ADC Network Card EDU 409 User Manual

  
   
    
     
      
       
HiGain  
USER MANUAL  
EDU-409  
HiGain  
DOUBLER  
L
EDU-409 List 1 Doubler Unit  
Product Catalog: 150-409-115-05  
STATUS  
 
150-409-115-05, Issue 5  
Using This Manual  
USING THIS MANUAL  
The following conventions are used in this manual:  
Monospace type indicates screen text.  
Keys you press are indicated by small icons such as Y or ENTER . Key  
combinations to be pressed simultaneously are indicated with a plus sign  
as follows: CTRL + ESC .  
Items you select are in bold.  
Three types of messages, identified by icons, appear in text.  
Notes contain information about special circumstances.  
Cautions indicate the possibility of personal injury or  
equipment damage.  
The Electrostatic Discharge (ESD) symbol indicates that a  
device or assembly is susceptible to damage from electrostatic  
discharge.  
For a list of abbreviations used in this document, refer to “Glossary” on  
page 25.  
UNPACK AND INSPECT YOUR SHIPMENT  
Upon receipt of the equipment:  
Unpack each container and inspect the contents for signs of damage. If  
the equipment has been damaged in transit, immediately report the extent  
of damage to the transportation company and to ADC DSL Systems, Inc.  
Order replacement equipment, if necessary.  
Check the packing list to ensure complete and accurate shipment of each  
listed item. If the shipment is short or irregular, contact ADC DSL  
Systems, Inc. as described in “Product Support” on page 23. If you must  
store the equipment for a prolonged period, store the equipment in its  
original container.  
EDU-409 List 1  
January 26, 2000  
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Unpack and Inspect Your Shipment  
150-409-115-05, Issue 5  
iv  
January 26, 2000  
EDU-409 List 1  
 
150-409-115-05, Issue 5  
TABLE OF CONTENTS  
Product Description ______________________________________ 5  
Technical Specifications__________________________________ 21  
Product Support ________________________________________ 23  
Abbreviations __________________________________________ 24  
Glossary_______________________________________________ 25  
Certification and Warranty__________________Inside Back Cover  
EDU-409 List 1  
January 26, 2000  
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List of Figures  
150-409-115-05, Issue 5  
LIST OF FIGURES  
1. EDU-409 List 1 Front Panel..................................................................6  
2. Installing the EDU-409 List 1 in a Remote Enclosure..........................8  
3. HiGain Loopbacks...............................................................................10  
4. Doubler Block Diagram ......................................................................11  
5. AT&T 819 Enclosure ..........................................................................17  
LIST OF TABLES  
2. EDU-409 List 1 Circuit Ranges ............................................................3  
3. Front Panel Components and Labels.....................................................6  
4. Front Panel Status Indicator ..................................................................9  
5. Indoor Enclosure Capacities................................................................13  
6. Outdoor Enclosure Capacities with Full Solar Load...........................14  
7. Fault Isolation Guide...........................................................................20  
vi  
January 26, 2000  
EDU-409 List 1  
 
