Positron BRX-VDSL2 Bedienungsanleitung

BRX-VDSL2 User Guide 180-0153-001-R02

BRX-VDSL2

Broadband Reach eXtender –VDSL2

User Guide

March 2018

BRX-VDSL2 User Guide 1 180-0153-001-R02

Publication Information

BRX-VDSL2

User Guide

Publication date: March 2018

Printed in Canada

Published By

Positron Access Solutions Corporation

5101 Buchan Street, Suite 220

Montreal, Quebec, Canada

H4P 2R9

Telephone US and Canada: 1-888-577-5254

International: +1-514-345-2220

Product names, other than Positron's, mentioned herein may be trademarks and/or registered

trademarks their respective owners.

Disclaimer Notice

Although Positron Access Solutions Corp. has made every effort to ensure the accuracy of the

information contained herein, this document is subject to change.

BRX-VDSL2 User Guide 2 180-0153-001-R02

Regulatory Compliance and Safety

FCC Declaration of Conformance

All of the BRX-VDSL2 models (includes BRX-VDSL2-X models) comply with part 15 class A of the

FCC Rules. Operation is subject to the following two conditions (1) This device may not cause

harmful interference, and (2) this device must accept any interference received, including interference

that may cause undesired operation.

Part 15 Class A Information

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.

Industry Canada

All of the BRX-VDSL2 models (including BRX-VDSL2-X models) comply with ICES-003 of the

Industry Canada Rules. Operation is subject to the following two conditions: (1) This device may not

cause harmful interference, and (2) this device must accept any interference received, including

interference that may cause undesired operation.

Tous les produits BRX-VDSL2 (incluant les produits BRX-VDSL2-X) sont conformes à la norme NMB-

003 d'Industrie Canada. Leur fonctionnement est sujet aux deux conditions suivantes: (1) le dispositif

ne doit pas produire de brouillage préjudiciable, et (2) ce dispositif doit accepter tout brouillage reçu, y

compris un brouillage susceptible de provoquer un fonctionnement indésirable.

Safety

The following BRX-VDSL2 models conforms to IEC 60950-1/UL 60950-1/CSA C22.2 #60950-1

and IEC 60950-22/UL 60950-22/CSA C22.2 #60950-22 standards:

BRX-VDSL2-2, BRX-VDSL2-8, BRX-VDSL2-24 sealed units along with the following factory

installation of a BRX-24S chassis in a UL approved pedestal: BRX-VDSL2-24-1SF, BRX-

VDSL2-24-1-SPF, BRX-VDSL2-24-1-SXPF, BRX-VDSL2-48-1SF, BRX-VDSL2-48-1-SPF,

BRX-VDSL2-48-1-SXPF.

BRX-VDSL2-X-2, BRX-VDSL2-X-8, BRX-VDSL2-X-24 sealed units along with the following

factory installation of a BRX-24S chassis in a UL approved pedestal: BRX-VDSL2-X-24-1SF,

BRX-VDSL2-X-24-1-SPF, BRX-VDSL2-X-24-1-SXPF, BRX-VDSL2-X-48-1SF, BRX-VDSL2-

X-48-1-SPF, BRX-VDSL2-X-48-1-SXPF.

BRX-VDSL2 User Guide 3 180-0153-001-R02

BRX-24S factory installed in UL approved pedestal and ready to accept BRX modules: BRX-

24-CS, BRX-24-1S, BRX-24-1SX, BRX-48-1S and BRX-48-1SX.

The BRX-24S conforms to IEC 60950-1/UL 60950-1/CSA C22.2 #60950-1.

Les modèles BRX-VDSL2 suivants sont conformes aux normes IEC 60950-1/UL 60950-1/CAN

C22.2 #60950-1 et IEC 60950-22/UL 60950-22/CAN C22.2 #60950-22.

BRX-VDSL2-2, BRX-VDSL2-8, BRX-VDSL2-24 dans leur boitier scellés ainsi que les

configurations incorporant un châssis BRX-24S assemblées en usine dans un piédestal

certifié UL: BRX-VDSL2-24-1SF, BRX-VDSL2-24-1-SPF, BRX-VDSL2-24-1-SXPF, BRX-

VDSL2-48-1SF, BRX-VDSL2-48-1-SPF, BRX-VDSL2-48-1-SXPF.

