Positron GAM-PWR-4-M User manual

G.hn Access Multiplexer (GAM)
Quick Installation Guide
GAM-PWR-4-M

GAM Quick Installation Guide
Positron Access Solutions 2 Document 180-0216-001 R01
Publication Information
©2021 Positron Access Solutions
GAM (G.hn Access Multiplexer)
Quick Installation Guide
Publication date: July 2021
Printed in Canada
Published By
Positron Access Solutions
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 companies.
Disclaimer Notice
Although Positron Access Solutions has made every effort to ensure the accuracy of the information
contained herein, this document is subject to change.

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CONTENTS
Chapter 1.........................................................................................................................................4
About the GAM...............................................................................................................................4
1.1 Introduction........................................................................................................................5
1.2 GAM-PWR-4-M.................................................................................................................6
Chapter 2.........................................................................................................................................8
Installation and Troubleshooting .................................................................................................8
2.1 Installation Steps...............................................................................................................9
2.2 Troubleshooting.................................................................................................................9
Chapter 3.......................................................................................................................................10
Technical Specifications .............................................................................................................10
3.1 GAM Technical Specifications ........................................................................................11
Chapter 4.......................................................................................................................................12
Safety and Warnings....................................................................................................................12
Chapter 5.......................................................................................................................................15
Warranty and Customer Service ................................................................................................15
List of Figures
FIGURE 1:GAM CONNECTORS............................................................................................................................6
FIGURE 2:G.HN MIMO PAIR PINOUT FROM “INDOOR”GAM TO GAM-PWR-4-M......................................................7
FIGURE 3:G.HN MIMO PAIR (WITH RPF) PINOUT FROM GAM-PWR-4-M TO GAM-4-MRX/GAM-8-MRX...............7

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Chapter 1
______________________________________
About the GAM

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1.1 Introduction
The GAM is a Fiber to the Distribution Point (FTTDp) solution typically installed inside a
wiring closet. Each GAM comes with two (2) 10 Gigabit SFP+ interfaces to support any
type of fiber or PON standards (using an SFP-based or external ONT as required that is
compatible with the OLT). These SFP+ ports can further support additional GAM devices
in medium to large MDUs and share the fiber backhaul link.
The ITU-T G.9960 G.hn Wave-2 standard leverages the existing telephone wiring (UTP,
CAT-3 or CAT-5/5e) or RG-6/RG-59 coax cabling to deliver a Gigabit Internet service to
each subscriber without the cost, complexity and delays associated with in-building fiber
installation. G.hn is an Access technology for Operators looking to simplify their access
network and backend infrastructure with an Ethernet-like technology that is highly scalable
without some of the inherent complexity of DSL-related technologies. With G.hn,
Operators deliver advanced services such asGigabit High Speed Residential Internet and
4K IPTV without the high capital and operational expenses associated with a fiber retrofit.
Each G.hn subscriber port supports up to 1.7 Gbps of dynamically allocated bandwidth for
near symmetrical Gigabit services over the existing telephone wire or coaxial cable. The
Positron GAM solution is MEF CE 2.0 compliant and is ideally suited to deliver Business
Ethernet services in an MDU and/or MTU deployment.
Note: Read Chapter 4 Safety and Warnings before proceeding.

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1.2 GAM-PWR-4-M
The GAM-PWR-4-M allows a mid-span power injector to be used to inject 15.4W on top
of a G.hn data pair when connecting a Positron GAM (MIMO) to an outdoor and Reverse
Power Fed GAM-8-MRX (or GAM-4-MRX). You will need two (2) GAM-PWR-4-M devices
when applying power to all (16) pairs of a GAM-8-MRX.
Figure 1: GAM Connectors
LED
MEANING
PORT
ON: Power is ON / Active
Blinking: Overload or Short Circuit condition
MAIN
ON: Main Power is OK
OFF: No power or low voltage
IMPORTANT NOTE: The GAM-PWR-4-M is an indoor device and does not have built-
in primary lightning protection. You must install Gas Tube Discharge (GTD) devices
on each G.hn pair. The GTD shall support the frequency range of 2-200 MHz used
by G.hn such as the Bournes 2420 5-pin protector (low capacitance) or equivalent.
The GAM-PWR-4-M injects power on the G.hn pairs (MIMO) to remotely power the G.hn
pairs of a GAM-4-MRX or GAM-8-MRX. The GAM-PWR-4-M can only be used with G.hn
MIMO (2 pairs) where the inner pair (pin 4 & 5) carry a Positive DC current, and the outer
pair (pin 3 & 6) carry a Negative DC current.
The GAM-PWR-4-M requires a custom cable to inject the DC current properly. Looking
at the diagram below, pair 1 (pin 4 & 5) connect to pin 4-5 of the BRW-PWR-4-M injector
from the GAM while pair 2 (pin 3 & 6) need to connect to pin 7-8 of the BRX-PWR-4-M.
G.hn + Power
G.hn

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Figure 2: G.hn MIMO pair pinout from “indoor” GAM to GAM-PWR-4-M
The same wiring applies on the output of the GAM-PWR-4-M toward the RPF powered
GAM-4-MRX or GAM-8-MRX as per the following diagram.
Figure 3: G.hn MIMO pair (with RPF) pinout from GAM-PWR-4-M to GAM-4-MRX / GAM-8-MRX

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Chapter 2
______________________________________
Installation and Troubleshooting

