ADC HDSL4 Original operating instructions
DNV C ertificatio n, Inc.
REGISTERED FIRM
ISO 9001/TL 9000
HDSL4
HDSL4
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-60950/CSA-C22.2 No. 60950-00: Safety of Information Technology
Equipment
Trademark Information
ADC is a registered trademark of ADC Telecommunications, 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
© 2003 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.
World Headquarters
ADC Telecommunications, Inc.
PO Box 1101
Minneapolis, MN 55440-1101
Technical Assistance
Tel: 800.366.3891
H4TU-C-388 LIST 1
The H4TU-C-388 List 1 line unit is the Central Office (CO) side of a T1 transmission
system. The H4TU-C, when used with an H4TU-R remote unit, transmits a
1.544 Mbps payload a maximum distance of 12 kft. over two unconditioned copper
pairs. Using two doublers (H4Ds), the Carrier Service Area (CSA) reach can be
extended to a maximum of 34 kft. (See Specifications below.)
The H4TU-C-388 List 1 is designed to mount in Double Dual Module Plus (DDM+)
high-density shelves.
FEATURES
SPECIFICATIONS
Front-panel features: status LED, craft port,
MODE and SEL pushbuttons for setting system
parameters and activating loopback commands
(including dual loopbacks), DSX-1 test jacks, and
a four-character status display
HDSL4 transmission features:
•Doubler (HD4) support for up to three spans
•Grounded loop detection on HDSL4 spans
•Bit Error Rate Tester (BERT)
•Spectrum compatibility with ADSL services
Maintenance screens for inventory,
provisioning, performance monitoring, and
troubleshooting, including:
•Remote provisioning
•Loop attenuation and insertion loss reporting
•Power Back Off (PBON and PBOC) for
configuring HDSL4 transmit power levels to
reduce crosstalk
•Report menu option for downloading status
and performance data
Sources sealing current when connected to any
locally powered H4TU-R-402
Operating Temperature -40°F to +149°F (-40°C to +65°C)
Operating Humidity 5% to 95% non-condensing
CSA Reach 34 kft. maximum using 26 AWG: 12 kft. (Span 1), 11 kft. each (Spans 2 and 3)
CO Supply -48 Vdc nominal (-42.5 to -56.5 Vdc)
HDSL4 Span Voltage 0, -185 Vdc, +123 Vdc (voltage is applied across Loop 1 and Loop 2)
Mounting Double Dual Module Plus (DDM+) high-density
HDSL4 Line Rate 784 kbps Overlapped Pulse Amplitude Modulation (OPAM) transmission per pair
HDSL4 Output +14.1 dBm ±0.5 dB, 135Ω
Maximum Insertion
Loss
Span 1 = 47 dB at 196 kHz
Span 2 and Span 3 = 43 dB at 196 kHz
Maximum Loop
attenuation
Span 1 = 31 dB
Span 2 and Span 3 = 29 dB
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 6Vpk-pk, pre-equalized for 0 to 655 feet of ABAM cable
INSTALLATION
Align the H4TU-C with the shelf card-slot guides and slide the unit in. Press down on
the front panel to snap the H4TU-C into place.
POWER-UP SEQUENCE
When the H4TU-C powers up, the four-character display illuminates and displays
status messages.
If the H4TU-C is unable to communicate with the next span device, it displays
appropriate alarm and status messages.
If the H4TU-C is able to communicate with the next span device, the following events
occur:
•The Status LED flashes red while the H4TU-C acquires each device in the
system, and then turns steady green when the entire system is operating with no
alarms (the DS1 signal must be present).
•The front panel display reports signal-to-noise ratio (SNR) margin readings
(should be ≥6 dB) and loop attenuation (should be ≤34 dB).
•The front panel display reports any alarm conditions that exist after the system
powers up (the H4TU-C reports alarms if no DS1 signal is applied).
PROVISIONING
Perform these basic provisioning tasks:
1Connect a maintenance terminal to the craft port (see front-panel illustration
inside) and log on. Press + to refresh the logon screen, if necessary.
Refer to the onscreen Help menu for navigational aids or use the (to
cycle through selections), (to activate the current setting, choice, or to
display a menu), or (to return to the parent menu), or directional
arrow keys (to navigate to a menu or item)
2Select the Config menu, Date and Time, then type the date and time.
3Select the Inventory screen, then type in the unit ID numbers.
4Change system parameter settings, if necessary, by selecting the Config menu,
then Standard Options or ADC Options. (Configuration options can also be set
from the front panel using the MODE and SEL buttons. See the Table 4 inside.)
5Once the H4TU-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
SPACEBAR
ENTER
ESC F11
Ä
Product Catalog: H4TU-C-388-L1
CLEI: VACJSKPE
Document: LTPH-QI-1123-03
´,j7¶79¨
1274237
September 12, 2003
QUICK INSTALLATION
H4TU-C-388 LIST 1
LINE UNIT
DNV C ertificatio n, Inc.
REGISTERED FIRM
ISO 9001/TL 9000
HDSL4
HDSL4
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-60950/CSA-C22.2 No. 60950-00: Safety of Information Technology
Equipment
Trademark Information
ADC is a registered trademark of ADC Telecommunications, 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
© 2003 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.
World Headquarters
ADC Telecommunications, Inc.
PO Box 1101
Minneapolis, MN 55440-1101
Technical Assistance
Tel: 800.366.3891
H4TU-C-388 LIST 1
The H4TU-C-388 List 1 line unit is the Central Office (CO) side of a T1 transmission
system. The H4TU-C, when used with an H4TU-R remote unit, transmits a
1.544 Mbps payload a maximum distance of 12 kft. over two unconditioned copper
pairs. Using two doublers (H4Ds), the Carrier Service Area (CSA) reach can be
extended to a maximum of 34 kft. (See Specifications below.)
The H4TU-C-388 List 1 is designed to mount in Double Dual Module Plus (DDM+)
high-density shelves.