150-409-115-05, Issue 5  
Overview  
OVERVIEW  
The HiGain® EDU-409 List 1 List 1 is a low-power doubler unit that extends  
the range of a HiGain repeaterless G.703 transmission system. The doubler  
units are installed between any doubler-compatible HiGain E1 Line Unit  
(ELU) and HiGain E1 Doubler (EDU) or HiGain E1 Remote Unit (ERU).  
They allow 2.048 Mbps transmission over twice the normal High Capacity  
Digital Service (HCDS) range.  
Adding a doubler can double the HCDS range to approximately 7.32 km  
(24,000 feet) of 0.51-mm wire or 5.49 km (18,000 feet) of 0.4-mm wire loops.  
Two doublers can triple the HCDS range to 10.97 km (36,000 feet) of  
0.51-mm wire or to 8.22 km (27,000 feet) of 0.4-mm wire loops. Three  
doublers extend the 0.51-mm wire range to 14.6 km (48,000 feet).  
FEATURES  
The EDU-409 List 1 includes:  
Occupation of one standard 239 T1 mechanics slot  
Power by any doubler-compatible HiGain line unit  
Front-panel status display LED  
Lightning and power-cross protection on both sides of the High bit-rate  
Digital Subscriber Line (HDSL) interface  
Extremely low power dissipation  
Extremely low latency  
Compatibility with a 4-span line-powered circuit  
Minimal wander and jitter  
EDU-409 List 1  
January 26, 2000  
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Overview  
150-409-115-05, Issue 5  
APPLICATIONS  
HiGain doublers operate with any number of T1, Plain Old Telephone  
Service (POTS), Digital Data Service (DDS), or other HiGain systems  
sharing the same cable binder group.  
The EDU-409 List 1 has a range of up to 35 dB loss at 260 kHz on each of  
the four HDSL loops. A list of HDSL signal cable losses for various cable  
gauges at 260 kHz and 135 is provided in Table 1. The table is applicable  
to HDSL cable pairs running between the ELU and the EDU-409 List 1 and  
between the EDU-409 List 1 and another EDU or ERU.  
Table 1. HDSL Signal Cable Loss  
Loss @ 260 kHz  
Cable Gauge  
per km  
(dB/km)(a)  
0.4 mm/26 AWG  
0.51 mm/24 AWG  
0.61 mm/22 AWG  
0.91 mm/19 AWG  
13.94  
10.47  
8.14  
272  
171  
105  
52  
5.74  
(a) Add 3 dB for each bridged tap and 1 dB for each cable gauge change.  
The EDU-409 List 1 can be used in two-span to four-span circuits, depending  
on the models of the ELU and ERU being used with the doubler units and the  
power option chosen for the ERU. The number of doublers is equal to one less  
than the number of Spans (as shown in Figure 3 on page 10).  
2
January 26, 2000  
EDU-409 List 1  
 
   
150-409-115-05, Issue 5  
Overview  
Table 2 lists the maximum number of EDU-409 List 1 doubler units that can  
be deployed as a function of the ELU and ERU that are used with it.  
Table 2. EDU-409 List 1 Circuit Ranges  
Maximum Number of EDU-409 List 1 Doublers Per  
Circuit  
ELU Model  
Local Powered Remote(a)  
Line Powered Remote  
ELU-319 List 5D  
ELU-319 List 6D  
1
2
3(b)  
ELU-319 List 5E  
ELU-319 List 6E  
2
(a) Requires ERU-412 List 1D and List 2D. ERU-412 List 1E and 2E do not support  
local power.  
(b) Requires ERU-412 List 1E and 2E  
Each span can take up to 30 seconds to acquire HDSL  
synchronization. The total time to acquire end-to-end  
synchronization increases with the number of spans.  
EDU-409 List 1  
January 26, 2000  
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Overview  
150-409-115-05, Issue 5  
The physical location of the doublers is driven by the following three  
deployment rules:  
1
Place the enclosures at the electrical limits, 35 dB, of each span. This  
places the first doubler at the 35 dB location, the second at 70 dB, and so  
on, allowing the maximum circuit range to be realized.  
Caution must be observed when pushing doubler spans to  
their 35 dB maximum range. Refer to ADCs Technical  
Advisory #TA-015 on HiGain operating ranges and general  
deployment guidelines.  
2
3
If Rule 1 is not applicable, then try to make all spans the same electrical  
length (same 260 kHz loss). This minimizes the maximum span loss and  
assures maximum operating margin, resulting in optimal transmission  
performance on the HDSL cable pairs. If specific application constraints  
preclude using Rule 2, or if two different circuit layout choices have the  
same maximum span loss, then use Rule 3.  
If Rules 1 and 2 are not applicable, make the spans closer to the ELU as  
short as possible while making the spans farther from the ELU as long as  
possible. This choice minimizes the I2R loss in the cable pairs, and  
reduces the thermal stress on the ELU. Following this rule minimizes the  
power consumption and dissipation of the ELU that provides the doubler  
power.  
Only those ERUs that have a local powering option can be  
used in local ERU-powered applications.  
4
January 26, 2000  
EDU-409 List 1  
 
