Positron BRX User manual

BRX Power Injector Installation Guide 180-0192-001-R01
Broadband Reach eXtender
Power Injector
(BRX-PWR)
Installation Guide
Document: 180-0192-001
March 2020

BRX Power Injector Installation Guide 2 180-0192-001-R01
Publication Information
©2020 Positron Access Solutions Corporation. All rights reserved.
Broadband Reach eXtender (BRX) Power Injector Quick Installation Guide
Publication date: March 2020
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: [phone]
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 Power Injector Installation Guide 3 180-0192-001-R01
Table of Contents
1Introduction.................................................................................................................................5
2Principles of Operation and Specification Summary................................................................6
2.1 Connecting the BRX Power Injector to the DSLAM via a cross-connect...................................7
2.2 Connecting the BRX Power Injector Directly to the DSLAM .....................................................7
2.3 Combining POTS pairs with BRX Power Injector pairs directly to the DSLAM..........................8
3Quick Installation: Step-by-step Instructions............................................................................9
3.1 Connecting the Power Source..................................................................................................9
3.1.1 Local -48Vdc Source......................................................................................................10
3.1.2 Local 110-220Vac Source..............................................................................................11
3.1.3 Express (RFT-V) Power Pairs ........................................................................................15
3.2 Grounding the BRX Power Injector ........................................................................................16
3.3 Using Bypass Section for POTS pairs....................................................................................17
3.4 Installing Copper Cables into BRX Power Injector..................................................................18
3.5 Sealing the Rubber Grommets before Installation..................................................................19
3.6 Installing additional BRX-PWR- M Module(s).........................................................................20
4BRX Power Injector Visual Indicators and Troubleshooting Guidelines...............................23
4.1 LED Descriptions...................................................................................................................23
4.2 Troubleshooting Steps for the BRX Power Injector.................................................................24
5Using BRX Power Injector with Popular DSLAM Platforms...................................................29
5.1 Adtran 1148V.........................................................................................................................29
5.2 Calix E3-48-r2........................................................................................................................30
5.3 Nokia 7330 ISAM...................................................................................................................30
5.4 Huawei MA5116S ..................................................................................................................31
6Regulatory Compliance and Safety .........................................................................................32
7Warranty and Customer Service..............................................................................................34

BRX Power Injector Installation Guide 4 180-0192-001-R01
List of Figures
FIGURE 1: BRX POWER INJECTOR –HIGH-LEVEL VIEW 5
FIGURE 2: INSIDE THE BRX POWER INJECTOR 6
FIGURE 3: CONNECTING THE BRX POWER INJECTOR TO THE DSLAM VIA A CROSS-CONNECT 7
FIGURE 4: CONNECTING THE BRX POWER INJECTOR DIRECTLY TO THE DSLAM 8
FIGURE 5: USING THE BRX POWER INJECTOR TO COMBINE POTS AND BRX POWER PAIRS 8
FIGURE 6: AC CABLE PRE-INSTALLED AND TERMINATED IN THE BRX POWER INJECTOR 11
FIGURE 7: CONNECTING THE BRX POWER INJECTOR TO AN ADTRAN 1148 SERIES DSLAM 29
FIGURE 8: CONNECTING THE BRX POWER INJECTOR TO A CALIX E3-48-R2 DSLAM 30
FIGURE 9: CONNECTING THE BRX POWER INJECTOR TO A NOKIA 7330 ISAM POTS SPLITTER 31
FIGURE 10: CONNECTING THE BRX POWER INJECTOR TO A HUAWEI MA5116S SERIES DSLAM 31
List of Tables
TABLE 1: BRX POWER INJECTOR POWERING OPTIONS AND ORDERING CODES 9
TABLE 2: CONNECTING A LOCAL -48VDC POWER SOURCE TO THE BRX POWER INJECTOR 10
TABLE 3: CONNECTING A LOCAL 110-220VAC POWER SOURCE TO THE BRX POWER INJECTOR 14
TABLE 4: CONNECTING RFT-V EXPRESS POWER PAIRS TO THE BRX POWER INJECTOR 15
TABLE 5: GROUNDING THE BRX POWER INJECTOR 16
TABLE 6: USING THE POTS BYPASS SECTION OF THE BRX POWER INJECTOR 18
TABLE 7: CONNECTING BRX POWER PAIRS TO THE CABLE BINDER FEEDING INTO POTS CONNECTOR OF DSLAM 19
TABLE 8: APPLYING A SILICON SEALANT TO THE RUBBER GROMMETS IN USE 20
TABLE 9: INSTALLING ADDITIONAL BRX-PWR-M MODULES IN BRX POWER INJECTOR 22
TABLE 10: POWER LED 23
TABLE 11: BRX POWER PAIR STATUS LED 23
TABLE 12: TROUBLESHOOTING THE BRX POWER INJECTOR 28

