8 dBm ±0.5 dB, 135 Ωat CO side
+16.5 dBm ±0.5 dB, 135 Ωat remote side
Maximum Loop Attenuation 35 dB at 196 KHz, 135 Ω
DSX-1 Line Rate 1.544 Mbps ±200 bps
DSX-1 Line Format Alternate Mark Inversion (AMI) or Bipolar with 8-Zero Substitution (B8ZS)
DSX-1 Frame Format Extended SuperFrame (ESF), SuperFrame (SF), or Unframed (UNFR)
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 H2TU-C, align the H2TU-C with the enclosure
slot guides and slide the unit in. When the unit is properly seated, the retaining latch
snaps closed.
POWER-UP SEQUENCE
When the H2TU-C powers up, the four-character display illuminates and reports
status messages.
If the H2TU-C is unable to communicate with the next span device, it displays various
alarm and status messages.
If the unit is able to communicate with the next span device, the following occurs:
1The Status LED flashes red, while acquiring each device in the system, and turns
steady green when the entire system is operating with no alarms. The DS1 signal
must be present.
2Thefour-characterdisplayreportsmargin(SNR)readings(shouldbe≥6dB)and
loop attenuation (should be <35 dB @196 KHz).
3Any alarm conditions that exist after the system powers up are reported on the
display. The HLU reports alarms if no DS1 signal is applied.
PROVISIONING
After installing the H2TU-C, perform these basic provisioning tasks by accessing the
HiGain HDSL2 logon screen. Refer to the onscreen Help menu for navigational aids.
1Connect a maintenance terminal to the craft port (see front-panel illustration
inside), then press + to refresh the logon screen, if necessary.
2Select the Config menu, Date and Time, then type the date and time.
3Select the Inventory menu, then type in the unit ID numbers.
4Change the settings of any system parameters, if necessary, by selecting the
Config menu, Standard Options or ADC Options.
5Once the H2TU-C is successfully installed and provisioned, access the Monitor,
Performance, or Event Log menu to clear the Performance, Alarm History, or
Event Log screens, or use Master Clear in the Config menu.
Continued
CTRL R
Þ
L
HiGain
HDSL2
H
D
S
L
2
M
O
D
E
STATUS
RS-232
DCE
L
B
K
H
2
T
U
•
C
2
0
2
XMT
BRG
D
S
X
1RCV
1F
H2TU-C-202 LIST 1F
LINE UNIT
QUICK INSTALLATION
´,-)¶0@¨
1213090
October 2, 2000
Product Catalog: 150-2402-16
CLEI: VACHVW8C
Document: 352-202-116-02

LOOPBACK TESTING
Initiate loopback testing from the HiGain maintenance terminal screen or use the MODE and LBK buttons. The inband codes below (except COLB, and RULB) can also be sent by a test set. For more information about the HiGain HDSL2 maintenance screens, refer to the H2TU-C-202 List 1F technical practice, document number 152-202-116-xx. Contact Customer Service to obtain a copy of the practice.
RS-232 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 H2TU-C craft port.
9600 baud 8 data bits No parity 1 stop bit Hardware flow control: OFF Terminal emulation: VT100
MaintenanceTerminal Modem Settings
Card-edge Connector
Reports the following conditions: • Green LED:
Normal operation
• Red LED:
Fuse alarm
• Flashing Red LED:
HDSL2 acquisition or system alarm
•Yellow LED:
Customer remote (CREM) or network local (NLOC) loopback is in effect
• Off:
Line power is off
Front-panel display
Status LED
Displays status, provisioning, and alarm messages. See tables
below for message descriptions.
27 25 23 21 19 17 15 13 11
9 7 3 5 1
Management bus
Burnin/
Factory use only
Circuit ground
(-)
(+)
DSX-1In
Tip
Fusealarm
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.
HDSL2Span
DSX-1Out
-48Vdc Local power
Chassis ground*
Alarm
Ring1 Tip1
Tip
Ring
Ring
Factoryuseonly
* Chassis ground may be connected to Earth ground per local practice.
HiGain HDSL2
XMT
D
S X
1
BRG
RCV
H
2
T
U
*
C
2 0 2
H D
S
L
2
M
O
D
E
STATUS
L
B K
RS-232
DCE
L1F
List number
Mode and LBK system option buttons
Use the MODE and LBK buttons to review all system parameters, including user-configured settings, and to activate loopbacks. To display system parameters: Press the MODE button for at least 3 seconds to place the front-panel display in scroll mode.When it has finished scrolling through all the system parameters, the display returns to its normal mode. To initiate a dual loopback: Press the LBK button for more than 3 seconds to activate both the NLOC and CREM loopbacks.If a loopback condition already exists, this will loopdown all existing loopbacks.Press the LBK button again for more than 3 seconds to reactivate the dual loopback. To initiate a manual loopback:
DSX-1 access jacks
Connect standard test equipment. • BRG
Provides non-intrusive bridging jack access to (XMT) and from (RCV) the HDSL2 span at the DSX-1 interface. Allows monitoring of the DS1 payloads.