 
150-409-115-05, Issue 5  
Product Description  
PRODUCT DESCRIPTION  
The EDU-409 List 1 List 1 includes:  
An open-framed cover  
A front panel featuring:  
Status display  
Configuration number  
COVER  
The open-framed cover reduces thermal stress and improves reliability  
allowing air to freely circulate over all components. The open cover also  
permits the doubler to be easily distinguished from the 239 T1 repeater.  
EDU-409 List 1  
January 26, 2000  
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Product Description  
150-409-115-05, Issue 5  
FRONT PANEL  
Figure 1 shows the front panel of the EDU-409 List 1, and Table 3 describes  
the doubler unit components.  
EDU-409  
HiGain  
DOUBLER  
L
Status LED  
STATUS  
Configuration  
number label  
(located on side)  
Figure 1. EDU-409 List 1 Front Panel  
Table 3. Front Panel Components and Labels  
Name  
Function  
Status LED  
Indicates operational status of doubler. See Table 4 on page 9.  
Configuration  
number  
Contains either a five-digit or six-digit warranty configuration number or  
a standalone two or three-digit configuration number as follows:  
Digit 1 = Last digit of shipment year  
Digits 2 and 3 = Shipment month  
Digits 4 and 5 = Configuration number  
The configuration number can also be found on a small bar label that also  
contains the Julian date code and part number. This gummed label may  
be attached to the PC board or to the front panel.  
6
January 26, 2000  
EDU-409 List 1  
 
     
150-409-115-05, Issue 5  
Installation  
INSTALLATION  
This section describes the compatibility and installation for the EDU-409  
List 1.  
COMPATIBILITY  
The EDU-409 List 1 is compatible with the following ADC outdoor  
enclosures:  
HRE-500, single-slot unit  
HRE-458, 10-slot unit  
HRE-819, 12-slot unit  
INSTALLING THE EDU-409 LIST 1  
To install the EDU-409 List 1 in an enclosure, perform the following steps  
and refer to the enclosure installation manual for information about cabling,  
proper connections, grounding, and line and local power.  
This product incorporates static sensitive components.  
Proper electrostatic discharge procedures must be followed.  
To install the doubler unit, slide the doubler unit into the card guides for the  
desired slot (see Figure 2 on page 8). Then push the unit into the enclosure  
until it is seated in the card-edge connector. The unit should snap into place,  
indicating that it is properly seated.  
EDU-409 List 1  
January 26, 2000  
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Installation  
150-409-115-05, Issue 5  
Figure 2. Installing the EDU-409 List 1 in a Remote Enclosure  
Some enclosures may require you to adjust the retaining bar  
located on the front of the enclosure to secure the unit. Refer  
to the appropriate ADC user manual for the enclosure.  
Once the EDU-409 List 1 is installed in the enclosure, the front panel Status  
LED flashes green if power is applied from an upstream line unit. When the  
loops on both sides of the EDU synchronize, the LED constantly glows solid  
green. Refer to the section titled Alarmson page 9 for more details on LED  
operation.  
8
January 26, 2000  
EDU-409 List 1  
 
 
150-409-115-05, Issue 5  
Alarms  
ALARMS  
The front panel of the EDU-409 List 1 contains a tri-color LED. The LED  
color and activity provides information on system functionality (see Table 4).  
Table 4. Front Panel Status Indicator  
LED  
Description  
Flashing Green once  
per second  
Indicates synchronization is being attempted between the  
EDU-409 List 1 and the upstream (network) module.  
Flashing Green more  
Indicates synchronization is being attempted between the  
than once per second EDU-409 List 1 and the downstream (customer) module.  
Steady Green  
Indicates HDSL frame synchronization has been achieved  
between the EDU-409 List 1 and both the upstream and  
downstream modules.  
Flashing Red once per Indicates an HDSL Cyclic Redundancy Check (CRC) error has  
second  
occurred between the EDU-409 List 1 and the upstream module.  
See "Technical Specifications" on page 21.  
Flashing Red more  
Indicates an HDSL CRC error has occurred between the  
than once per second EDU-409 List 1 and the downstream module. See "Technical  
Specifications" on page 21.  
Flashing Yellow once Indicates an NDU (Network Doubler Unit) loopback is in effect in  
per second  
the EDU-409 List 1 towards the network. This tests the integrity of  
the upstream span.  
Flashing Yellow more Indicates a CDU (EDU-409 List 1 to customer) loopback is in  
than once per second effect in the EDU-409 List 1 towards the customer. This tests the  
integrity of the downstream span.  
EDU-409 List 1  
January 26, 2000  
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Loopback Operation  
150-409-115-05, Issue 5  
LOOPBACK OPERATION  
When equipped with the EDU-409 List 1, a HiGain system can execute a  
number of loopback commands. The loopbacks can be initiated from the ELU  
craft port or from the ELU front-panel buttons.  
For more information about doubler loopback commands, refer to the  
appropriate ELU practices (seeProduct Supporton page 23).  
All NDU loopbacks are towards the network. All CDU loopbacks are towards  
the customer. Figure 3 is a diagram of a HiGain loopback system.  
Figure 3. HiGain Loopbacks  
10  
January 26, 2000  
EDU-409 List 1  
 
