H2TU-C - Adtran

Total Access ® 3000
H2TU-C
P/N 1181113L2
CLEI: T1I3ADFA_ _
*61181113L2-22D*
TX
E
Q
RX
TX
M
ON
RX
1181113L2
DSL
DSX/DS1
ALM
ESF/ SF
(YEL) (GRN)
B8ZS/AMI
(YEL) (GRN)
LBK
C A U T I O N !
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
©2012 ADTRAN, Inc.
All Rights Reserved.
FRONT PANEL LEDS
Label Indications Description
DSL �
�
DSX/
DS1
�
�
ALM �
�
�
ESF/SF �
�
�
B8ZS/
AMI
�
�
LBK �
�
Green
Red
Green
Red
Off
Red
Yellow
Off
Green
Yellow
Green
Yellow
Off
Yellow
Total Access 3000
H2TU-C Transceiver for Central Office
DSL sync, no errors currently detected, and signal margin > 2 dB
No DSL sync, errors being detected, or signal margin ≤ 2 dB
DSX-1 signal is present and no errors currently being detected
No DSX-1 signal or signal is present with errors
No active alarm present
Loss of DSX-1 signal to the unit
Loss of DS1 signal to the remote
Unit is provisioned for UNFRAMED data
Unit is provisioned for SF data
Unit is provisioned for ESF data
Unit is provisioned for AMI line code
Unit is provisioned for B8ZS line code
Unit is NOT in loopback
Unit is in loopback (network and/or customer)
FEATURES
Auto In-Service
This Total Access 3000 H2TU-C supports the Auto In-Service feature that will automatically
change the service state of the module from Out-Of-Service Maintenance to In-Service and vice
versa based on DSL loop sync and/or DSX-1/DS1 alarm presence.
Bit Error Rate Testing (BERT)
The ADTRAN Total Access HDSL2 unit has the capability to initiate and record BERT via the
Craft Access Terminal menus. It features eight user-selectable data patterns as well as the ability
to insert errors.
Bad Splice Detection
This unit can detect anomalies in cable splices and provide an approximation of distance, in
feet, to the suspect splice. Details are provided via the Troubleshooting screens available
through the Total Access 3000 SCU.
Fault Bridging
This feature minimizes downtime when an intermittent impairment (GFI, lightning, short,
micro-interruption, bad splice, noise burst, etc.) briefly affects the HDSL loop by sustaining the
circuit during the impairment until good signal returns, thereby preventing a retrain and maintaining
communication.
Fast Retrain
Fast Retrain is an ADTRAN proprietary feature that minimizes downtime due to an intermittent
impairment (bad splice, noise burst, etc.) which due to its duration cannot be bridged.
When such impairments occur after HDSL synchronization has been achieved, the fast retrain
feature will be invoked to restore service within 5 to 7 seconds. This short retrain time allows
for reduced downtime compared to the traditional 25 to 30 second retrain duration.
NOTE: Fast-Retrain capable units must be installed on both ends of the HDSL2 circuit for this feature
to function properly. Also, if there is a failure, for any reason, of a fast retrain attempt then the
traditional (25-30 second) retrain will be initiated.
ACCESSING THE H2TU-C SOFTWARE
Provision the Total Access 3000 H2TU-C through the Total Access 3000 System Controller
Unit (SCU), P/N 1181018L1. These options are accessed through a local terminal or remote
access via the 10Base-T or TL1 interfaces. Connect a terminal emulator via the RS-232 (DB-9)
connector on the front panel of the SCU. The terminal must be VT100 or compatible and set for
9600 bps, 8 data bits, no parity, and 1 stop bit. At the LOGIN screen, enter the account name
“ADMIN” and password “PASSWORD.” The password can be changed upon initial login.
Select Access Modules from the Total Access Menu. Access the desired H2TU-C by selecting
the corresponding slot number.
NOTE:Upon connecting, it may be necessary to press CTRL+R for the screen to display
properly.