FEATURES
SPECIFICATIONS
Front-panel features: status LED, craft port,
MODE and SEL pushbuttons for setting system
parameters and activating loopback commands
(including dual loopbacks), DSX-1 test jacks, and
a four-character status display
HDSL4 transmission features:
•Doubler (HD4) support for up to three spans
•Grounded loop detection on HDSL4 spans
•Bit Error Rate Tester (BERT)
•Spectrum compatibility with ADSL services
Maintenance screens for inventory,
provisioning, performance monitoring, and
troubleshooting, including:
•Remote provisioning
•Loop attenuation and insertion loss reporting
•Power Back Off (PBON and PBOC) for
configuring HDSL4 transmit power levels to
reduce crosstalk
•Report menu option for downloading status
and performance data
Sources sealing current when connected to any
locally powered H4TU-R-402
Operating Temperature -40°F to +149°F (-40°C to +65°C)
Operating Humidity 5% to 95% non-condensing
CSA Reach 34 kft. maximum using 26 AWG: 12 kft. (Span 1), 11 kft. each (Spans 2 and 3)
CO Supply -48 Vdc nominal (-42.5 to -56.5 Vdc)
HDSL4 Span Voltage 0, -185 Vdc, +123 Vdc (voltage is applied across Loop 1 and Loop 2)
Mounting Double Dual Module Plus (DDM+) high-density
HDSL4 Line Rate 784 kbps Overlapped Pulse Amplitude Modulation (OPAM) transmission per pair
HDSL4 Output +14.1 dBm ±0.5 dB, 135Ω
Maximum Insertion
Loss
Span 1 = 47 dB at 196 kHz
Span 2 and Span 3 = 43 dB at 196 kHz
Maximum Loop
attenuation
Span 1 = 31 dB
Span 2 and Span 3 = 29 dB
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 6Vpk-pk, pre-equalized for 0 to 655 feet of ABAM cable
INSTALLATION
Align the H4TU-C with the shelf card-slot guides and slide the unit in. Press down on
the front panel to snap the H4TU-C into place.
POWER-UP SEQUENCE
When the H4TU-C powers up, the four-character display illuminates and displays
status messages.
If the H4TU-C is unable to communicate with the next span device, it displays
appropriate alarm and status messages.
If the H4TU-C is able to communicate with the next span device, the following events
occur:
•The Status LED flashes red while the H4TU-C acquires each device in the
system, and then turns steady green when the entire system is operating with no
alarms (the DS1 signal must be present).
•The front panel display reports signal-to-noise ratio (SNR) margin readings
(should be ≥6 dB) and loop attenuation (should be ≤34 dB).
•The front panel display reports any alarm conditions that exist after the system
powers up (the H4TU-C reports alarms if no DS1 signal is applied).
PROVISIONING
Perform these basic provisioning tasks:
1Connect a maintenance terminal to the craft port (see front-panel illustration
inside) and log on. Press + to refresh the logon screen, if necessary.
Refer to the onscreen Help menu for navigational aids or use the (to
cycle through selections), (to activate the current setting, choice, or to
display a menu), or (to return to the parent menu), or directional
arrow keys (to navigate to a menu or item)
2Select the Config menu, Date and Time, then type the date and time.
3Select the Inventory screen, then type in the unit ID numbers.
4Change system parameter settings, if necessary, by selecting the Config menu,
then Standard Options or ADC Options. (Configuration options can also be set
from the front panel using the MODE and SEL buttons. See the Table 4 inside.)
5Once the H4TU-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
SPACEBAR
ENTER
ESC F11
Ä
Product Catalog: H4TU-C-388-L1
CLEI: VACJSKPE
Document: LTPH-QI-1123-03
´,j7¶79¨
1274237
September 12, 2003
QUICK INSTALLATION
H4TU-C-388 LIST 1
LINE UNIT
DNV C ertificatio n, Inc.
REGISTERED FIRM
ISO 9001/TL 9000
HDSL4
HDSL4
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-60950/CSA-C22.2 No. 60950-00: Safety of Information Technology
Equipment
Trademark Information
ADC is a registered trademark of ADC Telecommunications, 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
© 2003 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.
World Headquarters
ADC Telecommunications, Inc.
PO Box 1101
Minneapolis, MN 55440-1101
Technical Assistance
Tel: 800.366.3891
H4TU-C-388 LIST 1
The H4TU-C-388 List 1 line unit is the Central Office (CO) side of a T1 transmission
system. The H4TU-C, when used with an H4TU-R remote unit, transmits a
1.544 Mbps payload a maximum distance of 12 kft. over two unconditioned copper
pairs. Using two doublers (H4Ds), the Carrier Service Area (CSA) reach can be
extended to a maximum of 34 kft. (See Specifications below.)
The H4TU-C-388 List 1 is designed to mount in Double Dual Module Plus (DDM+)
high-density shelves.
FEATURES
SPECIFICATIONS
Front-panel features: status LED, craft port,
MODE and SEL pushbuttons for setting system
parameters and activating loopback commands
(including dual loopbacks), DSX-1 test jacks, and
a four-character status display
HDSL4 transmission features:
•Doubler (HD4) support for up to three spans
•Grounded loop detection on HDSL4 spans
•Bit Error Rate Tester (BERT)
•Spectrum compatibility with ADSL services
Maintenance screens for inventory,
provisioning, performance monitoring, and
troubleshooting, including:
•Remote provisioning
•Loop attenuation and insertion loss reporting
•Power Back Off (PBON and PBOC) for
configuring HDSL4 transmit power levels to
reduce crosstalk
•Report menu option for downloading status
and performance data
Sources sealing current when connected to any
locally powered H4TU-R-402
Operating Temperature -40°F to +149°F (-40°C to +65°C)
Operating Humidity 5% to 95% non-condensing
CSA Reach 34 kft. maximum using 26 AWG: 12 kft. (Span 1), 11 kft. each (Spans 2 and 3)
CO Supply -48 Vdc nominal (-42.5 to -56.5 Vdc)
HDSL4 Span Voltage 0, -185 Vdc, +123 Vdc (voltage is applied across Loop 1 and Loop 2)
Mounting Double Dual Module Plus (DDM+) high-density
HDSL4 Line Rate 784 kbps Overlapped Pulse Amplitude Modulation (OPAM) transmission per pair
HDSL4 Output +14.1 dBm ±0.5 dB, 135Ω
Maximum Insertion
Loss
Span 1 = 47 dB at 196 kHz
Span 2 and Span 3 = 43 dB at 196 kHz
Maximum Loop
attenuation
Span 1 = 31 dB
Span 2 and Span 3 = 29 dB
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 6Vpk-pk, pre-equalized for 0 to 655 feet of ABAM cable
INSTALLATION
Align the H4TU-C with the shelf card-slot guides and slide the unit in. Press down on
the front panel to snap the H4TU-C into place.