   
150-409-115-05, Issue 5  
Functional Description  
FUNCTIONAL DESCRIPTION  
HiGain uses the ADC Two-Binary, One-Quaternary (2B1Q) HDSL  
transceiver system to establish two full-duplex 1040 kbps data channels  
between the ELU and the ERU units. Each EDU-409 List 1 increases the  
maximum range by approximately 3.66 km (12,000 feet) of 0.51-mm wire or  
2.74 km (9,000 feet) of 0.4-mm wire per doubler.  
A block diagram of the EDU-409 List 1 with pinouts is shown in Figure 4.  
The doubler unit power supply uses the HDSL simplified line voltage to  
produce +5 Vdc and +3 Vdc required by the EDU-409 List 1 electronics. The  
power feed is passed on to the HDSL output pair, to power a second doubler  
or a remote unit.  
The maximum power dissipation of the doubler unit is 3 W.  
Figure 4. Doubler Block Diagram  
EDU-409 List 1  
January 26, 2000  
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Functional Description  
150-409-115-05, Issue 5  
SOLAR LOAD  
The EDU-409 List 1 can be housed in a variety of outdoor enclosures  
manufactured by ADC and other vendors. The number of doublers used in  
any of the enclosures depends on the maximum outside ambient temperature.  
The doubler capacities for several of these standard enclosures is listed in  
Table 5 on page 13 and Table 6 on page 14. The capacities listed in Table 6  
(for both indoor and outdoor enclosures) are based on a maximum outside  
temperature of +46.1 °C (+115 °F). Consult ADC for the latest deployment  
rules when using the enclosures at ambient temperatures above +46.1 °C.  
These requirements comply with Bellcore standards, which  
require HDSL equipment place in outdoor cabinets to operate  
in a temperature, outside the housing, of -40 °F (-40 °C) with  
no solar load and +115 °F (+46.1 °C) with a maximum solar  
load and maximum power dissipation.  
Full solar load is equal to maximum sunlight exposure as  
defined in Bellcores Technical Advisory TR-TSY-000057.  
12  
January 26, 2000  
EDU-409 List 1  
 
 
150-409-115-05, Issue 5  
Functional Description  
The capacities listed for the indoor enclosures in Table 5 assume no solar  
load. The capacities listed for the outdoor enclosures in Table 6 assume a full  
solar load as described above. The Recommended Slot Assignment for  
Maximum Capacitycolumn assigns slots according to the following thermal  
stress reduction rules:  
1
Always leave at least one empty slot between adjacent doublers. The  
adjacency rule only applies to the left- and right-hand sides of the  
doubler. The top of one unit can be adjacent to the bottom of another,  
though the latter configuration should be avoided if possible.  
Rule 1 does not apply to the HRE-458 and HRE-819 enclosures  
since these products have the required slot separations  
already built into their design.  
2
Allow as much room as possible between doublers on all four sides.  
Slot assignments that do not follow the recommended  
configurations in Table 5 and Table 6 are permissible as long  
as the above two rules are applied. Otherwise, damage may  
occur to doubler units.  
Table 5. Indoor Enclosure Capacities  
EDU-409 List 239 T1  
Vendor  
Description  
Model #  
1 Doubler  
Capacity  
Repeater  
Capacity  
CHARLES  
Indoor wall mount  
CiAC2300  
CiAC2002  
4400-09  
7
7
2
2
SPC  
Indoor rack and wall  
mount  
18  
18  
EDU-409 List 1  
January 26, 2000  
13  
 