1Press both MODE and LBK buttons for at least
5 seconds.The following message appears:
2 Press LBK to activate the NLOC loopback or press
MODE to advance to the next loopback selection.
MAN LBK NLO?
To initiate a manual loopback: Press both MODE and LBK buttons for 3 or more seconds.
GNLB Loopback Commands
Loopback Inband Code Description NLOC 1111000 DSX-1 signal is looped back to the network at the H2TU-C. NREM 1110000 DSX-1 signal is looped back to the network at the H2TU-R. COLB (a)
(a) Dual loopbacks are only initiated from the MODE and LBK button.
DSX-1 signal is looped back to the network at the H2TU-C and signal from the customer is looped back to the customer at the H2TU-C.
RULB (b) DSX-1 signal is looped back to the network at the H2TU-R and signal from the
customer is looped back to the customer at the H2TU-R.
CREM 1111110 DS1 signal from customer is looped back to the customer at the H2TU-C. CLOC 1111100 DS1 signal from customer is looped back to the customer at the H2TU-R. SMJK 11000 DSX-1 signal is looped back to the network at the H2TU-R SmartJack module. Loopdown 11100 Deactivates any of the above loopbacks.
To comply with the intrabuilding wiring requirements of GR-1089 CORE, Section 4.5.9, the shields of the ABAM-type cables that connect the H2TU-C-202 List 1F DSX-1 output ports to the cross-connect panel must be grounded at both ends.
Front Panel Alarm Messages (a)
(a) Front-panel alarm messages are listed in order of priority. ALRM displays prior to any alarm message.
Pressing the LBK button initiates an Alarm Cutoff (ACO) message.
Message Description (listed in priority order) PWR FEED SHRT (b)
(b) Message displays repeatedly as long as the alarm condition exists and is not included in the priority order.
A short between the Tip and Ring of the HDSL2 pair.
PWR FEED GND (b) The HDSL2 loop is grounded. PWR FEED OPEN (b) A line-power open condition. SPNn-LOSW The HDSL2 loop has lost synchronization. The span closest to the network has
higher priority.
LLOS No signal is detected at the DSX-1 input to the H2TU-C. RLOS No signal is detected at the DS1 input to the H2TU-R. LAIS (c)
(c) Does not activate the alarm relay access pins 20 and 21.
Local Alarm Indication Signal.
RAIS (c) Remote Alarm Indication Signal. TRCI An RAI alarm (yellow LED) from the CPE with an error-free signal from the line unit
or network.
RRAI An RAI alarm (yellow LED) from the Customer Premises Equipment (CPE) with
errors from the line unit or network.
xxx-DBER A system DS1 Bit Error Rate (BER) alarm. (xxx denotes either TUC or TUR.)
PRMF H2TU-R Performance Report Messaging BER threshold exceeded at far end. PRMN H2TU-R Performance Report Messaging BER threshold exceeded at near end. xxx-HBER A system HDSL2 Block Error Rate (BER) alarm. (xxx denotes either TUC or TUR.) xxx-MAL The margin on the HDSL2 loop has dropped below the threshold setting. (xxx
denotes either TUC or TUR.)
xxx-LA The attenuation on the HDSL2 loop has exceeded the maximum threshold value.
(xxx denotes either TUC or TUR.)
Network
Customer Premises
H2TU-C H2TU-R
TLOS
NLOC CREM CLOC
1111000 NREM
1110000 1111100
1111110
11000 SMJK
Front Panel Diagnostic Messages
Message Description A=xx The loop attenuation of the longest (maximum loss) span, measured in dB. ACQ The multiplexers of the HLU and H2TU-R are trying to establish synchronization. ARM Armed to respond to Intelligent Repeater Loop (ILR) codes. BAD RT? The H2TU-C is not receiving a response from the H2TU-R. FERR A framing bit error occurred at H2TU-C DSX-1 input. FLDL Flash download of firmware updates. (Contact Customer Service for update
procedures.)
HES H2TU-C HDSL2 loop cyclical redundancy check (CRC) error. LBPV A local bipolar violation has been received at the DSX-1 input to the H2TU-C. M=xx Indicates the power of the received HDSL2 signal relative to noise (S/N with respect to 21.5
dB). Any value of 6 dB or greater is adequate for reliable system operation.
MNGD The H2TU-C is under control of the HMU-319 network management unit. PWR FEED OFF HDSL2 span power is turned off. PWR FEED ON Indicates that the HDSL2 loop is not grounded or shorted. SIG The transceivers of the H2TU-C and H2TU-R (or the H2TU-C and first regenerator) are
trying to establish contact with each other on Span 1 of the HDSL2 loop.
Front-Panel Read-Only Settings Using MODE
Message Description (Default selections in bold. To scroll, press the MODE button for 3
seconds.)