BRX-VDSL2-X-2, BRX-VDSL2-X-8, BRX-VDSL2-X-24 dans leur boitier scellés ainsi que les

configurations incorporant un châssis BRX-24S assemblées en usine dans un piédestal

certifié UL: BRX-VDSL2-X-24-1SF, BRX-VDSL2-X-24-1-SPF, BRX-VDSL2-X-24-1-SXPF,

BRX-VDSL2-X-48-1SF, BRX-VDSL2-X-48-1-SPF, BRX-VDSL2-X-48-1-SXPF.

BRX-24S installé en usine dans un piédestal certifié UL et prêts à recevoir des modules BRX:

BRX-24-CS, BRX-24-1S, BRX-24-1SX, BRX-48-1S and BRX-48-1SX.

Le BRX-24S est conforme aux normes IEC 60950-1/UL 60950-1/CSA C22.2 #60950-1.

Precautions and warnings

Always use a circuit that provides POTS sealing current to the copper pair to power a BRX-VDSL2

unit. When deploying a BRX-VDSL2 on a copper pair without sealing current, always make sure to

use power injector devices approved by Positron Access Solutions for that use. Using power injectors

with voltage higher than 48V nominal may create risk of damaging the unit and void its warranty.

There are no user-serviceable parts in BRX-VDSL2 devices. Do not attempt to open the unit. Doing

so may damage the seals and prevent the unit from meeting its IP rating. Damaged seals may lead to

rain water leaking into the unit and damage to its electronics resulting into its malfunction or its total

failure. The BRX-VDSL2 devices should only be opened by a technician trained and certified to

service the product.

All wiring external to the product should follow the local wiring codes.

Be careful when splicing the BRX-VDSL2 pairs to the twisted telephone cable pairs. Dangerous

voltage can be present on the pairs. Splicing should be done by a qualified person. Never splice pairs

during a lightning storm.

BRX-VDSL2 User Guide 4 180-0153-001-R02

The equipment must be connected to a protective ground in accordance with the instructions provided

in this manual. Always ensure that BRX-VDSL2 units are connected to a chassis ground path of 25

ohms or less to avoid damage to the equipment from lightning strikes and other electrical surges.

Use of this product in a manner other than defined in this installation guide may cause damage to

equipment or injury to personnel.

All fuses on the unit are located in non-accessible areas and are not field serviceable. Please return

the unit to Positron Access Solutions for repair.

The BRX-VDSL2 products are intended for installation in Restricted Access Locations only whether

installed indoor or outdoor.

BRX-VDSL2 User Guide 5 180-0153-001-R02

Table of Contents

1General Description.........................................................................................................6

2BRX-VDSL2 Main Advantages.........................................................................................7

3Bandwidth Performance and Placement Flexibility ......................................................7

3.1 Expected Bandwidth Improvement with BRX-VDSL2 and BRX-VDSL2-X........................7

3.2 BRX-VDSL2 Placement Flexibility.......................................................................................9

3.3 Optimum Placement...........................................................................................................10

3.4 BRX-VDSL2 Calculator ...................................................................................................... 11

3.5 Miscellaneous Other Placement Guidelines ....................................................................12

4Technical Specifications................................................................................................14

5Packaging Information and Port Density .....................................................................15

5.1 BRX-VDSL2 1-pair & 2-pair packaging..............................................................................15

5.2 BRX-VDSL2 8-pair packaging............................................................................................15

5.3 BRX-VDSL2 24-pair packaging..........................................................................................16

6Installation and Operating Guidelines..........................................................................18

6.1 General Requirements for the Outside Plant (OSP).........................................................18

6.2 POTS / Voice Lines.............................................................................................................19

6.3 Equipment Connection Diagram.......................................................................................19

7Installation Procedure....................................................................................................21

7.1 Unpack................................................................................................................................21

7.2 Overview of the BRX-VDSL2 / BRX-VDSL2-X-2 enclosure..............................................21

7.3 Overview of the BRX-VDSL2-8 / BRX-VDSL2-X-8 enclosure...........................................22

7.4 Overview of the BRX-24S Chassis....................................................................................22