 
Functional Description  
150-409-115-05, Issue 5  
Table 6. Outdoor Enclosure Capacities with Full Solar Load  
EDU-409  
List 1  
Doubler  
Capacity  
Recommended Slot  
Assignment for  
Maximum  
239 T1  
Repeater  
Capacity  
Vendor  
Description Model No.  
Capacity  
AT&T  
OutdoorDual 819  
chamber  
12  
25  
1, 3, 5, 9, 11, 13, 15,  
17, 19, 21, 23, 25  
(See Figure 5 on  
page 17)  
pole/wall  
mount  
AT&T  
AT&T  
Outdoor 841 27A, B, C or 11 per  
25 per  
1, 3, 6, 8, 10, 11, 12,  
cabinet  
D shelf  
shelf/44  
total  
shelf/100 16, 18, 20, 23, 25  
total  
Outdoor  
cabinet  
809  
6
12  
All even or all  
odd-numbered slots.  
ALCATEL Outdoor  
canister,  
621204  
621205  
621206  
5
7
9
12  
25  
50  
1, 3, 5, 8, 10  
2, 5, 9, 12, 14, 17, 24  
pole/wall  
mount  
2, 5, 9, 12, 14, 17, 24,  
31, 47  
CHARLES Outdoor  
canister,  
CiAC4306  
3
6
All even or all  
odd-numbered slots.  
pole/wall  
CiAC3300  
CiAC5312  
2
5
3
1, 3  
mount  
12  
All even or all  
odd-numbered slots.  
CiAC5325  
CiAC5350  
7
9
25  
50  
1, 3, 9, 11, 13, 17, 22  
1, 5, 9, 14, 16, 23, 32,  
41, 49  
SIERRA  
Outdoor  
canister,  
pole/wall  
mount  
3011  
3
6
All even or all  
odd-numbered slots.  
SUNRISE  
SPC  
3021  
3
3
5
7
8
5
1, 3, 5  
Outdoor  
canister,  
pole/wall  
mount  
7130-08FP  
7130-12FP  
7130-25FP  
HRE-458  
8
1, 3, 6  
12  
25  
10  
1, 3, 5, 7, 11  
2, 4, 8, 11, 14, 16, 25  
1, 2, 4, 5, 7, 8, 9, 10  
ADC  
Outdoor  
canister,  
pole/wall  
mount  
14  
January 26, 2000  
EDU-409 List 1  
 
 
150-409-115-05, Issue 5  
Functional Description  
Table 6. Outdoor Enclosure Capacities with Full Solar Load (Cont.)  
EDU-409  
List 1  
Doubler  
Capacity  
Recommended Slot  
Assignment for  
Maximum  
239 T1  
Repeater  
Capacity  
Vendor  
Description Model No.  
Capacity  
ADC  
Outdoor  
dual  
HRE-819  
12  
12  
All slots  
chamber,  
pole/wall  
mount  
Some of the Table 6 capacities are conservative estimates.  
Ongoing tests at ADC may result in increasing some of these  
estimates.  
Thermal constraints must be observed to ensure reliable  
service for worst-case conditions.  
EDU-409 List 1  
January 26, 2000  
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Functional Description  
150-409-115-05, Issue 5  
ALTERNATIVE DOUBLER ENCLOSURE  
CAPACITIES  
The number of doublers can be increased by two for applications where the  
enclosures are underground or not exposed to direct sunlight. However, any  
increase in capacity is still subject to rule 1 on page 4.  
The doubler capacity numbers listed for each outdoor  
enclosure must be reduced by one for every additional  
+5 °F (+2.8 °C) rise, or any fraction thereof, in outside ambient  
temperatures above +115 °F (+46.1 °C).  
The capacities can be increased by one for every additional  
+5 °F (+2.8 °C) reduction in outside ambient temperatures  
above +115 °F (+46.1 °C).  
Reduce the doubler capacity by one for every two doublers that do not have  
an empty slot between them. If the application allows seven doublers, but two  
are directly adjacent to each other, then the total capacity must be reduced to  
six.  
Standard T1 repeaters can be installed in the same enclosure with doubler  
units. If this method is used, the maximum number of doublers that can  
occupy the same case with the standard repeaters must be reduced by one for  
every four T1 repeaters (or fractions thereof) installed. T1 repeaters located  
with doublers in outdoor enclosures should be placed in slots that are not  
adjacent to the doublers.  
Rule 1 in the section titled Doubler Enclosure Capacities with  
Full Solar Loadon page 12 does not apply if the adjacent slot  
is occupied by a T1 repeater.  
16  
January 26, 2000  
EDU-409 List 1  
 