VER x.xx Software version number x.xx. LIST xx List number of the H2TU-C-231. FRM xxxx Frame (SF, ESF, UNFR). CODE xxxx Line code setting (AMI or B8ZS). LATT xx Loop Attenuation threshold setting (38). MARG xx Margin threshold setting (4). EQL Sets the DSX-1 Equalizer to: EXT (replaces internal equalizer with external equalizer), 0 (0
to 132 ft.), 133 (133 to 265 ft.), 266 (266 to 398 ft.), 399 (399 to 532 ft.), 533 (533 to 655 ft.).
RLBO Sets the H2TU-R line buildout to 0 dB, -7.5 dB, or -15 dB. LPBK Enables (ENA) or disables (DIS) SmartJack loopback commands. SPLB xxxx Configures system for generic (GNLB) or specialinbandloopback commands (A1LB,A2LB, A3LB,
A4LB, A5LB).
PWRF OFF = disables HDSL2 powering; ON = HDSL2 line voltage is -185 Vdc maximum. HBER 1E-6 or 1E-7 = alarm activates when the HDSL2 BER alarm thresholdexceeds 10-6 or 10-7.
NONE = prevents generation of a system alarm due to BER.
DBER Enables (ENA) or disables (DIS) fixed 24-hour DSX-1 BER alarm threshold. LBTO Loopback timeout = NONE, 20, 60, 120 minutes. ALM Enables (ENA) or disables (DIS) alarm indications on pins 20 and 21. DS1 DSX-1 line code = Bipolar with 8-Zero Substitution (B8ZS), Alternate Mark Inversion (AMI). CONV H2TU-R frame format conversion = OFF (framing determined by the DS1 FRMG option),
ACON (autodetection of framing and potential frame conversion at the H2TU-R), or FCON (autodetection of framing and forced frame format conversion at the H2TU-R).
FRMG DS1 frame formatting = AUTO (auto framing mode) or UNFR (unframed mode), RDA Enables (ENA) or disables (DIS) alarm indications due to remote DS1 LOS at H2TU-R input. ALMP Enables system to output an alarm pattern: Alarm Indication Signal (AIS) or Loss of Signal
(LOS).
BPVT Enables (ENA) or disables (DIS) Bipolar Violation Transparency (BPVT). NLBP Enables the H2TU-R to transmit either AIS or LOS towards CI for any network loopback. TLOS Enables (ENA) or disables (DIS) a logic loopback at the H2TU-R when an LOS occurs at its
DS1 input.
PRM OFF = no enhanced Performance Report Messaging; SPRM = Supplemental PRM;
NPRM = Network PRM; S + N = SPRM + NPRM.
NAIS If ALMP is set to AIS, this option specifies which pattern is sent to the network when a
remote LOS or AIS occurs. CI = AIS-CI sent to the network; AIS = AIS sent to the network.
ROVR Enables (ENA) or disables (DIS) conversion of an ESF DS1 payload from the network with
an embedded RAI pattern to an SF-RAI pattern toward the CI at the H2TU-R. CONV option must be set to FCON or ACON.
RACI Enables (ENA) or disables (DIS) conversion of a DS1 RAI (yellow alarm) signal received by
the H2TU-R to be converted to an RAI-CI signal toward the network.
PBON Configures the power output levels of the HLU network unit toward the network. PBOC Configures the power output levels of the H2TU-R customer unit toward the customer.

LOOPBACK TESTING
Initiate loopback testing from the HiGain maintenance terminal screen or use the MODE
and LBK buttons. The inband codes below (except COLB, and RULB) can also be sent by
a test set.
For more information about the HiGain HDSL2 maintenance screens, refer to the
H2TU-C-202 List 1F technical practice, document number 152-202-116-xx. Contact
Customer Service to obtain a copy of the practice.
RS-232 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 H2TU-C craft port.
9600 baud
8 data bits
No parity
1 stop bit
Hardware flow control: OFF
Terminal emulation: VT100
MaintenanceTerminal Modem Settings
Card-edge Connector
Reports the following conditions:
• Green LED:
Normal operation
• Red LED:
Fuse alarm
• Flashing Red LED:
HDSL2 acquisition or
system alarm
•Yellow LED:
Customer remote (CREM) or
network local (NLOC) loopback
is in effect
• Off:
Line power is off
Front-panel display
Status LED
Displays status, provisioning,
and alarm messages. See tables
below for message descriptions.
27
25
23
21
19
17
15
13
11
9
7
3
5
1
Management bus
Burnin/ Factory use only
Circuit ground
(-)
(+)
DSX-1In
Tip
Fusealarm
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.
HDSL2Span
DSX-1Out
-48Vdc Local power
Chassis ground*
Alarm
Ring1
Tip1
Tip
Ring
Ring
Factoryuseonly
* Chassis ground may be connected to Earth ground per local practice.