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2.1 Installation Steps
1. Connect the GAM-PWR-4-M to an AC outlet (100-240VAC / 50-60 Hz)
2. Connect the DATA IN jack to the G.hn MIMO ports of the indoor GAM (as per Figure 1)
that are to be used as part of a LAG group toward an outdoor RPF powered GAM-4-MRX
or GAM-8-MRX.
3. Connect the DATA & POWER jack toward the outdoor GAM-4-MRX or GAM-8-MRX as
per the wiring diagram of Figure 2.
4. Make sure to notblock the airflow tothe GAM-PWR-4-M and install it awayfrom excessive
heat or humidity and free from vibration or dust.
IMPORTANT NOTE: You must install Gas Tube Discharge (GTD) devices on each
G.hn pair.
2.2 Troubleshooting
The operation of the GAM-PWR-4-M is simple and does not require any configuration.
The following table provide troubleshooting tips should you encounter problems.
Symptom
Corrective Steps
GAM-PWR-4-M
does not power up
1. Verify that a reliable AC power cord is used.
2. Verify the input voltage is between 100 and 240 VAC.
3. Remove and re-apply power to the unit and check the LED
indicators during the power up sequence.
The GAM-4-MRX or
GAM-8-MRX does
not power on
1. Verify the GAM-PWR-4-M detects the remote GAM device.
2. Verify the G.hn pairs are properly connected as per the
cabling diagram in this document. Use the same cabling
wiring to connect the G.hn MIMO port(s) of the indoor GAM
used for the LAG group to a DATA IN port of the GAM-PWR-
4-M. The same cabling diagram applies to the output of the
GAM-PWR-4-M toward the GAM-4-MRX or GAM-8-MRX,
connect the DATA & POWER OUT port toward the copper
pairs toward the remote GAM-4-MRX or GAM-8-MRX.
3. Verify there is no short fault over the copper pairs in and
out of the GAM-PWR-4-M.
The GAM-4-MRX or
GAM-8-MRX
powers up but the
G.hn link is down
1. Verify the port indicator for the pair is continuously ON.
2. Verify the G.hn MIMO pairs are properly connected. Make
sure the cable used follows the wiring diagram in this
document.
3. Connect the non-working G.hn pair to another port of the
indoor GAM or to the GAM-PWR-4-M to determine whether
the port of the GAM-PWR-4-M is faulty.

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Chapter 3
______________________________________
Technical Specifications

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3.1 GAM Technical Specifications
The GAM-PWR-4-M adheres to the following specifications:
Environmental
Operating Temperature
0 to +40oC / 32 to 104oF
10-90% Humidity (not condensing)
Storage Temperature
-20 to +70oC / -4 to 158oF
10-90% Humidity (not condensing)
Electrical
Input Voltage
100-240VAC (50-60 Hz)
Maximum Input Current
1.6 Amp
Available Output Power
65 W maximum
Nominal Output
55 VDC
G.hn Interface
Input (G.hn in)
RJ45 (female)
Output (G.hn + power)
RJ45 (female) with DC Voltage: Pairs 4-5 (+), 7-8 (-)
Compliance
EMC
FCC Part 15 Class B, EN55022 Class B and EN55024
SAFETY
UL/cUL/CB Scheme per 60950-1

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Chapter 4
______________________________________
Safety and Warnings

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Safety and Warnings
To ensure your safety when servicing and installing this equipment, please take the
following precautions:
The GAM products accept 110-220Vacfor powering (50-60Hz). A properly fused 3-contact
(live-neutral-protective ground) power outlet wired in accordance to the National Electrical
Code shall be used to provide the power to the GAM unit.
A power cord meeting IEC 60320 (C13 type) is supplied with the GAM device and shall
be used to bring power to the GAM. The primary protective ground (earthing) is provided
through this cord.
The power cord must always be disconnected before servicing the accessible front panel
fuse to prevent from risk of electrical shock. Always use a replacement fuse of the proper
current rating.
Only qualified personnel should service this system.
All wiring external to the product should follow the local wiring codes.
Use of this product in a manner other than defined in this installation guide may cause
damage to equipment or injury to personnel.
If a problem has been isolated to this unit, do not attempt to repair. The unit’s components
are not user serviceable and therefore must not be replaced. Please return the unit to
Positron Access Solutions for repair.
Observe local practice electrostatic discharge precautions when handling electronic
equipment. Do not hold electronic plugs by their edge. Do not touch components or
circuitry. Use a grounding wrist strap attached to a grounding connection point. Use only
ESD-protective packaging materials when transporting equipment.
When installing in a closed or multi-unit rack environment, ensure that the maximum
operating ambient temperature of 45°C (113°F) is not exceeded.
Installation of the equipment in a rack should be such that the amount of airflow required
for safe operation of the equipment is available.
Connect the unit only to a properly rated supply circuit.

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During installation and service, do not connect to a live power source. Ensure that
fuses/breakers on the main power source are in the OFF/OPEN position or that power
cords are unplugged from the unit.
Mounting of equipment in a rack should be such that a hazardous condition is not achieved
due to uneven mechanical loading.
WARNING: The Electrical Ethernet –RJ-45 of the equipment are suitable for connection
to intra-building or unexposed wiring or cabling only. The intra-building ports of the
equipment MUST NOT be metallically connected to interfaces which connect to the OSP
or its wiring unless adequate primary and secondary level protections are installed (indoor-
outdoor transition protectors).
THIS PRODUCT IS SUITABLE FOR MOUNTING ON OR ABOVE CONCRETE OR
OTHER NON-CONDUCTIVE SURFACE ONLY.

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Chapter 5
______________________________________
Warranty and Customer Service

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Positron Access Solutions 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 in your Positron Access customer web portal:
http://www.positronaccess.com/Portal.php
Positron Access Solutions Sales Pricing/Availability and Technical Support
US and Canada: 1-888-577-5254
International: [phone]
[e-mail]
Repair and Return Address
Contact Customer Service prior to returning equipment to Positron.
Telephone US and Canada: 1-888-577-5254 option 6
International: [phone] option 6