 
150-409-115-05, Issue 5  
Functional Description  
The AT&T 819 enclosure has two, individual isolated chambers as shown in  
Figure 5. Slots 1 through 14 are in one chamber. The other chamber contains  
slots 15 through 25 along with the Pressure (PRES), Filter (FIL), Capacitor  
(CAP), and COIL slots.  
.
Figure 5. AT&T 819 Enclosure  
The AT&T 819 can house up to 13 EDU-409 List 1 doublers in the slots  
designated as D1 through D13 as shown in Figure 5.  
Because the length of the EDU-409 List 1 extends beyond the  
range that older AT&T 819 repeater apparatus covers can  
accommodate, the cover must be replaced by a deeper cover.  
EDU-409 List 1  
January 26, 2000  
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Functional Description  
150-409-115-05, Issue 5  
MICRO DOUBLER CAPACITY DEPLOYMENT  
RULES  
The deployment rules for micro doubler capacity are summarized below:  
1
2
Use Table 5 on page 13 for indoor enclosures.  
Use Table 6 on page 14 for outdoor enclosures with Full Solar Load for  
ambient temperatures up to 46.1 °C maximum.  
3
4
5
6
7
The capacities shown in Table 6 can be increased by two for non-solar  
load (shaded or manhole applications).  
Decrease capacities in Table 6 by one for every 2.7 °C increase, or  
fraction thereof, in ambient temperatures above 46.1 °C.  
Increase the capacities by one for every full +2.7 °C reduction in ambient  
temperature below 46.1 °C.  
Decrease any outdoor capacity by one for every four E1 repeaters, or  
fraction thereof, that are installed with the doublers.  
For all outdoor applications, decrease the capacity by one for every two  
adjacent doublers that are not separated by at least one empty slot.  
18  
January 26, 2000  
EDU-409 List 1  
 
 
150-409-115-05, Issue 5  
Ground Faults  
GROUND FAULTS  
GROUND FAULT DETECTION  
The EDU-409 List 1 has ground fault detection (GFD) circuits. When used  
with HiGain line units, ground faults occurring at any point along any span  
are immediately detected. Ground fault conditions shut the HiGain circuit  
down. The line unit periodically tries to apply power to the first span to  
determine whether the fault condition is still present. As long as the condition  
exists, the power cycling and ground fault protection continues. To  
discontinue the ground fault protection, locate and repair the fault in the  
cable.  
Circuits containing both the EDU-409 List 1 and older doublers without a  
GFD circuit also support this new ground fault detecting feature, provided the  
doubler nearest the ELU is an EDU-409 List 1.  
The operation of the ground fault circuit requires that the  
doubler enclosure ground plane is properly connected to  
earth ground.  
EDU-409 List 1  
January 26, 2000  
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Ground Faults  
150-409-115-05, Issue 5  
GROUND FAULT ISOLATION  
Solutions for common problems that may occur with the EDU-409 List 1 are  
listed in Table 7.  
Table 7. Fault Isolation Guide  
Problem  
Solution  
LED does  
not light  
1 Verify that the ELU is installed and operational in the Central Office.  
2 Verify proper cabling between the doubler enclosure and the Central  
Office.  
3 Measure 100 to 200 Vdc between pins 5 or 6 and 8 or 9. This voltage  
peaks every 15 to 30 seconds as the ELU cycles between self test and  
line power. If less than 100 Vdc is present, check the cabling or the ELU.  
Only the line units mentioned in the Description and Features section  
can be used to power doublers. Other ELU models may not provide  
reliable operation and should not be used.  
LED  
Synchronization is being attempted with the upstream unit.  
continues to  
flash green  
once a  
second  
EDU-409  
The ELU at the Central Office is not present. Measure the resistance of the  
List 1 loses HDSL input loop. Resistance should be normal loop resistance plus the  
power  
25 signature of the ELU.  
HDSL line  
power only  
appears in  
very short  
bursts  
A grounded pair is being detected by either the ELU or EDU-409 List 1 in  
Span 1. This causes the unit’s ground fault detection (GFD) circuit to  
trigger, which forces the HDSL line voltage off immediately after it cycles  
on. Remove the ELU and EDU-409 List 1 and check for cable ground faults  
in Span 1. The doubler’s GFD circuit can easily be checked by grounding  
any of the loop connectors to the doubler. This forces the circuit down  
immediately. If the circuit stays up, either the GFD circuit is defective or the  
EDU-409 List 1 is not properly grounded.  
EDU-409  
A grounded pair is being detected by the EDU-409 List 1 in Span 2. Remove  
List 1 shuts EDU-409 List 1 and check for ground fault in Span 2.  
off after  
Span 1  
comes up  
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January 26, 2000  
EDU-409 List 1  
 