HiGain
HDSL2
XMT
D
S
X
1
BRG
RCV
H
2
T
U
*
C
2
0
2
H
D
S
L
2
M
O
D
E
STATUS
L
B
K
RS-232
DCE
L1F
List number
Mode and LBK system option buttons
Use the MODE and LBK buttons to review all system
parameters, including user-configured settings, and to
activate loopbacks.
To display system parameters: Press the MODE button
for at least 3 seconds to place the front-panel display in
scroll mode.When it has finished scrolling through all the
system parameters, the display returns to its normal mode.
To initiate a dual loopback: Press the LBK button for
more than 3 seconds to activate both the NLOC and
CREM loopbacks.If a loopback condition already exists,
this will loopdown all existing loopbacks.Press the LBK
button again for more than 3 seconds to reactivate the
dual loopback.
To initiate a manual loopback:
DSX-1 access jacks
Connect standard test equipment.
• BRG
Provides non-intrusive bridging jack
access to (XMT) and from (RCV)
the HDSL2 span at the DSX-1 interface.
Allows monitoring of the DS1 payloads.
1Press both MODE and LBK buttons for at least
5 seconds.The following message appears:
2 Press LBK to activate the NLOC loopback or press
MODE to advance to the next loopback selection.
MAN LBK NLO?
To initiate a manual loopback: Press both
MODE and LBK buttons for 3 or more seconds.
GNLB Loopback Commands
Loopback Inband Code Description
NLOC 1111000 DSX-1 signal is looped back to the network at the H2TU-C.
NREM 1110000 DSX-1 signal is looped back to the network at the H2TU-R.
COLB (a)
(a) Dual loopbacks are only initiated from the MODE and LBK button.
DSX-1 signal is looped back to the network at the H2TU-C and signal from the
customer is looped back to the customer at the H2TU-C.
RULB (b) DSX-1 signal is looped back to the network at the H2TU-R and signal from the
customer is looped back to the customer at the H2TU-R.
CREM 1111110 DS1 signal from customer is looped back to the customer at the H2TU-C.
CLOC 1111100 DS1 signal from customer is looped back to the customer at the H2TU-R.
SMJK 11000 DSX-1 signal is looped back to the network at the H2TU-R SmartJack module.
Loopdown 11100 Deactivates any of the above loopbacks.
To comply with the intrabuilding wiring requirements of
GR-1089 CORE, Section 4.5.9, the shields of the
ABAM-type cables that connect the H2TU-C-202 List 1F
DSX-1 output ports to the cross-connect panel must be
grounded at both ends.
Front Panel Alarm Messages (a)
(a) Front-panel alarm messages are listed in order of priority. ALRM displays prior to any alarm message.
Pressing the LBK button initiates an Alarm Cutoff (ACO) message.
Message Description (listed in priority order)
PWR FEED SHRT (b)
(b) Message displays repeatedly as long as the alarm condition exists and is not included in the priority order.
A short between the Tip and Ring of the HDSL2 pair.
PWR FEED GND (b) The HDSL2 loop is grounded.
PWR FEED OPEN (b) A line-power open condition.
SPNn-LOSW The HDSL2 loop has lost synchronization. The span closest to the network has
higher priority.
LLOS No signal is detected at the DSX-1 input to the H2TU-C.
RLOS No signal is detected at the DS1 input to the H2TU-R.
LAIS (c)
(c) Does not activate the alarm relay access pins 20 and 21.
Local Alarm Indication Signal.
RAIS (c) Remote Alarm Indication Signal.
TRCI An RAI alarm (yellow LED) from the CPE with an error-free signal from the line unit
or network.
RRAI An RAI alarm (yellow LED) from the Customer Premises Equipment (CPE) with
errors from the line unit or network.
xxx-DBER A system DS1 Bit Error Rate (BER) alarm. (xxx denotes either TUC or TUR.)
PRMF H2TU-R Performance Report Messaging BER threshold exceeded at far end.
PRMN H2TU-R Performance Report Messaging BER threshold exceeded at near end.
xxx-HBER A system HDSL2 Block Error Rate (BER) alarm. (xxx denotes either TUC or TUR.)
xxx-MAL The margin on the HDSL2 loop has dropped below the threshold setting. (xxx
denotes either TUC or TUR.)
xxx-LA The attenuation on the HDSL2 loop has exceeded the maximum threshold value.
(xxx denotes either TUC or TUR.)
Network
Customer
Premises
H2TU-C H2TU-R
TLOS
NLOC CREM CLOC
1111000 NREM
1110000 1111100
1111110
11000
SMJK
Front Panel Diagnostic Messages
Message Description
A=xx The loop attenuation of the longest (maximum loss) span, measured in dB.
ACQ The multiplexers of the HLU and H2TU-R are trying to establish synchronization.
ARM Armed to respond to Intelligent Repeater Loop (ILR) codes.