PROVISIONING OPTIONS
Used to provision the Total Access 3000 H2TU-C
Provisioning Option Option Settings Default Settings
1. DSX-1 Line Build Out 0–133 feet; 133–266 feet; 266–399 feet; 0–133 feet
399–533 feet; 533–655 feet
2. DSX-1/DS1 Line Code B8ZS, AMI B8ZS
3. DSX-1/DS1 Framing SF, ESF, Unframed, Auto ESF
4. Force Frame Conversion Disabled, Enabled Disabled
5. Smartjack Loopback Disabled, Enabled Enabled
6. Loopback Time Out None, 120 Min. 120 Minutes
7. Latching Loopback Mode T1 (Disabled), FT1 (Enabled) T1 (Disabled)
8. DS1 Tx Level 0 dB, –7.5 dB, –15 dB 0 dB
9. Span Power Enabled, Disabled Enabled
10. Customer Loss Indicator AIS, Loopback, AIS/CI AIS/CI
11. PRM Setting None, SPRM, NPRM, AUTO AUTO
12. Loop Atten Alarm Thres 0 (Disabled), 1-99 dB 30 dB
13. SNR Margin Alarm Thres 0 (Disabled), 1-15 dB 04 dB
14. Remote Provisioning Disabled, Enabled Enabled
15. Service State In-Service;
Out-of-Service
Out-of-Service Unassigned;
Out-of-Service Maintenance
Maintenance
16. Network Source DSX, MUX A, MUX B, Auto MUX DSX
17. External Alarms Enabled, Disabled Disabled
18. Auto In Service Disabled, Enabled Enabled
19. Auto IS Startup Period 1 hour, 4 hours, 8 hours, 24 hours 4 hours
20. Auto IS Off Period 1 hour, 4 hours, 8 hours, 24 hours 8 hours
COMPLIANCE
WARNING: Up to –200 VDC may be present on telecommunications wiring. The DSX-1
interface is intended for connection to intra-building wiring only. Ensure
chassis ground is properly connected.
This product provides span powering voltage (negative only with respect to ground, –190 VDC
nominal, GFI protection < 5 mA) and meets all requirements of Bellcore GR-1089-CORE
(Class A2), ANSI T1.418-2002. This product is NRTL listed to the applicable UL standards.
For more information, refer to the Installation and Maintenance Practice (P/N 61223HDSL2L2-5) available online at www.adtran.com.
Issue Date: February 2012
Document P/N: 61181113L2-22D

Code Input Output
Power Code F C
Telecommunication Code (TC) – X
Installation Code (IC) A –
FRONT PANEL BANTAM JACK TEST ACCESS
Bantam jacks provide intrusive and non-intrusive access into the data stream.
EQ = intrusive
Equipment Jack = To Customer
♦ TX Replaces the data stream being transmitted to the customer (HDSL Loop)
♦ RX Accesses the data stream being received from the customer (HDSL Loop)
Equipment Jack = To Network
♦ TX Replaces the data being transmitted to the Central Office
♦ RX Accesses the data being received from the Central Office
MON = non-intrusive
♦ TX Monitors signal being transmitted to the customer (HDSL Loop)
♦ RX Monitors signal being received from the customer (HDSL Loop)
Testing via the Bantam Jacks
The BERT tester should be in Monitor mode for nonintrusive tests and Terminate mode for intrusive tests. Use the
Provisioning Screen to configure the H2TU-C for the DSX- or MUX-fed network source. Use the Loopback and
Test Screen to configure the EQ jacks for the customer or network direction. (The Network direction is only available
when the H2TU-C is MUX-fed.) The BERT TX is only used in intrusive tests.
Test Step Purpose
Nonintrusive DSX to
Customer
Nonintrusive DSX from
Customer
Connect H2TU-C TX MON to BERT
RX.
Connect H2TU-C RX MON to BERT
RX.
Intrusive DSX Customer Connect H2TU-C TX EQ to BERT
TX and H2TU-C RX EQ to BERT
RX.
Nonintrusive MUX to
Customer
Nonintrusive MUX from
Customer
Connect H2TU-C TX MON to BERT
RX.
Connect H2TU-C RX MON to BERT
RX.
Intrusive MUX Network 1. From the Active Circuit Test
Menu, verify Equipment Jack is
set to Network.
2. Connect H2TU-C TX EQ to
BERT TX and H2TU-C RX EQ to
BERT RX.
Intrusive MUX Customer 1. Verify Equipment Jack is set to
Customer.
2. H2TU-C TX EQ to BERT TX and
H2TU-C RX EQ to BERT RX.