POWER-UP SEQUENCE
When the H4TU-C powers up, the four-character display illuminates and displays
status messages.
If the H4TU-C is unable to communicate with the next span device, it displays
appropriate alarm and status messages.
If the H4TU-C is able to communicate with the next span device, the following events
occur:
•The Status LED flashes red while the H4TU-C acquires each device in the
system, and then turns steady green when the entire system is operating with no
alarms (the DS1 signal must be present).
•The front panel display reports signal-to-noise ratio (SNR) margin readings
(should be ≥6 dB) and loop attenuation (should be ≤34 dB).
•The front panel display reports any alarm conditions that exist after the system
powers up (the H4TU-C reports alarms if no DS1 signal is applied).
PROVISIONING
Perform these basic provisioning tasks:
1Connect a maintenance terminal to the craft port (see front-panel illustration
inside) and log on. Press + to refresh the logon screen, if necessary.
Refer to the onscreen Help menu for navigational aids or use the (to
cycle through selections), (to activate the current setting, choice, or to
display a menu), or (to return to the parent menu), or directional
arrow keys (to navigate to a menu or item)
2Select the Config menu, Date and Time, then type the date and time.
3Select the Inventory screen, then type in the unit ID numbers.
4Change system parameter settings, if necessary, by selecting the Config menu,
then Standard Options or ADC Options. (Configuration options can also be set
from the front panel using the MODE and SEL buttons. See the Table 4 inside.)
5Once the H4TU-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
SPACEBAR
ENTER
ESC F11
Ä
Product Catalog: H4TU-C-388-L1
CLEI: VACJSKPE
Document: LTPH-QI-1123-03
´,j7¶79¨
1274237
September 12, 2003
QUICK INSTALLATION
H4TU-C-388 LIST 1
LINE UNIT
LOOPBACK TESTING
Initiate loopback testing from the maintenance menus or use the MODE and SEL
pushbuttons. Testing can also be initiated by usinga test set to send inband codes (Table 1).
Refer to the user manual, document number LTPH-UM-1122-xx, for more information.
Front Panel
List number
CLEI/ECI bar code label
Craft port provisioning
To access all system maintenance, provisioning and
screens, connect a standard 9-pin terminal cable between the
serial port on a PC and the H4TU-C-388 craft port.
performance
Four-character display
Displays status, provisioning, and alarm messages.
See tables belowfor a list of message descriptions.
DSX-1 bridging jacks
Status LED
A Customer Remote (CREM)
loopback or a Network Local
(NLOC) loopback is in effect.
Green LED Normal operation.
HDSL4 acquisition or
system alarm.
Red LED Fuse alarm.
Flashing Red LED
Yellow LED
FlashingYellow LED System is in Armed (ARM)
mode.
Off Line power is off.
(on PC board)
Configuration number
H
4
T
U
•
3
8
8
C
M
O
D
E
S
E
L
D
S
1
D
S
1
BRG
I
N
I
N
O
U
T
O
U
T
RS-232
DCE
L1
MaintenanceTerminal Modem Settings
9600 baud
8 data bits
No parity
1 stop bit
Hardware flow control:OFF
Terminal emulation software:VT100
Card handle
Lift to release.
Lower to secure H4TU-C.
Card-edge Connector
* Fuse alarm is normally floating (0 to 80V max.) and
at -48V (10 mA max.) when activated.
106
105
104
103
102
101
100
DSX-1OUT
DSX-1IN
205
204
203
202
201
200
119
118
117
116
115
114
113
112
111
110
GND GND
FrameGND
Fusealarm*
Ring1
Tip1
Factoryuseonly
Ring
Tip
Factoryburn-in
-48Vdc
219
218
217
216
215
214
213
212
211
210
209
208
207
206
109
108
107
HDSL4Loop1
RingA
TipA
HDSL4Loop2
RingB
TipB
STAT
MODE and SEL pushbuttons (for manual
setting of system parameters)
Use MODE and SEL to manually modify user options,
oopbacks, and display DSX-1 line parameters. initiate
l
1
2
3
4
Press the MODE pushbutton for 1 second and release.
The front panel alternately displays the first system
parameter and its current setting.
Press SEL to step through all possible settings for
the displayed parameter.
Press MODE to update the parameter and advance
to the next parameter.
After scrolling through all the parameters, press SEL
to confirm changes when prompted with a CONF NO
message, or press MODE to cancel all changes. Provides non-intrusive bridging jack access to (IN) and from
(OUT) the HDSL4 span at the DSX-1 interface. Allows monitoring
of the DS1 payloads.
To initiate a manual loopback:
1
Press both the MODE and SEL pushbuttons for at least
3 seconds.The following message appears:
Press SEL to activate the NLOC loopback or press
MODE to select the next available loopback.
, press both the
MODE and SEL pushbuttons for 3 or more seconds
MAN LPBK NLO?
2
To manually terminate a loopback
(inside handle)
Table 1. GNLB Loopback Commands
Loopback Inband Code Description
NLOC 1111000 DSX-1 signal is looped back to the network at the H4TU-C.
NREM 1110000 DSX-1 signal is looped back to the network at the H4TU-R.
CLOC 1111100 DS1 signal from customer is looped back to the customer at the H4TU-R.
CREM 1111110 DS1 signal from customer is looped back to the customer at the H4TU-C.
NDU1 110000 Signal is looped back to the network at H4D1.
NDU2 111000 Signal is looped back to the network at H4D2.
CDU1 111100 Signal from customer is looped back to the customer at H4D1.
CDU2 111110 Signal from customer is looped back to the customer at H4D2.
SMJK 11000 DSX-1 signal is looped back to the network at the H4TU-R SmartJack module.
Loopdown 11100 Deactivates any of the above loopbacks.
Table 2. 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
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 Loop 1 and Loop 2 of the HDSL4 pairs.
PWR FEED GND (b) The HDSL4 loop is grounded.
PWR FEED OPEN (b) A line-power open condition.
SPNn-LOSW The HDSL4 loop has lost synchronization. The span closest to the network has
highest priority. (n= span number)
LLOS No signal is detected at the DSX-1 input to the H4TU-C.