BAD RT? The H2TU-C is not receiving a response from the H2TU-R.
FERR A framing bit error occurred at H2TU-C DSX-1 input.
FLDL Flash download of firmware updates. (Contact Customer Service for update
procedures.)
HES H2TU-C HDSL2 loop cyclical redundancy check (CRC) error.
LBPV A local bipolar violation has been received at the DSX-1 input to the H2TU-C.
M=xx Indicates the power of the received HDSL2 signal relative to noise (S/N with respect to 21.5
dB). Any value of 6 dB or greater is adequate for reliable system operation.
MNGD The H2TU-C is under control of the HMU-319 network management unit.
PWR FEED OFF HDSL2 span power is turned off.
PWR FEED ON Indicates that the HDSL2 loop is not grounded or shorted.
SIG The transceivers of the H2TU-C and H2TU-R (or the H2TU-C and first regenerator) are
trying to establish contact with each other on Span 1 of the HDSL2 loop.
Front-Panel Read-Only Settings Using MODE
Message Description (Default selections in bold. To scroll, press the MODE button for 3
seconds.)
VER x.xx Software version number x.xx.
LIST xx List number of the H2TU-C-231.
FRM xxxx Frame (SF, ESF, UNFR).
CODE xxxx Line code setting (AMI or B8ZS).
LATT xx Loop Attenuation threshold setting (38).
MARG xx Margin threshold setting (4).
EQL Sets the DSX-1 Equalizer to: EXT (replaces internal equalizer with external equalizer), 0 (0
to 132 ft.), 133 (133 to 265 ft.), 266 (266 to 398 ft.), 399 (399 to 532 ft.), 533 (533 to 655
ft.).
RLBO Sets the H2TU-R line buildout to 0 dB, -7.5 dB, or -15 dB.
LPBK Enables (ENA) or disables (DIS) SmartJack loopback commands.
SPLB xxxx Configures system for generic (GNLB) or specialinbandloopback commands (A1LB,A2LB, A3LB,
A4LB, A5LB).
PWRF OFF = disables HDSL2 powering; ON = HDSL2 line voltage is -185 Vdc maximum.
HBER 1E-6 or 1E-7 = alarm activates when the HDSL2 BER alarm thresholdexceeds 10-6 or 10-7.
NONE = prevents generation of a system alarm due to BER.
DBER Enables (ENA) or disables (DIS) fixed 24-hour DSX-1 BER alarm threshold.
LBTO Loopback timeout = NONE, 20, 60, 120 minutes.
ALM Enables (ENA) or disables (DIS) alarm indications on pins 20 and 21.
DS1 DSX-1 line code = Bipolar with 8-Zero Substitution (B8ZS), Alternate Mark Inversion (AMI).
CONV H2TU-R frame format conversion = OFF (framing determined by the DS1 FRMG option),
ACON (autodetection of framing and potential frame conversion at the H2TU-R), or
FCON (autodetection of framing and forced frame format conversion at the H2TU-R).
FRMG DS1 frame formatting = AUTO (auto framing mode) or UNFR (unframed mode),
RDA Enables (ENA) or disables (DIS) alarm indications due to remote DS1 LOS at H2TU-R input.
ALMP Enables system to output an alarm pattern: Alarm Indication Signal (AIS) or Loss of Signal
(LOS).
BPVT Enables (ENA) or disables (DIS) Bipolar Violation Transparency (BPVT).
NLBP Enables the H2TU-R to transmit either AIS or LOS towards CI for any network loopback.
TLOS Enables (ENA) or disables (DIS) a logic loopback at the H2TU-R when an LOS occurs at its
DS1 input.
PRM OFF = no enhanced Performance Report Messaging; SPRM = Supplemental PRM;
NPRM = Network PRM; S + N = SPRM + NPRM.
NAIS If ALMP is set to AIS, this option specifies which pattern is sent to the network when a
remote LOS or AIS occurs. CI = AIS-CI sent to the network; AIS = AIS sent to the network.
ROVR Enables (ENA) or disables (DIS) conversion of an ESF DS1 payload from the network with
an embedded RAI pattern to an SF-RAI pattern toward the CI at the H2TU-R. CONV option
must be set to FCON or ACON.
RACI Enables (ENA) or disables (DIS) conversion of a DS1 RAI (yellow alarm) signal received by
the H2TU-R to be converted to an RAI-CI signal toward the network.
PBON Configures the power output levels of the HLU network unit toward the network.
PBOC Configures the power output levels of the H2TU-R customer unit toward the customer.

LOOPBACK TESTING
Initiate loopback testing from the HiGain maintenance terminal screen or use the MODE
and LBK buttons. The inband codes below (except COLB, and RULB) can also be sent by
a test set.
For more information about the HiGain HDSL2 maintenance screens, refer to the
H2TU-C-202 List 1F technical practice, document number 152-202-116-xx. Contact
Customer Service to obtain a copy of the practice.