BRX Power Injector Installation Guide 5 180-0192-001-R01
1 Introduction
The Positron Broadband Reach eXtender (BRX) devices get their power from the -48Vdc sealing
current usually found on DSL + POTS pairs. Due in part to the migration away from POTS to VoIP or
data-only services (sometimes referred to as “naked DSL”), DSL pairs may lack a -48Vdc sealing
current. The increased use of bonded xDSL pairs means that the second (2nd) pair is often without
sealing current. Positron designed the BRX Power Injector to inject the -48Vdc sealing current to
power the BRX devices installed on xDSL pairs requiring amplification.
The BRX Power Injector installs adjacent to the DSLAM where its power pairs connect to the POTS
port of the DSLAM where the CO telephone pairs normally terminate. The DSLAM then acts as a
combiner to overlay the -48Vdc sealing current onto the DSL pair. The BRX Power Injector is
available in 8, 16 or 24 pair configurations packaged in a UL-rated IP65 enclosure as per Figure 1.
Figure 1: BRX Power Injector –high-level view
The approximate dimensions of the BRX Power Injector are: 16.35” High x 13.0“ Wide x 3.85” Deep or
415 mm H x 333 mm W x 98 mm D. The enclosure includes flanges to easily mount the BRX Power
Injector on a pole, stake or on the back of popular pedestals.

BRX Power Injector Installation Guide 6 180-0192-001-R01
2 Principles of Operation and Specification Summary
The BRX Power Injector offers the following features:
Wall-mount and Pole Mount options
Can be ordered in 8, 16 or 24 pairs configurations
Field upgradable by installing up to a total of three (3) 8-pair power modules
Flexible Power Input
Local -48Vdc, or
Local 110-220VAC with factory installed AC-DC Converter, or
Express (line) Powering: 1 or 2 pairs with factory installed: GE or ALPHA Down
Converter (±190Vdc to -48Vdc)
Output Pairs with BRX Power
Connected via standard 110 punch-down connectors
Diagnostics:
Status LED per pair: indicates Power to the BRX and Error Condition (if any)
The following block diagram (figure 2) highlights the inside of the BRX Power Injector:
Figure 2: Inside the BRX Power Injector
The power source of the BRX Power Injector can either be a local -48Vdc source, a local 110-220Vac
or express power pairs. A single express power pair is sufficient to power 24 pairs with BRX devices.
Support for a second express power pair is included whenever redundancy is required. When using a
local AC input, the BRX Power Injector is factory installed with a 110-220VAC to -48VDC power
supply. When using express pairs, the BRX Power Injector is factory installed with a down converter
module (±190Vdc to -48Vdc) from either Alpha Technologies or from GE Lineage. Note: You need to
make sure to use the same brand of up converter (-48Vdc to ±190Vdc) and down converter for full

BRX Power Injector Installation Guide 7 180-0192-001-R01
compatibility.
The BRX Power Injector delivers a -48Vdc (0.5w) sealing current for each pair where a BRX
amplification device is installed. Looking at figure 2, there are three (3) 8-pair power modules
installed. The output of these power modules connects to the pairs from the POTS port of the DSLAM
via a standard 110 punch down block (top left section of the picture. It is possible to connect two (2)
24-pair cables from the DSLAM. The opening allow for up to two cables for a total of 24 pairs
powered from the BRX Power Injector and the remaining pairs passed through untouched.
The BRX Power Injector typically connects to the DSLAM POTS port(s) via a nearby cross-connect
box. Its flexible design also supports a direct connection to the DSLAM. It is also possible to use the
BRX Power Injector as a basic cross-connect when having to combine POTS and BRX Power pairs
on the same cable binder(s) and in the absence of a cross-connect.
2.1 Connecting the BRX Power Injector to the DSLAM via a cross-connect
When connecting the BRX Power Injector via an existing cross-connect, a single 24-pair cable
connects to the BRX Power Injector since the cross-connect will then connect to the pairs that need
the -48Vdc sealing current into the DSLAM.
Figure 3: Connecting the BRX Power Injector to the DSLAM via a cross-connect
2.2 Connecting the BRX Power Injector Directly to the DSLAM
It is possible to connect the BRX Power Injector directly to the DSLAM where there is no cross-
connect at the location. In this case, it is important to assign the power to those pairs where a BRX
device is present. You will also need to make sure you select the proper cable binder matching each
amplified DSL pairs.