RLOS No signal is detected at the DS1 input to the H4TU-R.
LAIS Line Alarm Indication Signal.
RAIS Remote Alarm Indication Signal.
LRAI An RAI alarm (yellow) from the Customer Premises Equipment (CPE) with an
error-free signal from the line unit or network. RAI signal is transmitted towards the
network.
RRAI An RAI alarm (yellow) from the CPE with errors from the line unit or network.
xxx-LOF DS1 input does not contain the ESF or SF frame pattern setting of the FRMG option.
(xxx denotes either Transmission Unit Central Office [TUC] or Transmission Unit
Remote End [TUR]).
xxx-DBER A system DS1 Bit Error Rate (DBER) alarm (xxx denotes either TUC or TUR).
PRMF H4TU-R Performance Report Messaging BER threshold exceeded at far end.
PRMN H4TU-R Performance Report Messaging BER threshold exceeded at near end.
xxxx-HBRx(c)
(c) The xxxx prefix denotes TUC, TUR, or a first or second doubler interface, upstream or downstream (DUxU
or DUxD, where x= Doubler 1 or 2). The single xsuffix denotes Loop 1 or Loop 2.
A system HDSL4 Block Error Rate (HBER) alarm.
xxxx-MALx(c) The margin on the HDSL4 loop has dropped below the threshold setting.
xxxx-LAx(c) The attenuation on the HDSL4 loop has exceeded the maximum threshold value.
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 H4TU-C-388 List 1 DSX-1 output ports to the
cross-connect panel must be grounded at both ends.
Network Customer
Premises
NLOC NDU1 NDU2 CLOC
CDU1 CDU2CREM NREM
TLOS*
H4TU-C H4D1 H4D2 H4TU-R
SMJK
DS1
DSX-1
*
When enabled,TLOS is an automatic loopback
that occurs with an LOS at the remote DS1 input.
Span 1 Span 2 Span 3
Downstream Upstream
Table 3. Front Panel Diagnostic Messages
Message (a)
(a) Normal operating messages are in bold.
Description
A=xx The Attenuation (A) message appears followed by xx, where xx is the highest loop
attenuation of all HDSL interfaces.
ACQ1 or ACQ2 The multiplexers of the H4TU-C and H4TU-R are trying to establish synchronization over
HDSL4 Loop 1 or Loop 2.
ARM Armed to respond to Intelligent Repeater Loop (ILR) codes.
BAD RT? The H4TU-C has not received a response from the H4TU-R.
FERR A framing bit error has occurred at H4TU-C DSX-1 input.
HxES H4TU-C HDSL4 Loop 1 or Loop 2 Cyclical Redundancy Check (CRC) error. (Loop 1 has
display priority over Loop 2.)
LBPV A local bipolar violation has been received at the DSX-1 input to the H4TU-C.
1=xx or
2=xx
Power of the received HDSL4 signal on each loop relative to noise (S/N with respect to
21.5 dB). (xx denotes lowest margin in dB for Loop 1 and Loop 2.)
PWR FEED OFF HDSL4 span power is off.
PWR FEED ON HDSL4 loop is not grounded or shorted.
SIG1 or SIG2 H4TU-C and H4TU-R transceivers are trying to establish contact with each other over
HDSL4 Loop 1 or Loop 2.
Table 4. Front-Panel Configuration Options Using MODE and SEL(a)
(a) Front-panel configuration options display in the order listed.
Message (b)
(b) Normal operating messages are in bold.
Description
EQL Sets the DSX-1 equalizer to: 0 (0 to 133 ft.), 133 (133 to 266 ft.), 266 (266 to 399 ft.),
399 (399 to 533 ft.), 533 (533 to 655 ft.).
RLBO Sets the H4TU-R line buildout to 0 dB, -7.5 dB, or -15 dB.
LPBK Enables (ENA) or disables (DIS) SmartJack loopback commands.
PWRF OFF = disables line power; AUTO = -185 Vdc or ±123 Vdc (depending on number of
downstream units detected); LOW = -185 Vdc; and HIGH = ±123 Vdc.
HBER 1E-6 or 1E-7 = alarm activates when the HDSL4 BER alarm threshold exceeds 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 min, 60 min, 120 min, 8 hr, and 24 hr.
DS1 DSX-1 line code = AUTO, B8ZS, or AMI.
FRMG DS1 frame formatting mode = AUTO (automatic framing), SF (SuperFrame), ESF (Extended
SuperFrame), or UNFR (unframed).
RDA Enables (ENA) or disables (DIS) alarm indications due to remote DS1 LOS at the H4TU-R
input.
ALMP Enables system to output an alarm pattern: AIS or LOS.
BPVT Enables (ENA) or disables (DIS) Bipolar Violation Transparency.
NLBP Enables the H4TU-R to transmit either AIS or LOS towards the CI for any network loopback.
TLOS Enables (ENA) or disables (DIS) a logic loopback at the H4TU-R when an LOS occurs at its
DS1 input.
RTPV Enables (ENA) or disables (DIS) remote provisioning.
PBON Configures the power output levels of the H4TU-C network unit toward the customer to
comply with Default (DEF) or Enhanced (ENH) templates.
PBOC Configures the power output levels of the H4TU-R customer unit toward the network to
comply with Default (DEF) or Enhanced (ENH) templates.
Table 5. Front-Panel System Information Messages (Scroll Mode) (a)
(a) To scroll through system information messages, press the MODE button for 3 or more seconds.
Message Description Message Description
VER x.xx Firmware version. CODE xxxx Line code setting (AUTO, AMI,
B8ZS). Default is AUTO.
LIST xx Product list number. LATT xx Loop attenuation threshold
(0 to 50 dB). Default is 38.
FRM xxxx Frame pattern received from the
DSX-1 (SF, ESF, or UNFR).
MARG xx Margin threshold (0 to 15 dB).
Default is 4.
Copies of this publication or the user manual
(LTPH-UM-1122-xx) can be downloaded at www.adc.com. To
order a hard copy, contact your sales representative.
LOOPBACK TESTING
Initiate loopback testing from the maintenance menus or use the MODE and SEL
pushbuttons. Testing can also be initiated by usinga test set to send inband codes (Table 1).
Refer to the user manual, document number LTPH-UM-1122-xx, for more information.