RS-232 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 H2TU-C craft port.
9600 baud
8 data bits
No parity
1 stop bit
Hardware flow control: OFF
Terminal emulation: VT100
MaintenanceTerminal Modem Settings
Card-edge Connector
Reports the following conditions:
• Green LED:
Normal operation
• Red LED:
Fuse alarm
• Flashing Red LED:
HDSL2 acquisition or
system alarm
•Yellow LED:
Customer remote (CREM) or
network local (NLOC) loopback
is in effect
• Off:
Line power is off
Front-panel display
Status LED
Displays status, provisioning,
and alarm messages. See tables
below for message descriptions.
27
25
23
21
19
17
15
13
11
9
7
3
5
1
Management bus
Burnin/ Factory use only
Circuit ground
(-)
(+)
DSX-1In
Tip
Fusealarm
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.
HDSL2Span
DSX-1Out
-48Vdc Local power
Chassis ground*
Alarm
Ring1
Tip1
Tip
Ring
Ring
Factoryuseonly
* Chassis ground may be connected to Earth ground per local practice.
HiGain
HDSL2
XMT
D
S
X
1
BRG
RCV
H
2
T
U
*
C
2
0
2
H
D
S
L
2
M
O
D
E
STATUS
L
B
K
RS-232
DCE
L1F
List number
Mode and LBK system option buttons
Use the MODE and LBK buttons to review all system
parameters, including user-configured settings, and to
activate loopbacks.
To display system parameters: Press the MODE button
for at least 3 seconds to place the front-panel display in
scroll mode.When it has finished scrolling through all the
system parameters, the display returns to its normal mode.
To initiate a dual loopback: Press the LBK button for
more than 3 seconds to activate both the NLOC and
CREM loopbacks.If a loopback condition already exists,
this will loopdown all existing loopbacks.Press the LBK
button again for more than 3 seconds to reactivate the
dual loopback.
To initiate a manual loopback:
DSX-1 access jacks
Connect standard test equipment.
• BRG
Provides non-intrusive bridging jack
access to (XMT) and from (RCV)
the HDSL2 span at the DSX-1 interface.
Allows monitoring of the DS1 payloads.
1Press both MODE and LBK buttons for at least
5 seconds.The following message appears:
2 Press LBK to activate the NLOC loopback or press
MODE to advance to the next loopback selection.
MAN LBK NLO?
To initiate a manual loopback: Press both
MODE and LBK buttons for 3 or more seconds.
GNLB Loopback Commands
Loopback Inband Code Description
NLOC 1111000 DSX-1 signal is looped back to the network at the H2TU-C.
NREM 1110000 DSX-1 signal is looped back to the network at the H2TU-R.
COLB (a)
(a) Dual loopbacks are only initiated from the MODE and LBK button.
DSX-1 signal is looped back to the network at the H2TU-C and signal from the
customer is looped back to the customer at the H2TU-C.
RULB (b) DSX-1 signal is looped back to the network at the H2TU-R and signal from the
customer is looped back to the customer at the H2TU-R.
CREM 1111110 DS1 signal from customer is looped back to the customer at the H2TU-C.
CLOC 1111100 DS1 signal from customer is looped back to the customer at the H2TU-R.
SMJK 11000 DSX-1 signal is looped back to the network at the H2TU-R SmartJack module.
Loopdown 11100 Deactivates any of the above loopbacks.
To comply with the intrabuilding wiring requirements of
GR-1089 CORE, Section 4.5.9, the shields of the
ABAM-type cables that connect the H2TU-C-202 List 1F
DSX-1 output ports to the cross-connect panel must be
grounded at both ends.
Front Panel Alarm Messages (a)
(a) Front-panel alarm messages are listed in order of priority. ALRM displays prior to any alarm message.
Pressing the LBK button initiates an Alarm Cutoff (ACO) message.
Message Description (listed in priority order)
PWR FEED SHRT (b)
(b) Message displays repeatedly as long as the alarm condition exists and is not included in the priority order.
A short between the Tip and Ring of the HDSL2 pair.
PWR FEED GND (b) The HDSL2 loop is grounded.
PWR FEED OPEN (b) A line-power open condition.
SPNn-LOSW The HDSL2 loop has lost synchronization. The span closest to the network has
higher priority.
LLOS No signal is detected at the DSX-1 input to the H2TU-C.
RLOS No signal is detected at the DS1 input to the H2TU-R.
LAIS (c)
(c) Does not activate the alarm relay access pins 20 and 21.
Local Alarm Indication Signal.
RAIS (c) Remote Alarm Indication Signal.
TRCI An RAI alarm (yellow LED) from the CPE with an error-free signal from the line unit
or network.
RRAI An RAI alarm (yellow LED) from the Customer Premises Equipment (CPE) with
errors from the line unit or network.
xxx-DBER A system DS1 Bit Error Rate (BER) alarm. (xxx denotes either TUC or TUR.)