Total Access 3000
H2TU-C Transceiver for Central Office
Allows access to DSX signal going to the
customer
Allows access to DSX signal coming from the
customer
Allows direct access to signal going to and from
the customer
Allows access to signal going to the customer
(Total Access MUX)
Allows access to signal coming from the
customer
Allows direct access to signal going to and from
the network (Total Access 3000 MUX)
Allows direct access to signal going to and from
the customer
Warranty: ADTRAN will replace or repair this product within the warranty period if it does not meet its published specifications or fails while in service.
Warranty information can be found online at www.adtran.com/warranty.
PRICING AND AVAILABILITY 800.827.0807
TECH SUPPORT 800.726.8663
RETURN FOR REPAIR 256.963.8722
www.adtran.com
61181113L2-22D
TROUBLESHOOTING HDSL2
This ADTRAN HDSL2 unit is equipped with troubleshooting-at-a-glance LEDs (identified on the reverse side of
this document) that provide customers with a simple means of identifying the location of certain faults.
Additionally, several new screens have been added to the craft interface to simplify the trouble isolation process.
These new screens and their associated benefits are described below.
Troubleshooting Screen
Available via the HDSL2 Main Menu: Provides ADTRAN contact information and access to the Troubleshooting
Guidance and General Information screens.
Troubleshooting Guidance Screens
Available via the Troubleshooting screen: Detects and displays errors and/or alarms at any of the monitored inputs
(DSX1, DS1 and HDSL).
LOOPBACK AND CONTROL CODES
Function Source Code Code and Response
Arm (N) 11000
(2-in-5 pattern)
Disarm (N/C) 11100
(3-in-5 pattern)
H2TU-C
Network
Loopback
HTU-R
Loopback
(N) D3D3
(1101 0011 1101 0011)
(N) C742
(1100 0111 0100 0010)
Loop down (N) 9393
(1001 0011 1001 0011)
Loopback
Time Out
Override
Span Power
Disable
(N) D5D6
(1101 0101 1101 0110)
(N) 6767
(0110 0111 0110 0111)
HDSL2 LOOP SPECIFICATIONS FOR OPTIMUM OPERATION
If the pattern is sent from the network, the units arm, and the H2TU-
R loops back if Smartjack Loopback is enabled.
The H2TU-C is removed from the armed state. All units in loopback
when 11100 pattern is received loop down.
If the units have been armed but not in loopback 1 , the H2TU-C
loops back toward the network, 2 seconds of AIS (all ones) are sent,
5 seconds of data pass, and 231 bit errors are injected into the
DSX-1 signal.This repeats every 20 seconds while the pattern is
sent. When the pattern is removed, the unit remains in loopback. If
the pattern is reinstated, injections resume.
When set from the network, an HTU-R network loopback is activated
and a 20-bit error confirmation is sent every 10 seconds.
When sent from the network, all units currently in loopback loop
down. Armed units do not disarm. To function like a smartjack, the
H2TU-R will does loop down from a network loopback in response
to the 9393 pattern if Smartjack Loopback is enabled.
If the units are armed and this pattern is sent, the loopback time out
is disabled. The time out option is updated on the Provisioning
menu of the H2TU-R to “None” (viewable through the RS-232
port). As long as the units remain armed, the time out remains disabled.
When the units are disarmed, the loopback time out returns to
the value it had before the D5D6 code was sent. As long as the pattern
continues to be sent, errors are injected again every 20 seconds
as follows: H2TU-C = 231 errors; H2TU-R = 20 errors
If the units are armed and this pattern is sent, the H2TU-C deactivates
its span power supply, turning off the H2TU-R. As long as the
pattern continues to be sent, the span power supply remains disabled.
When the pattern is no longer being sent, the H2TU-C reactivates
its span power supply, turning the remote unit(s) on, and all
units retrain and return to the disarmed and unlooped state.
1 If Smartjack Loopback is enabled, then the H2TU-R can be in network loopback when the H2TU-C loopback codes are sent.
• Cable pairs must be non-loaded • Maximum loop resistance is 750 Ω
• No single Bridged Tap > 2 kft; Total
Bridged Tap < 2.5 kft
• Attenuation (LOSS on HDSL Current
System Status screen) ≤ 30 dB
• 196 KHz loss ≤ 35 dB • Impulse Noise ≤ 38 dBrnF (as measured
using an F filter) at 35 dB loss