Front Panel
List number
CLEI/ECI bar code label
Craft port provisioning
To access all system maintenance, provisioning and
screens, connect a standard 9-pin terminal cable between the
serial port on a PC and the H4TU-C-388 craft port.
performance
Four-character display
Displays status, provisioning, and alarm messages.
See tables belowfor a list of message descriptions.
DSX-1 bridging jacks
Status LED
A Customer Remote (CREM)
loopback or a Network Local
(NLOC) loopback is in effect.
Green LED Normal operation.
HDSL4 acquisition or
system alarm.
Red LED Fuse alarm.
Flashing Red LED
Yellow LED
FlashingYellow LED System is in Armed (ARM)
mode.
Off Line power is off.
(on PC board)
Configuration number
H
4
T
U
•
3
8
8
C
M
O
D
E
S
E
L
D
S
1
D
S
1
BRG
I
N
I
N
O
U
T
O
U
T
RS-232
DCE
L1
MaintenanceTerminal Modem Settings
9600 baud
8 data bits
No parity
1 stop bit
Hardware flow control:OFF
Terminal emulation software:VT100
Card handle
Lift to release.
Lower to secure H4TU-C.
Card-edge Connector
* Fuse alarm is normally floating (0 to 80V max.) and
at -48V (10 mA max.) when activated.
106
105
104
103
102
101
100
DSX-1OUT
DSX-1IN
205
204
203
202
201
200
119
118
117
116
115
114
113
112
111
110
GND GND
FrameGND
Fusealarm*
Ring1
Tip1
Factoryuseonly
Ring
Tip
Factoryburn-in
-48Vdc
219
218
217
216
215
214
213
212
211
210
209
208
207
206
109
108
107
HDSL4Loop1
RingA
TipA
HDSL4Loop2
RingB
TipB
STAT
MODE and SEL pushbuttons (for manual
setting of system parameters)
Use MODE and SEL to manually modify user options,
oopbacks, and display DSX-1 line parameters. initiate
l
1
2
3
4
Press the MODE pushbutton for 1 second and release.
The front panel alternately displays the first system
parameter and its current setting.
Press SEL to step through all possible settings for
the displayed parameter.
Press MODE to update the parameter and advance
to the next parameter.
After scrolling through all the parameters, press SEL
to confirm changes when prompted with a CONF NO
message, or press MODE to cancel all changes. Provides non-intrusive bridging jack access to (IN) and from
(OUT) the HDSL4 span at the DSX-1 interface. Allows monitoring
of the DS1 payloads.
To initiate a manual loopback:
1
Press both the MODE and SEL pushbuttons for at least
3 seconds.The following message appears:
Press SEL to activate the NLOC loopback or press
MODE to select the next available loopback.
, press both the
MODE and SEL pushbuttons for 3 or more seconds
MAN LPBK NLO?
2
To manually terminate a loopback
(inside handle)
Table 1. GNLB Loopback Commands
Loopback Inband Code Description
NLOC 1111000 DSX-1 signal is looped back to the network at the H4TU-C.
NREM 1110000 DSX-1 signal is looped back to the network at the H4TU-R.
CLOC 1111100 DS1 signal from customer is looped back to the customer at the H4TU-R.
CREM 1111110 DS1 signal from customer is looped back to the customer at the H4TU-C.
NDU1 110000 Signal is looped back to the network at H4D1.
NDU2 111000 Signal is looped back to the network at H4D2.
CDU1 111100 Signal from customer is looped back to the customer at H4D1.
CDU2 111110 Signal from customer is looped back to the customer at H4D2.
SMJK 11000 DSX-1 signal is looped back to the network at the H4TU-R SmartJack module.
Loopdown 11100 Deactivates any of the above loopbacks.
Table 2. 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
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 Loop 1 and Loop 2 of the HDSL4 pairs.
PWR FEED GND (b) The HDSL4 loop is grounded.
PWR FEED OPEN (b) A line-power open condition.
SPNn-LOSW The HDSL4 loop has lost synchronization. The span closest to the network has
highest priority. (n= span number)
LLOS No signal is detected at the DSX-1 input to the H4TU-C.
RLOS No signal is detected at the DS1 input to the H4TU-R.
LAIS Line Alarm Indication Signal.
RAIS Remote Alarm Indication Signal.
LRAI An RAI alarm (yellow) from the Customer Premises Equipment (CPE) with an
error-free signal from the line unit or network. RAI signal is transmitted towards the
network.
RRAI An RAI alarm (yellow) from the CPE with errors from the line unit or network.
xxx-LOF DS1 input does not contain the ESF or SF frame pattern setting of the FRMG option.
(xxx denotes either Transmission Unit Central Office [TUC] or Transmission Unit
Remote End [TUR]).
xxx-DBER A system DS1 Bit Error Rate (DBER) alarm (xxx denotes either TUC or TUR).
PRMF H4TU-R Performance Report Messaging BER threshold exceeded at far end.
PRMN H4TU-R Performance Report Messaging BER threshold exceeded at near end.
xxxx-HBRx(c)
(c) The xxxx prefix denotes TUC, TUR, or a first or second doubler interface, upstream or downstream (DUxU
or DUxD, where x= Doubler 1 or 2). The single xsuffix denotes Loop 1 or Loop 2.
A system HDSL4 Block Error Rate (HBER) alarm.
xxxx-MALx(c) The margin on the HDSL4 loop has dropped below the threshold setting.
xxxx-LAx(c) The attenuation on the HDSL4 loop has exceeded the maximum threshold value.
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 H4TU-C-388 List 1 DSX-1 output ports to the
cross-connect panel must be grounded at both ends.
Network Customer
Premises
NLOC NDU1 NDU2 CLOC
CDU1 CDU2CREM NREM
TLOS*
H4TU-C H4D1 H4D2 H4TU-R
SMJK
DS1
DSX-1
*
When enabled,TLOS is an automatic loopback
that occurs with an LOS at the remote DS1 input.
Span 1 Span 2 Span 3
Downstream Upstream
Table 3. Front Panel Diagnostic Messages
Message (a)
(a) Normal operating messages are in bold.
Description
A=xx The Attenuation (A) message appears followed by xx, where xx is the highest loop
attenuation of all HDSL interfaces.
ACQ1 or ACQ2 The multiplexers of the H4TU-C and H4TU-R are trying to establish synchronization over
HDSL4 Loop 1 or Loop 2.