   
150-409-115-05, Issue 5  
Technical Specifications  
TECHNICAL SPECIFICATIONS  
HDSL  
Line Code  
1040 kbps, 2B1Q full duplex  
Output  
+13 dBm  
Line Impedance  
Resistive Signature  
135 Ω  
Input/Output: 25 (maximum)  
Line Output DC: 25 (maximum)  
Start-up Time (per span)  
15 seconds (typical), 30 seconds  
(maximum)  
Line Clock Rate  
Internal Stratum 4 clock  
Power Consumption  
3.0 W (nominal), 3.2 W (maximum)  
Maximum Provisioning Loss  
35 dB @ 260 kHz, 135 Ω  
Wander and Jitter  
Nominal - The absence of an HDSL framer from the EDU-409 List 1  
reduces the Doubler Units effect on a circuits overall wander and jitter to  
second order insignificance when compared to the wander and jitter of  
other circuit modules.  
Latency  
80 microseconds (maximum either direction)  
Mounting  
Single 239 T1 Mechanics slot  
Electrical Protection  
Secondary surge and power cross protection on all HDSL ports  
EDU-409 List 1  
January 26, 2000  
21  
 
 
Technical Specifications  
150-409-115-05, Issue 5  
Environmental  
Operating Temperature  
-40 °C (-40 °F) to +70 °C (+158 °F)  
Operating Humidity  
(non-condensing)  
5% to 95%  
Operating Temperature in  
Outside Enclosures  
Complies with Section 10.2.1.3 of  
TA-NWT-001210  
Operating Elevation  
60.96 m (200 feet) below sea level to  
3.96 km (13,000 feet) above sea level  
Dimensions  
Height  
6.6 cm (2.6 inch)  
1.9 cm (0.75 inch)  
16.5 cm (6.5 inch)  
1.76 kg (0.8 lbs)  
Width  
Depth  
Weight  
Standards Compliance  
EN-60950 Low Voltage  
22  
January 26, 2000  
EDU-409 List 1  
 
150-409-115-05, Issue 5  
Product Support  
PRODUCT SUPPORT  
ADC Customer Service Group provides expert pre-sales and post-sales  
support and training for all its products.  
Technical support is available 24 hours a day, 7 days a week by contacting  
the ADC Technical Assistance Center (TAC).  
Quotation Proposals  
Sales Assistance  
Ordering and Delivery  
General Product Information  
800.366.3891 extension 73000  
(USA and Canada)  
952.917.3000  
Fax: 952.917.3237  
Complete Solutions (from concept to  
installation)  
Systems Integration  
800.366.3891, extension 73000  
(USA and Canada)  
Network Design and Integration Testing  
System Turn-Up and Testing  
952.917.3000  
Network Monitoring (upstream or downstream)  
Power Monitoring and Remote Surveillance  
Service/Maintenance Agreements  
Systems Operation  
Technical Information  
ADC Technical Assistance Center  
800.638.0031  
714.730.3222  
Fax: 714.730.2400  
System/Network Configuration  
Product Specification and Application  
Training (product-specific)  
Installation and Operation Assistance  
Troubleshooting and Repair/Field Assistance  
Online Technical Support  
Online Technical Publications  
ADC Return Material Authorization (RMA)  
number and instructions must be obtained  
before returning products.  
Product Return Department  
800.366.3891 ext. 73748 or  
952.917.3748  
Fax: 952.917.3237  
Email: repair&[email protected]  
All 800 lines are toll-free in the USA and Canada.  
EDU-409 List 1  
January 26, 2000  
23  
 
   
Abbreviations  
150-409-115-05, Issue 5  
ABBREVIATIONS  
AIS  
Alarm Indicator Signal  
Capacitor  
CAP  
CDU  
CRC  
DDS  
EDU  
ELU  
EDU to Customer loopback  
Cyclic Redundancy Check  
Digital Data Service  
HiGain E1 Doubler Unit  
HiGain E1 Line Unit  
ERU  
FIL  
HiGain E1 Remote Unit  
Filter  
GFD  
HCDS  
HDSL  
HRE  
KBPS  
MBPS  
NDU  
POTS  
PRES  
RMA  
SPLB  
Ground Fault Detection  
High Capacity Digital Service  
High bit-rate Digital Subscriber Line  
HiGain Remote Enclosure  
Kilo (thousand) Bits Per Second, sometimes written Kb/s  
Mega (million) Bits Per Second, sometimes written Mb/s  
EDU to Network Loopback  
Plain Old Telephone Service  
Pressure  
Return Material Authorization  
Special Loopback  
24  
January 26, 2000  
EDU-409 List 1  
 
