ADTRAN E1 HDSL Instruction Manual

61246043L3-5A Section 61246043L3-5, Issue 1 1
Section 61246043L3-5A
Issue 1, January 2001
CONTENTS
1. GENERAL ..................................................................1
2. INSTALLATION........................................................2
3. FACEPLATE FEATURES.........................................2
4. MAINTENANCE .......................................................2
5. DEPLOYMENT GUIDELINES.................................2
6. SPECIFICATIONS .....................................................2
7. WARRANTY AND CUSTOMER SERVICE ...........5
FIGURES
Figure 1. ADTRAN E1 HDSL Encapsulated REG ........1
TABLES
Table 1. LED Indications ................................................3
Table 2. HDSL Encapsulated REG Unit
Specifications ...................................................4
E1 HDSL Encapsulated REG
HDSL Regenerator
Installation and Maintenance
Figure 1. ADTRAN E1 HDSL Encapsulated REG
One REG can be used in conjunction with any span
powering E1 HDSL transceiver unit for the
exchange office LTU) and E1 HDSL transceiver
unit for the remote end NTU). Compatible
ADTRAN HDSL transceiver units are as follows:
• P/N 1245011LX, E1 HDSL LTU
• P/N 1245031L1, E1 HDSL NTU Circuit Pack
• P/N 1245032L1, E1 HDSL NTU Standalone
• P/N 1181102LX, E1 Total Access LTU
• P/N 1245035L1, E1 HDSL NTU Circuit Pack
There are no manual option settings on the REG.
REG operating power is derived from an LTU,
independent of line impedance or wire diameter.
The operating power from the LTU is also used to
span power the NTU.
The REG operates at line losses up to 27 dB at
150 kHz, in both directions from the extender and
regenerates the 2B1Q signals to meet the
transmitted power spectrum of ETSI TS 101 135.
The REG does not require a secondary
environmental apparatus case. Because it is
encapsulated in a polyurethane compound, this
device is waterproof and can be mounted on a pole,
in a pedestal, in a manhole, or other suitable
location.
1. GENERAL
This practice is an installation and maintenance
practice for the ADTRAN E1 HDSL Encapsulated
Regenerator REG). Figure 1 is an illustration of
the REG. REG equipment features include:
• Up to 4.75 km over 0.5 mm wire in each
direction
• Span powered from LTU
• 2B1Q line coding
• Lightning protection
• Waterproof encapsulated case
• Enhanced provisioning, performance
monitoring, and diagnostics
• CISPR22 Class A
• CE Mark
The ADTRAN E1 HDSL Encapsulated REG is used
to extend the effective range of an ADTRAN
HDSL-based E1 circuit. It is capable of doubling
the deployment range of standard HDSL, full-range
loops on both sides of the REG extending the digital
subscriber loop serving range up to 9.5 km of
0.5 mm twisted pair wire, using a centrally located
unit.
Trademarks: Any brand names and product names included in this document are
trademarks, registered trademarks, or trade names of their respective holders.
REG ENCAPSULATED
HDSL E1 REGENERATOR
1246043L3
GREEN / WHITE
ORANGE / WHITE
BLUE / RED
BLUE / WHITE
BROWN / WHITE
SLATE / WHITE
HDSL LOOP 1 - EXCHANGE
HDSL LOOP 2 - EXCHANGE
HDSL LOOP 1 - CUSTOMER
HDSL LOOP 2 - CUSTOMER
NO CONNECTIONS
LOOP 1
LOOP 2
LOOP 1
LOOP 2
REG-R
REG-C
POWER
LPBK
GREEN=OFF
AMBER=ON