ARM Armed to respond to Intelligent Repeater Loop (ILR) codes.
BAD RT? The H4TU-C has not received a response from the H4TU-R.
FERR A framing bit error has occurred at H4TU-C DSX-1 input.
HxES H4TU-C HDSL4 Loop 1 or Loop 2 Cyclical Redundancy Check (CRC) error. (Loop 1 has
display priority over Loop 2.)
LBPV A local bipolar violation has been received at the DSX-1 input to the H4TU-C.
1=xx or
2=xx
Power of the received HDSL4 signal on each loop relative to noise (S/N with respect to
21.5 dB). (xx denotes lowest margin in dB for Loop 1 and Loop 2.)
PWR FEED OFF HDSL4 span power is off.
PWR FEED ON HDSL4 loop is not grounded or shorted.
SIG1 or SIG2 H4TU-C and H4TU-R transceivers are trying to establish contact with each other over
HDSL4 Loop 1 or Loop 2.
Table 4. Front-Panel Configuration Options Using MODE and SEL(a)
(a) Front-panel configuration options display in the order listed.
Message (b)
(b) Normal operating messages are in bold.
Description
EQL Sets the DSX-1 equalizer to: 0 (0 to 133 ft.), 133 (133 to 266 ft.), 266 (266 to 399 ft.),
399 (399 to 533 ft.), 533 (533 to 655 ft.).
RLBO Sets the H4TU-R line buildout to 0 dB, -7.5 dB, or -15 dB.
LPBK Enables (ENA) or disables (DIS) SmartJack loopback commands.
PWRF OFF = disables line power; AUTO = -185 Vdc or ±123 Vdc (depending on number of
downstream units detected); LOW = -185 Vdc; and HIGH = ±123 Vdc.
HBER 1E-6 or 1E-7 = alarm activates when the HDSL4 BER alarm threshold exceeds 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 min, 60 min, 120 min, 8 hr, and 24 hr.
DS1 DSX-1 line code = AUTO, B8ZS, or AMI.
FRMG DS1 frame formatting mode = AUTO (automatic framing), SF (SuperFrame), ESF (Extended
SuperFrame), or UNFR (unframed).
RDA Enables (ENA) or disables (DIS) alarm indications due to remote DS1 LOS at the H4TU-R
input.
ALMP Enables system to output an alarm pattern: AIS or LOS.
BPVT Enables (ENA) or disables (DIS) Bipolar Violation Transparency.
NLBP Enables the H4TU-R to transmit either AIS or LOS towards the CI for any network loopback.
TLOS Enables (ENA) or disables (DIS) a logic loopback at the H4TU-R when an LOS occurs at its
DS1 input.
RTPV Enables (ENA) or disables (DIS) remote provisioning.
PBON Configures the power output levels of the H4TU-C network unit toward the customer to
comply with Default (DEF) or Enhanced (ENH) templates.
PBOC Configures the power output levels of the H4TU-R customer unit toward the network to
comply with Default (DEF) or Enhanced (ENH) templates.
Table 5. Front-Panel System Information Messages (Scroll Mode) (a)
(a) To scroll through system information messages, press the MODE button for 3 or more seconds.
Message Description Message Description
VER x.xx Firmware version. CODE xxxx Line code setting (AUTO, AMI,
B8ZS). Default is AUTO.
LIST xx Product list number. LATT xx Loop attenuation threshold
(0 to 50 dB). Default is 38.
FRM xxxx Frame pattern received from the
DSX-1 (SF, ESF, or UNFR).
MARG xx Margin threshold (0 to 15 dB).
Default is 4.
Copies of this publication or the user manual
(LTPH-UM-1122-xx) can be downloaded at www.adc.com. To
order a hard copy, contact your sales representative.
LOOPBACK TESTING
Initiate loopback testing from the maintenance menus or use the MODE and SEL
pushbuttons. Testing can also be initiated by usinga test set to send inband codes (Table 1).
Refer to the user manual, document number LTPH-UM-1122-xx, for more information.
Front Panel
List number
CLEI/ECI bar code label
Craft port provisioning
To access all system maintenance, provisioning and
screens, connect a standard 9-pin terminal cable between the
serial port on a PC and the H4TU-C-388 craft port.
performance
Four-character display
Displays status, provisioning, and alarm messages.
See tables belowfor a list of message descriptions.
DSX-1 bridging jacks
Status LED
A Customer Remote (CREM)
loopback or a Network Local
(NLOC) loopback is in effect.
Green LED Normal operation.
HDSL4 acquisition or
system alarm.
Red LED Fuse alarm.
Flashing Red LED
Yellow LED
FlashingYellow LED System is in Armed (ARM)
mode.
Off Line power is off.
(on PC board)
Configuration number
H
4
T
U
•
3
8
8
C
M
O
D
E
S
E
L
D
S
1
D
S
1
BRG
I
N
I
N
O
U
T
O
U
T
RS-232
DCE
L1
MaintenanceTerminal Modem Settings
9600 baud
8 data bits
No parity
1 stop bit
Hardware flow control:OFF
Terminal emulation software:VT100
Card handle
Lift to release.
Lower to secure H4TU-C.
Card-edge Connector
* Fuse alarm is normally floating (0 to 80V max.) and
at -48V (10 mA max.) when activated.
106
105
104
103
102
101
100
DSX-1OUT
DSX-1IN
205
204
203
202
201
200
119
118
117
116
115
114
113
112
111
110
GND GND
FrameGND
Fusealarm*
Ring1
Tip1
Factoryuseonly
Ring
Tip
Factoryburn-in
-48Vdc
219
218
217
216
215
214
213
212
211
210
209
208
207
206
109
108
107
HDSL4Loop1
RingA
TipA
HDSL4Loop2
RingB
TipB
STAT
MODE and SEL pushbuttons (for manual
setting of system parameters)
Use MODE and SEL to manually modify user options,
oopbacks, and display DSX-1 line parameters. initiate
l
1
2
3
4
Press the MODE pushbutton for 1 second and release.
The front panel alternately displays the first system
parameter and its current setting.
Press SEL to step through all possible settings for
the displayed parameter.
Press MODE to update the parameter and advance
to the next parameter.