PRMF H2TU-R Performance Report Messaging BER threshold exceeded at far end.
PRMN H2TU-R Performance Report Messaging BER threshold exceeded at near end.
xxx-HBER A system HDSL2 Block Error Rate (BER) alarm. (xxx denotes either TUC or TUR.)
xxx-MAL The margin on the HDSL2 loop has dropped below the threshold setting. (xxx
denotes either TUC or TUR.)
xxx-LA The attenuation on the HDSL2 loop has exceeded the maximum threshold value.
(xxx denotes either TUC or TUR.)
Network
Customer
Premises
H2TU-C H2TU-R
TLOS
NLOC CREM CLOC
1111000 NREM
1110000 1111100
1111110
11000
SMJK
Front Panel Diagnostic Messages
Message Description
A=xx The loop attenuation of the longest (maximum loss) span, measured in dB.
ACQ The multiplexers of the HLU and H2TU-R are trying to establish synchronization.
ARM Armed to respond to Intelligent Repeater Loop (ILR) codes.
BAD RT? The H2TU-C is not receiving a response from the H2TU-R.
FERR A framing bit error occurred at H2TU-C DSX-1 input.
FLDL Flash download of firmware updates. (Contact Customer Service for update
procedures.)
HES H2TU-C HDSL2 loop cyclical redundancy check (CRC) error.
LBPV A local bipolar violation has been received at the DSX-1 input to the H2TU-C.
M=xx Indicates the power of the received HDSL2 signal relative to noise (S/N with respect to 21.5
dB). Any value of 6 dB or greater is adequate for reliable system operation.
MNGD The H2TU-C is under control of the HMU-319 network management unit.
PWR FEED OFF HDSL2 span power is turned off.
PWR FEED ON Indicates that the HDSL2 loop is not grounded or shorted.
SIG The transceivers of the H2TU-C and H2TU-R (or the H2TU-C and first regenerator) are
trying to establish contact with each other on Span 1 of the HDSL2 loop.
Front-Panel Read-Only Settings Using MODE
Message Description (Default selections in bold. To scroll, press the MODE button for 3
seconds.)
VER x.xx Software version number x.xx.
LIST xx List number of the H2TU-C-231.
FRM xxxx Frame (SF, ESF, UNFR).
CODE xxxx Line code setting (AMI or B8ZS).
LATT xx Loop Attenuation threshold setting (38).
MARG xx Margin threshold setting (4).
EQL Sets the DSX-1 Equalizer to: EXT (replaces internal equalizer with external equalizer), 0 (0
to 132 ft.), 133 (133 to 265 ft.), 266 (266 to 398 ft.), 399 (399 to 532 ft.), 533 (533 to 655
ft.).
RLBO Sets the H2TU-R line buildout to 0 dB, -7.5 dB, or -15 dB.
LPBK Enables (ENA) or disables (DIS) SmartJack loopback commands.
SPLB xxxx Configures system for generic (GNLB) or specialinbandloopback commands (A1LB,A2LB, A3LB,
A4LB, A5LB).
PWRF OFF = disables HDSL2 powering; ON = HDSL2 line voltage is -185 Vdc maximum.
HBER 1E-6 or 1E-7 = alarm activates when the HDSL2 BER alarm thresholdexceeds 10-6 or 10-7.
NONE = prevents generation of a system alarm due to BER.
DBER Enables (ENA) or disables (DIS) fixed 24-hour DSX-1 BER alarm threshold.
LBTO Loopback timeout = NONE, 20, 60, 120 minutes.
ALM Enables (ENA) or disables (DIS) alarm indications on pins 20 and 21.
DS1 DSX-1 line code = Bipolar with 8-Zero Substitution (B8ZS), Alternate Mark Inversion (AMI).
CONV H2TU-R frame format conversion = OFF (framing determined by the DS1 FRMG option),
ACON (autodetection of framing and potential frame conversion at the H2TU-R), or
FCON (autodetection of framing and forced frame format conversion at the H2TU-R).
FRMG DS1 frame formatting = AUTO (auto framing mode) or UNFR (unframed mode),
RDA Enables (ENA) or disables (DIS) alarm indications due to remote DS1 LOS at H2TU-R input.
ALMP Enables system to output an alarm pattern: Alarm Indication Signal (AIS) or Loss of Signal
(LOS).
BPVT Enables (ENA) or disables (DIS) Bipolar Violation Transparency (BPVT).
NLBP Enables the H2TU-R to transmit either AIS or LOS towards CI for any network loopback.
TLOS Enables (ENA) or disables (DIS) a logic loopback at the H2TU-R when an LOS occurs at its
DS1 input.
PRM OFF = no enhanced Performance Report Messaging; SPRM = Supplemental PRM;
NPRM = Network PRM; S + N = SPRM + NPRM.