 
150-409-115-05, Issue 5  
Glossary  
GLOSSARY  
American Wire  
Gauge  
The standard used to describe wire size. The diameter of the wire  
increases as the gauge decreases. 26 gauge is 4 mm (0.0157') in  
diameter, 24 gauge is 51 mm (0.0201'), and so on.  
Two-Binary, One-Quaternary. Line coding used for HDSL.  
A group of 25 pairs of wires.  
2B1Q  
Cable Binder  
Group  
Bridged Tap  
A pair of wires connected in parallel across a single line to form a T”  
configuration.  
Loop  
A length of twisted-pair copper wire connecting the local unit of an  
HDSL circuit to the remote unit.  
EDU-409 List 1  
January 26, 2000  
25  
 
   
Glossary  
150-409-115-05, Issue 5  
26  
January 26, 2000  
EDU-409 List 1  
 
150-409-115-05, Issue 5  
CISPR-A ComplianceCertification and Warranty  
CERTIFICATION AND WARRANTY  
CISPR-A COMPLIANCE  
This unit complies with the limits for CISPR-A for radiated emissions. 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, can 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. Refer  
to the installation section of the appropriate instruction manual for the unit you are installing to get  
information on cabling, correct connections and grounding  
LIMITED WARRANTY  
ADC DSL Systems, Incorporated (ADC) warrants that, for a period of sixty (60) months from the  
date of shipment, the hardware portion of its products will be free of material defects and faulty  
workmanship under normal use. ADC's obligation, under this warranty, is limited to replacing or  
repairing, at ADC's option, any such hardware product which is returned during the 60-month warranty  
period per ADC's instructions and which product is confirmed by ADC not to comply with the  
foregoing warranty.  
ADC warrants that, for a period of 90 days from the date of purchase, the software furnished with its  
products will operate substantially in accordance with the ADC published specifications and  
documentation for such software. ADCs entire liability for software that does not comply with the  
foregoing warranty and is reported to ADC during the 90-day warranty period is, at ADCs option,  
either (a) return of the price paid or (b) repair or replace of the software. ADC also warrants that, for a  
period of thirty (30) days from the date of purchase, the media on which software is stored will be free  
from material defects under normal use. ADC will replace defective media at no charge if it is returned  
to ADC during the 30-day warranty period along with proof of the date of shipment.  
The transportation charges for shipment of returned products to ADC will be prepaid by the Buyer.  
ADC will pay transportation charges for shipment of replacement products to Buyer, unless no trouble  
is found (NTF), in which case the Buyer will pay transportation charges.  
ADC may use reconditioned parts for such repair or replacement. This warranty does not apply to any  
product which has been repaired, worked upon, or altered by persons not authorized by ADC or in  
ADC's sole judgment has subjected to misuse, accident, fire or other casualty, or operation beyond its  
design range.  
Repaired products have a 90-day warranty, or until the end of the original warranty periodwhichever  
period is greater.  
ADC DISCLAIMS ALL OTHER WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING  
BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS  
FOR A PARTICULAR PURPOSE, WITH RESPECT TO ITS PRODUCTS AND ANY  
ACCOMPANYING WRITTEN MATERIALS. FURTHER, ADC DOES NOT WARRANT THAT  
SOFTWARE WILL BE FREE FROM BUGS OR THAT ITS USE WILL BE UNINTERRUPTED OR  
REGARDING THE USE, OR THE RESULTS OF THE USE, OF THE SOFTWARE IN TERMS OF  
CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.  
EDU-409 List 1  
January 26, 2000  
27  
 
 
ADC DSL Systems, Inc.  
14402 Franklin Avenue  
Tustin, CA 92780-7013  
Tel:  
714.832.9922  
Fax: 714.832.9924  
Technical Assistance  
Tel:  
Tel:  
800.638.0031  
952.917.3222  
Fax: 714.730.2400  
ISO 9001/TL 9000  
DOCUMENT: 150-409-115-05, ISSUE 5  
´,4a¶0(¨  
DNV Certification, Inc.  
1220650  
REGISTERED FIRM  
 

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