After scrolling through all the parameters, press SEL
to confirm changes when prompted with a CONF NO
message, or press MODE to cancel all changes. Provides non-intrusive bridging jack access to (IN) and from
(OUT) the HDSL4 span at the DSX-1 interface. Allows monitoring
of the DS1 payloads.
To initiate a manual loopback:
1
Press both the MODE and SEL pushbuttons for at least
3 seconds.The following message appears:
Press SEL to activate the NLOC loopback or press
MODE to select the next available loopback.
, press both the
MODE and SEL pushbuttons for 3 or more seconds
MAN LPBK NLO?
2
To manually terminate a loopback
(inside handle)
Table 1. GNLB Loopback Commands
Loopback Inband Code Description
NLOC 1111000 DSX-1 signal is looped back to the network at the H4TU-C.
NREM 1110000 DSX-1 signal is looped back to the network at the H4TU-R.
CLOC 1111100 DS1 signal from customer is looped back to the customer at the H4TU-R.
CREM 1111110 DS1 signal from customer is looped back to the customer at the H4TU-C.
NDU1 110000 Signal is looped back to the network at H4D1.
NDU2 111000 Signal is looped back to the network at H4D2.
CDU1 111100 Signal from customer is looped back to the customer at H4D1.
CDU2 111110 Signal from customer is looped back to the customer at H4D2.
SMJK 11000 DSX-1 signal is looped back to the network at the H4TU-R SmartJack module.
Loopdown 11100 Deactivates any of the above loopbacks.
Table 2. 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
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 Loop 1 and Loop 2 of the HDSL4 pairs.
PWR FEED GND (b) The HDSL4 loop is grounded.
PWR FEED OPEN (b) A line-power open condition.
SPNn-LOSW The HDSL4 loop has lost synchronization. The span closest to the network has
highest priority. (n= span number)
LLOS No signal is detected at the DSX-1 input to the H4TU-C.
RLOS No signal is detected at the DS1 input to the H4TU-R.
LAIS Line Alarm Indication Signal.
RAIS Remote Alarm Indication Signal.
LRAI An RAI alarm (yellow) from the Customer Premises Equipment (CPE) with an
error-free signal from the line unit or network. RAI signal is transmitted towards the
network.
RRAI An RAI alarm (yellow) from the CPE with errors from the line unit or network.
xxx-LOF DS1 input does not contain the ESF or SF frame pattern setting of the FRMG option.
(xxx denotes either Transmission Unit Central Office [TUC] or Transmission Unit
Remote End [TUR]).
xxx-DBER A system DS1 Bit Error Rate (DBER) alarm (xxx denotes either TUC or TUR).
PRMF H4TU-R Performance Report Messaging BER threshold exceeded at far end.
PRMN H4TU-R Performance Report Messaging BER threshold exceeded at near end.
xxxx-HBRx(c)
(c) The xxxx prefix denotes TUC, TUR, or a first or second doubler interface, upstream or downstream (DUxU
or DUxD, where x= Doubler 1 or 2). The single xsuffix denotes Loop 1 or Loop 2.
A system HDSL4 Block Error Rate (HBER) alarm.
xxxx-MALx(c) The margin on the HDSL4 loop has dropped below the threshold setting.
xxxx-LAx(c) The attenuation on the HDSL4 loop has exceeded the maximum threshold value.
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 H4TU-C-388 List 1 DSX-1 output ports to the
cross-connect panel must be grounded at both ends.
Network Customer
Premises
NLOC NDU1 NDU2 CLOC
CDU1 CDU2CREM NREM
TLOS*
H4TU-C H4D1 H4D2 H4TU-R
SMJK
DS1
DSX-1
*
When enabled,TLOS is an automatic loopback
that occurs with an LOS at the remote DS1 input.
Span 1 Span 2 Span 3
Downstream Upstream
Table 3. Front Panel Diagnostic Messages
Message (a)
(a) Normal operating messages are in bold.
Description
A=xx The Attenuation (A) message appears followed by xx, where xx is the highest loop
attenuation of all HDSL interfaces.
ACQ1 or ACQ2 The multiplexers of the H4TU-C and H4TU-R are trying to establish synchronization over
HDSL4 Loop 1 or Loop 2.
ARM Armed to respond to Intelligent Repeater Loop (ILR) codes.
BAD RT? The H4TU-C has not received a response from the H4TU-R.
FERR A framing bit error has occurred at H4TU-C DSX-1 input.
HxES H4TU-C HDSL4 Loop 1 or Loop 2 Cyclical Redundancy Check (CRC) error. (Loop 1 has
display priority over Loop 2.)
LBPV A local bipolar violation has been received at the DSX-1 input to the H4TU-C.
1=xx or
2=xx
Power of the received HDSL4 signal on each loop relative to noise (S/N with respect to
21.5 dB). (xx denotes lowest margin in dB for Loop 1 and Loop 2.)
PWR FEED OFF HDSL4 span power is off.
PWR FEED ON HDSL4 loop is not grounded or shorted.
SIG1 or SIG2 H4TU-C and H4TU-R transceivers are trying to establish contact with each other over
HDSL4 Loop 1 or Loop 2.
Table 4. Front-Panel Configuration Options Using MODE and SEL(a)
(a) Front-panel configuration options display in the order listed.
Message (b)
(b) Normal operating messages are in bold.
Description
EQL Sets the DSX-1 equalizer to: 0 (0 to 133 ft.), 133 (133 to 266 ft.), 266 (266 to 399 ft.),
399 (399 to 533 ft.), 533 (533 to 655 ft.).
RLBO Sets the H4TU-R line buildout to 0 dB, -7.5 dB, or -15 dB.
LPBK Enables (ENA) or disables (DIS) SmartJack loopback commands.
PWRF OFF = disables line power; AUTO = -185 Vdc or ±123 Vdc (depending on number of
downstream units detected); LOW = -185 Vdc; and HIGH = ±123 Vdc.
HBER 1E-6 or 1E-7 = alarm activates when the HDSL4 BER alarm threshold exceeds 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 min, 60 min, 120 min, 8 hr, and 24 hr.
DS1 DSX-1 line code = AUTO, B8ZS, or AMI.
FRMG DS1 frame formatting mode = AUTO (automatic framing), SF (SuperFrame), ESF (Extended
SuperFrame), or UNFR (unframed).
RDA Enables (ENA) or disables (DIS) alarm indications due to remote DS1 LOS at the H4TU-R
input.