NAIS If ALMP is set to AIS, this option specifies which pattern is sent to the network when a
remote LOS or AIS occurs. CI = AIS-CI sent to the network; AIS = AIS sent to the network.
ROVR Enables (ENA) or disables (DIS) conversion of an ESF DS1 payload from the network with
an embedded RAI pattern to an SF-RAI pattern toward the CI at the H2TU-R. CONV option
must be set to FCON or ACON.
RACI Enables (ENA) or disables (DIS) conversion of a DS1 RAI (yellow alarm) signal received by
the H2TU-R to be converted to an RAI-CI signal toward the network.
PBON Configures the power output levels of the HLU network unit toward the network.
PBOC Configures the power output levels of the H2TU-R customer unit toward the customer.

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
H2TU-C-202 LIST 1F
TheHiGain®HDSL2 product family is the industry’s first practical implementation of
High-bit-rate Digital Subscriber Line 2 (HDSL2). When an H2TU-C line unit is used
in conjunction with a HiGain ™HDSL2 remote unit (H2TU-R), the system provides
1.552 Mbps transmission on one unconditioned copper pair over the full Carrier
Service Area (CSA) range. The CSA includes loops up to 12,000 feet of 24 AWG wire
or 9,000 feet of 26 AWG wire, including bridged taps.
FEATURES
SPECIFICATIONS
•Front-panel status LED, craft port, and
four-character status display •Payload (PL) or HiGain (HG) loopback source identification
•Ultra-low wander •Bipolar Violation Transparency (BPVT) option
•Loss of Signal (LOS)/Alarm Indication Signal
(AIS) payload alarm option •Performance Report Messaging (SPRM and NPRM)
•Grounded loop detection •Bit Error Rate (BER) alarm option
•Dual loopback commands •Power Back Off (PBON and PBOC) for
configuring power output levels
•Maintenance screens for inventory,
provisioning, troubleshooting, and
performance monitoring
•Remote provisioning through TL1, FSL, or
11-bit payload commands
Operating Temperature -40 °F to +149 °F (-40 °C to +65 °C)
Operating Humidity 5% to 95% non-condensing
HDSL2 Span Voltage 0, -185 Vdc
Mounting 220 mechanics high-density shelf
HDSL2 Line Rate 1.552 Mbps Overlapped Pulse Amplitude Modulation Transmission
with Interlocking Spectra (OPTIS)
HDSL2 Output +16.8 dBm ±0.5 dB, 135 Ωat CO side
+16.5 dBm ±0.5 dB, 135 Ωat remote side
Maximum Loop Attenuation 35 dB at 196 KHz, 135 Ω
DSX-1 Line Rate 1.544 Mbps ±200 bps
DSX-1 Line Format Alternate Mark Inversion (AMI) or Bipolar with 8-Zero Substitution (B8ZS)
DSX-1 Frame Format Extended SuperFrame (ESF), SuperFrame (SF), or Unframed (UNFR)
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 H2TU-C, align the H2TU-C with the enclosure
slot guides and slide the unit in. When the unit is properly seated, the retaining latch
snaps closed.
POWER-UP SEQUENCE
When the H2TU-C powers up, the four-character display illuminates and reports
status messages.
If the H2TU-C is unable to communicate with the next span device, it displays various
alarm and status messages.
If the unit is able to communicate with the next span device, the following occurs:
1The Status LED flashes red, while acquiring each device in the system, and turns
steady green when the entire system is operating with no alarms. The DS1 signal
must be present.
2Thefour-characterdisplayreportsmargin(SNR)readings(shouldbe≥6dB)and
loop attenuation (should be <35 dB @196 KHz).
3Any alarm conditions that exist after the system powers up are reported on the
display. The HLU reports alarms if no DS1 signal is applied.
PROVISIONING
After installing the H2TU-C, perform these basic provisioning tasks by accessing the
HiGain HDSL2 logon screen. Refer to the onscreen Help menu for navigational aids.
1Connect a maintenance terminal to the craft port (see front-panel illustration
inside), then press + to refresh the logon screen, if necessary.
2Select the Config menu, Date and Time, then type the date and time.
3Select the Inventory menu, then type in the unit ID numbers.
4Change the settings of any system parameters, if necessary, by selecting the
Config menu, Standard Options or ADC Options.
5Once the H2TU-C is successfully installed and provisioned, access the Monitor,
Performance, or Event Log menu to clear the Performance, Alarm History, or
Event Log screens, or use Master Clear in the Config menu.
Continued
CTRL R
Þ
L
HiGain
HDSL2
H
D
S
L
2
M
O
D
E
STATUS
RS-232
DCE
L
B
K
H
2
T
U
•
C
2
0
2
XMT
BRG
D
S
X
1RCV
1F
H2TU-C-202 LIST 1F
LINE UNIT
QUICK INSTALLATION
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1213090
October 2, 2000
Product Catalog: 150-2402-16
CLEI: VACHVW8C
Document: 352-202-116-02