7.5 Step-by-step Installation Instructions ..............................................................................23

7.6 Splicing Pairs .....................................................................................................................27

8How to Mitigate the Impact of Disturbers.....................................................................27

8.1 Grounding and Bonding....................................................................................................27

8.2 Impulse Noise Protection ..................................................................................................29

9Troubleshooting Guidelines..........................................................................................30

10 Warranty and Customer Service...................................................................................36

11 Ordering Information .....................................................................................................37

Annex A.................................................................................................................................38

Annex B.................................................................................................................................41

Annex C.................................................................................................................................42

BRX-VDSL2 User Guide 6 180-0153-001-R02

1 General Description

The Broadband Reach eXtender –VDSL2 (BRX-VDSL2) is a fully integrated solution that increases

the bandwidth and/ or extends the reach of DSLAMs or MSANs to deliver higher bandwidth

services to underserved or unserved markets. For example, it extends the reach of a 25 Mbps

downstream / 3 Mbps upstream service from 4,000 feet (1.2 km) to 6,000 feet (1.8 km) on 24 AWG

/ 0.51mm gauge copper, an increase of almost 50%, and the same level of increase is achieved for

larger size cables. Furthermore, this 50% increase in reach results in an estimated 100% increase

in CSA (Customer Serving Area) since the area served is proportional to the square of the lineal

distance.

It is important to note that these benefits are obtained without the need to change the

DSLAM/MSAN or the user CPE. By significantly increasing the effective bandwidth and reach of

existing xDSL lines, operators can deliver true broadband speeds to each of their subscribers, even

those located in remote areas or currently located too far from the DSLAM to receive any service.

The BRX-VDSL2 comes in two (2) versions. While they perform the same amplification function

and can be used for most of the same applications, their design is optimized as per the following

table.

FEATURE

BRX-VDSL2

BRX-VDSL2-X

Amplification Range

4000-8500 feet (24 AWG)

4000 –10000 feet (24 AWG)

Max Loop Length for 25 / 3

Mbps on single pair (24

AWG)

6000 feet (Non-Vectored and

Vectored)

6500 feet (Non-Vectored and Vectored)

Max Distance for 50 / 8 Mbps

on bonded pairs (24 AWG)

6000 feet (Non-Vectored and

Vectored)

6500 feet (Non-Vectored) and Vectored)

VDSL2 range extension

Up to 1500 feet

Up to 2250 feet

CSA Expansion

77%

200%

Amplification ratio

Up to 1.2 Downstream / up to 4.0

Upstream

1.2 to 1.9 Downstream / up to 4.1

Upstream

Form Factor

Same form factor, each pair has 2 LEDs to indicate presence of current and loop

status

Enclosure Options

Available in 1, 2, 8, 24 and 48 pairs enclosures

Management

Manageable (Detection, Location, Alerting, Troubleshooting) with integration with

ASSIA DSL Expresse and with Nokia Network Analyzer Copper (NAC)

Operation over POTS pairs

100% compatible with presence of

active POTS line. Limited current

consumption to guarantee 100%

compliance with POTS devices

Requires BRX Power Injector to

guarantee 100% compliance with POTS

devices

Operation over Dry pairs

BRX Power Injector can be used to power the BRX-VDSL2 devices when

operating on dry pairs (no -48Vdc sealing current present)

Table 1: Summary feature comparison of BRX-VDSL2 and BRX-VDSL2-X

BRX-VDSL2 User Guide 7 180-0153-001-R02

2 BRX-VDSL2 Main Advantages

Extends the VDSL2 Customer Serving Area (CSA) by 77-200%.

Improve effective bandwidth of VDSL2 loops.

The BRX-VDSL2 uses the -48V sealing current of the POTS line. When deployed over

dry pairs (no POTS sealing current), it can be powered from the Positron BRX Power

Injector.

The BRX-VDSL2-X requires slightly more power than the BRX-VDSL2. It can operate

over standard POTS sealing current when there is no POTS (dial tone) service.

Otherwise, when operated jointly with a POTS service (dial tone) or when deployed over

a dry pair, it requires the use of the Positron BRX Power Injector

Flexible Shelf design allows more subscribers to be added in the future.

Turnkey pedestal option available.

Auto calibration, no software to configure or dip switch.