ALMP Enables system to output an alarm pattern: AIS or LOS.
BPVT Enables (ENA) or disables (DIS) Bipolar Violation Transparency.
NLBP Enables the H4TU-R to transmit either AIS or LOS towards the CI for any network loopback.
TLOS Enables (ENA) or disables (DIS) a logic loopback at the H4TU-R when an LOS occurs at its
DS1 input.
RTPV Enables (ENA) or disables (DIS) remote provisioning.
PBON Configures the power output levels of the H4TU-C network unit toward the customer to
comply with Default (DEF) or Enhanced (ENH) templates.
PBOC Configures the power output levels of the H4TU-R customer unit toward the network to
comply with Default (DEF) or Enhanced (ENH) templates.
Table 5. Front-Panel System Information Messages (Scroll Mode) (a)
(a) To scroll through system information messages, press the MODE button for 3 or more seconds.
Message Description Message Description
VER x.xx Firmware version. CODE xxxx Line code setting (AUTO, AMI,
B8ZS). Default is AUTO.
LIST xx Product list number. LATT xx Loop attenuation threshold
(0 to 50 dB). Default is 38.
FRM xxxx Frame pattern received from the
DSX-1 (SF, ESF, or UNFR).
MARG xx Margin threshold (0 to 15 dB).
Default is 4.
Copies of this publication or the user manual
(LTPH-UM-1122-xx) can be downloaded at www.adc.com. To
order a hard copy, contact your sales representative.
DNV C ertificatio n, Inc.
REGISTERED FIRM
ISO 9001/TL 9000
HDSL4
HDSL4
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-60950/CSA-C22.2 No. 60950-00: Safety of Information Technology
Equipment
Trademark Information
ADC is a registered trademark of ADC Telecommunications, 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
© 2003 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.
World Headquarters
ADC Telecommunications, Inc.
PO Box 1101
Minneapolis, MN 55440-1101
Technical Assistance
Tel: 800.366.3891
H4TU-C-388 LIST 1
The H4TU-C-388 List 1 line unit is the Central Office (CO) side of a T1 transmission
system. The H4TU-C, when used with an H4TU-R remote unit, transmits a
1.544 Mbps payload a maximum distance of 12 kft. over two unconditioned copper
pairs. Using two doublers (H4Ds), the Carrier Service Area (CSA) reach can be
extended to a maximum of 34 kft. (See Specifications below.)
The H4TU-C-388 List 1 is designed to mount in Double Dual Module Plus (DDM+)
high-density shelves.
FEATURES
SPECIFICATIONS
Front-panel features: status LED, craft port,
MODE and SEL pushbuttons for setting system
parameters and activating loopback commands
(including dual loopbacks), DSX-1 test jacks, and
a four-character status display
HDSL4 transmission features:
•Doubler (HD4) support for up to three spans
•Grounded loop detection on HDSL4 spans
•Bit Error Rate Tester (BERT)
•Spectrum compatibility with ADSL services
Maintenance screens for inventory,
provisioning, performance monitoring, and
troubleshooting, including:
•Remote provisioning
•Loop attenuation and insertion loss reporting
•Power Back Off (PBON and PBOC) for
configuring HDSL4 transmit power levels to
reduce crosstalk
•Report menu option for downloading status
and performance data
Sources sealing current when connected to any
locally powered H4TU-R-402
Operating Temperature -40°F to +149°F (-40°C to +65°C)
Operating Humidity 5% to 95% non-condensing
CSA Reach 34 kft. maximum using 26 AWG: 12 kft. (Span 1), 11 kft. each (Spans 2 and 3)
CO Supply -48 Vdc nominal (-42.5 to -56.5 Vdc)
HDSL4 Span Voltage 0, -185 Vdc, +123 Vdc (voltage is applied across Loop 1 and Loop 2)
Mounting Double Dual Module Plus (DDM+) high-density
HDSL4 Line Rate 784 kbps Overlapped Pulse Amplitude Modulation (OPAM) transmission per pair
HDSL4 Output +14.1 dBm ±0.5 dB, 135Ω
Maximum Insertion
Loss
Span 1 = 47 dB at 196 kHz
Span 2 and Span 3 = 43 dB at 196 kHz
Maximum Loop
attenuation
Span 1 = 31 dB
Span 2 and Span 3 = 29 dB
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 6Vpk-pk, pre-equalized for 0 to 655 feet of ABAM cable
INSTALLATION
Align the H4TU-C with the shelf card-slot guides and slide the unit in. Press down on
the front panel to snap the H4TU-C into place.
POWER-UP SEQUENCE
When the H4TU-C powers up, the four-character display illuminates and displays
status messages.
If the H4TU-C is unable to communicate with the next span device, it displays
appropriate alarm and status messages.
If the H4TU-C is able to communicate with the next span device, the following events
occur:
•The Status LED flashes red while the H4TU-C acquires each device in the
system, and then turns steady green when the entire system is operating with no
alarms (the DS1 signal must be present).
•The front panel display reports signal-to-noise ratio (SNR) margin readings
(should be ≥6 dB) and loop attenuation (should be ≤34 dB).
•The front panel display reports any alarm conditions that exist after the system
powers up (the H4TU-C reports alarms if no DS1 signal is applied).
PROVISIONING
Perform these basic provisioning tasks:
1Connect a maintenance terminal to the craft port (see front-panel illustration
inside) and log on. Press + to refresh the logon screen, if necessary.
Refer to the onscreen Help menu for navigational aids or use the (to
cycle through selections), (to activate the current setting, choice, or to
display a menu), or (to return to the parent menu), or directional
arrow keys (to navigate to a menu or item)
2Select the Config menu, Date and Time, then type the date and time.
3Select the Inventory screen, then type in the unit ID numbers.
4Change system parameter settings, if necessary, by selecting the Config menu,
then Standard Options or ADC Options. (Configuration options can also be set
from the front panel using the MODE and SEL buttons. See the Table 4 inside.)
5Once the H4TU-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
SPACEBAR
ENTER
ESC F11
Ä
Product Catalog: H4TU-C-388-L1
CLEI: VACJSKPE
Document: LTPH-QI-1123-03
´,j7¶79¨
1274237
September 12, 2003
QUICK INSTALLATION
H4TU-C-388 LIST 1
LINE UNIT
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