BRX Power Injector Installation Guide 8 180-0192-001-R01
Figure 4: Connecting the BRX Power Injector directly to the DSLAM
2.3 Combining POTS pairs with BRX Power Injector pairs directly to the DSLAM
While it is preferable to use an available cross-connect the BRX Power Injector includes a simple
cross-connect made up of 24 input pairs and 24 output pairs accessible via punch-down blocks.
POTS pairs in input to the BRX Power Injector shall be punched into the bypass section. The output
blocks of the bypass section allow you to mix POTS and BRX Power pairs into their respective binder
cable that connect to the POTS ports of the DSLAM.
Figure 5: Using the BRX Power Injector to combine POTS and BRX Power pairs
Important Note: the BRX Power Injector supports a maximum of 24 POTS pairs as input to the
bypass section. An external cross connect device shall be used when there are more than 24 POTS
pairs to combine with the BRX Power pairs.

BRX Power Injector Installation Guide 9 180-0192-001-R01
3 Quick Installation: Step-by-step Instructions
This section provides a detailed procedure to connect the power source to the BRX Power Injector.
You will also find a procedure to connect POTS pairs directly to the BRX Power Injector in the
absence of a nearby cross-connect. Finally, you will find a procedure to connect the BRX Power pairs
to the cable binder(s) connecting to the POTS port of the nearby DSLAM.
3.1 Connecting the Power Source
The BRX Power Injector offers a choice of three (3) power source:
Power Source
BRX Power Injector Ordering Codes
Local -48Vdc
BRX-PWR-8: 8-pair BRX Power Injector with local -48Vdc input
BRX-PWR-16: 16-pair BRX Power Injector with local -48Vdc input
BRX-PWR-24: 24-pair BRX Power Injector with local -48Vdc input
Local 110-220Vac
BRX-PWR-8-AC: 8-pair BRX Power Injector with local 110-220Vac input
BRX-PWR-16-AC: 16-pair BRX Power Injector with local 110-220Vac input
BRX-PWR-24-AC: 24-pair BRX Power Injector with local 110-220Vac input
Express Pairs
(RFT-V ±190V)
BRX-PWR-8-A: 8-pair BRX Power Injector with ALPHA Express Power input
BRX-PWR-16-A: 16-pair BRX Power Injector with ALPHA Express Power input
BRX-PWR-24-A: 24-pair BRX Power Injector with ALPHA Express Power input
BRX-PWR-8-G: 8-pair BRX Power Injector with GE Express Power input
BRX-PWR-16-G: 16-pair BRX Power Injector with GE Express Power input
BRX-PWR-24-G: 24-pair BRX Power Injector with GE Express Power input
N/A
BRX-PWR-M: 8-pair BRX Power Module to increase the pair capacity to a
maximum of 24 pairs (3 x BRX-XLR-M)
Table 1: BRX Power Injector Powering Options and Ordering Codes

BRX Power Injector Installation Guide 10 180-0192-001-R01
3.1.1 Local -48Vdc Source
The BRX Power Injector gets its power from a local -48Vdc source. It operates from a single -48Vdc
power source and supports a second (2nd) power feed for redundancy.
Using the leftmost opening, slice open the
rubber grommet and insert one or two DC
Power cable. Be careful when cutting an
opening in the rubber grommet since you will
need to apply a silicon sealant in step 2.
NOTE: you can refer to steps 7 to 12 for the
installation of the AC Power Cable option for
more details about inserting the cable through
the rubber grommet.
Connect the black wire(s) to the screw-in
terminal post(s) labeled as -48Vdc.
Connect the red wire(s) to the screw-in terminal
post(s) labeled as Return.
Table 2: Connecting a local -48Vdc power source to the BRX Power Injector