2 Section 61246043L3-5, Issue 1 61246043L3-5A
C A U T I O N
C A U T I O N
!
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
3. FACEPLATE FEATURES
The ADTRAN REG faceplate has four tricolored
LEDs, a power LED, and a test LED indicating
different states of the HDSL circuit. Table 1
explains the meaning of the different LED
indications.
The REG-R LEDs indicate the status of the HDSL
transceivers that are connected to the LTU. The
REG-C LEDs indicate the status of the HDSL
transceivers that are conencted to the NTU.
4. MAINTENANCE
The ADTRAN E1 HDSL REG requires no routine
maintenance. Performance monitoring, diagnostics,
and loopbacks are available from the craft interface
at the LTU and NTU.
When testing indicates a faulty Encapsulated REG,
replace it.
ADTRAN does not recommend field repair of the
Encapsulated REG. Repair services may be
obtained by returning the defective unit to the
ADTRAN Repair Department.
5. DEPLOYMENT GUIDELINES
The ADTRAN HDSL system is designed to provide
E1 services over loops designed to comply with
ETSI guidelines. Deployment guidelines are given
below.
1. All loops are non-loaded only.
2. For loops with 0.5 mm cable, the maximum
loop length including bridged tap lengths is
4.75 km per loop.
3. Any single bridged tap is limited to 500 m.
4. Maximum number of bridge taps per loop is 2.
NOTE
These approximations are to be used as
guidelines only and may vary slightly on
different loops. Adhering to the guidelines
should produce performance in excess of 10-7
BER.
6. SPECIFICATIONS
Table 2 lists the REG specifications.
Revision History
This is the initial release of this document. Future
revisions to this document will be explained in this
subsection.
2. INSTALLATION
The REG can be mounted using bolts, tie wraps, or
other suitable anchoring means.
Remove the E1 HDSL REG from the overpack and
visually ensure that damage has not occurred during
shipping or handling. If damage has occurred, file a
claim immediately with your distributor, then
contact ADTRAN customer service.
Select a suitable site or pole along the main cable
where the loop loss does not exceed 27 dB at
150 kHz as measured from the LTU site to the REG
site. The loop loss from the REG site to the NTU
site should also not exceed 27 dB at 150 kHz unless
a bit error rate BER) measurement is performed to
ensure a maximum BER of less than 1 x 10-7.
CAUTION
Be aware of span powering when connecting
the HDSL loops.
HDSL Pair Connections
• Connect the Green/White twisted pair of wires
to the Exchange pair Loop 1.
• Connect the Orange/White twisted pair of wires
to the Exchange pair Loop 2.
• Connect the Blue/Red twisted pair of wires to
the Customer pair Loop 1.
• Connect the Blue/White twisted pair of wires to
the Customer pair Loop 2.
• Connect the 10 AWG ground wire on the
Encapsulated REG to a suitable Earth Ground
connection.
• The Brown/White and Slate/White pairs are
unused.
Compliance
This product complies with EN 300, 386-2 and IEC
950. It is intended to be installed in a Restricted
Access location only.

61246043L3-5A Section 61246043L3-5, Issue 1 3
LED Description and Indications
PWR .................. This LED indicates the unit is receiving sufficient power from the HDSL loops to power the REG.
Off ...................... Insufficient or no power present.
Green ................. Sufficient power for operation.
REG-R LP1 ....... This LED indicates the HDSL signal quality and errors on REG-R loop 1. The REG-R LP1 LED
will flash once when an errored second is detected on REG-R loop 1. If the REG-R LP1 LED flashes
yellow rapidly six times per second), sealing current is present and the REG is attempting to
synchronize with the other HDSL circuit elements.
Off ...................... No synchronization with the LTU.
Green ................. Synchronized with good signal quality on REG-R loop 1 > 2 dB margin above
10-7 BER).
Yellow ................ Synchronized with marginal signal quality on REG-R loop 1 ≤ 2 dB margin
above 10-7 BER).
Red ..................... Synchronized with poor signal quality on REG-R loop 1 ≥ 10-7 BER).
REG-R LP2 ....... This LED indicates the HDSL signal quality and errors on REG-R loop 2. REG-R LP2 LED will
flash once when an errored second is detected on REG-R loop 2.
Off ...................... No synchronization with the LTU.
Green ................. Synchronized with good signal quality on REG-R loop 2 > 2 dB margin above
10-7 BER).
Yellow ................ Synchronized with marginal signal quality on REG-R loop 2 ≤ 2 dB margin
above 10-7 BER).
Red ..................... Synchronized with poor signal quality on REG-R loop 2 ≥ 10-7 BER).
REG-C LP1 ....... This LED indicates HDSL signal quality and errors on REG-C loop 1. It will flash once when an
errored second is detected on REG-C loop 1.
Off ...................... No synchronization with the NTU.
Green ................. Synchronized with good signal quality on REG-C loop 1 > 2 dB margin above
10-7 BER).
Yellow ................ Synchronized with marginal signal quality on REG-C loop 1 ≤ 2 dB margin
above 10-7 BER).
Red ..................... Synchronized with poor signal quality on REG-C loop 1 ≥ 10-7 BER).
REG-C LP2 ....... This LED indicates HDSL signal quality and errors on REG-C loop 2. It will flash once when an
errored second is detected on REG-C loop 2.
Off ...................... No synchronization with the NTU.
Green ................. Synchronized with good signal quality on REG-C loop 2 > 2 dB margin above
10-7 BER).
Yellow ................ Synchronized with marginal signal quality on REG-C loop 2 ≤ 2 dB margin
above 10-7 BER).
Red ..................... Synchronized with poor signal quality on REG-C loop 2 ≥ 10-7 BER).
LPBK LED ........ This LED indicates the loopback status of the REG.
Green ................. No loopback in progress.
Amber ................ REG exchange loopback is active.
Table 1. LED Indications
Four tricolored faceplate LEDs indicate the following REG states:

4 Section 61246043L3-5, Issue 1 61246043L3-5A
Table 2. HDSL Encapsulated REG Unit Specifications
Loop Interface
Modulation Type........................ 2B1Q
Mode .......................................... Full duplex, echo cancelling
Number of Pairs .........................Two per loop interface
Bit Rate ...................................... 1168 kbps per pair
Baud Rate ................................... 584K baud per pair
Service Range ............................ 4.5 km over 0.5 mm diameter wire
Loop Loss................................... 27 dB maximum @ 150 kHz
Bridged Taps ..............................Two taps, 500 meters maximum each
Performance ............................... Compliant with ETSI TS 101 135
HDSL Tx Signal Level .............. 12.0 dBm - 14.0 dBm
Input Impedance......................... 135Ω
Po er
Input Power ................................ Span-powered by LTU) 5.5 W maximum
Tests
Diagnostics ................................. Loopback toward exchange initiated from LTU
Physical
Dimensions ................................ 6.2" high x 8.25" wide x 1.3" deep 157.5mm high x 209.6mm wide x
33.0mm deep)
Weight ........................................ < 4 lbs.
Environment
Temperature ............................... Operating Standard): -40°C to +60°C; Storage: -40°C to +85°C

61246043L3-5A Section 61246043L3-5, Issue 1 5
7. WARRANTY AND CUSTOMER SERVICE
ADTRAN will replace or repair this product within
1 year from the date of shipment if it does not meet
its published specifications or fails while in service
see ADTRAN International Equipment Warranty,
Repair, and Return olicy and rocedure,
document 60000003-3).
Contact Customer and Product Service CAPS)
prior to returning equipment to ADTRAN.
For service, CAPS requests, or further information,
contact one of the following numbers:
ADTRAN, Inc.
Attention: International Department
901 Explorer Boulevard
Huntsville, Alabama 35806
USA
www.adtran.com
Asia Pacific - Hong Kong
852 2824-8283 voice
852 2824-8928 fax
[email protected]
Canada - Ontario
1 416 290-0585 voice
1 416 296-1259 fax
[email protected]
Canada - Quebec
1 877 923-8726 toll free
1 514 940-2888 voice
1 514 940-2890 fax
[email protected]
Canada - Other Provinces
1 877 923-8726 toll free
[email protected]
Europe - Zurich, Switzerland
41 1 880 27 77 voice
41 1 880 27 78 fax
[email protected]
Latin America
1 954 746-5355 voice
1 954 746-7540 fax
[email protected]
Mexico/Caribbean
1 954 577-0357 voice
1 954 577-0358 fax
[email protected]
U. S. Headquarters
1 256 963-2500 voice
1 256 963-6300 fax
1 256 963-8200 fax back
[email protected]

6 Section 61246043L3-5, Issue 1 61246043L3-5A