Easy to install, deploy, and maintain.

3 Bandwidth Performance and Placement Flexibility

3.1 Expected Bandwidth Improvement with BRX-VDSL2 and BRX-VDSL2-X

Both versions of the BRX-VDSL2 automatically adapt their operation to the actual line conditions to

optimize performance. They provide gain amplification of the signal in the downstream (D1 and D2

bands) and upstream (U0 and U1 bands) direction making sure that the amplified signal is always

within the acceptable spectrum mask and signal strength allowed by the VDSL2 standards. BRX-

VDSL2 devices significantly improve the signal to noise ratio seen by the CPE (in the downstream

direction) and the DSLAM (in the upstream direction).

The table below illustrates a few examples of the bandwidth increases one can expect with the

insertion of a BRX-VDSL2 or BRX-VDSL2-X:

BRX-VDSL2 Downstream Performance Increase (Typical Lines)

NO Vectoring

Total Loop Length

(24 AWG / 0.51 mm)

Not

Amplified

BRX-VDSL2

BRX-VDSL2-X

Feet

Meters

DS / US

(Mbps)

DS / US

(Mbps)

Improvement

Ratio

DS / US

(Mbps)

Improvement

Ratio

5000

1524

26.3 / 2.8

33.2 / 6.4

1.26 / 2.29

34.5 / 6.2

1.31 / 2.21

6000

1829

24.1 / 1.3

25.7 / 4.3

1.07 / 3.31

27.8 / 4.2

1.15 / 3.23

6500

1981

21.1 / 1.3

21.8 / 2.7

1.03 / 2.08

25.0 / 3.3

1.18 / 2.54

Table 2: Downstream Performance Increase Examples (Typical Lines) –NO Vectoring

BRX-VDSL2 User Guide 8 180-0153-001-R02

The graph below illustrates the amplified downstream bandwidth resulting from the use of BRX-

VDSL2 and BRX-VDSL2-X devices compared to the non-amplified (raw) bandwidth (24 AWG /

0.51mm copper gauge) with profile 17a in Non-Vectored mode. Profiles 8a, 8b and 8d achieve very

similar bandwidth amplification results.

Figure 1: Amplified Downstream VDSL2 Bandwidth vs non-amplified (raw) loops (distance in feet)

The amplified upstream bandwidth resulting from the use of BRX-VDSL2 and BRX-VDSL2-X devices

compared to the non-amplified (raw) bandwidth (24 AWG / 0.51mm copper gauge) with profile 17a in

Non-Vectored mode are shown below. Profiles 8a, 8b and 8d achieve very similar bandwidth

amplification results.

Figure 2: Amplified Upstream VDSL2 Bandwidth vs non-amplified (raw) loops (distance in feet)

BRX-VDSL2 User Guide 9 180-0153-001-R02

It should be noted that the Downstream and Upstream Bandwidth Performances above (both in the

graphs and in the table) are conservative as they are based on tests performed with traffic on the

other pairs of the cable binder (i.e. with crosstalk) and with otherwise typical copper line conditions.

Field experience has shown that the BRX-VDSL2 devices provide even better Improvement Ratios

(i.e. Bandwidth Enhancement) when faced with “less than ideal” line conditions where the bandwidth

is negatively impacted by bridge taps, influence from power lines and/or disturbances from other

pairs or the use of other protocols in the same binder such as T1/E1, HDSL, and G.SHDSL.

3.2 BRX-VDSL2 Placement Flexibility

Over and above the performance gains, one of the major advantages of the BRX-VDSL2 devices

over other products is that their placement along the loop is flexible and does not impose hard

constraints when choosing the location where they should be installed. For instance, on a 24 AWG

(0.51mm) loop of 6000 feet / 1.8 km, placing the BRX-VDSL2 anywhere between 3000 feet / 0.9 km

and 3750 feet / 1.15 km (2750 feet / 0.84 km and 3750 feet / 1.15 km) away from the DSLAM will

deliver a 25 / 4 Mbps service to the customer. The BRX-VDSL2-X will typically provide higher

performance in both the downstream and upstream when compared to the BRX-VDSL2 version.

Figure 3: Downstream Placement flexibility of BRX-VDSL2 on a 6000 feet loop

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