Magnum 14E Fast Ethernet
Media Converters
(Including SC, ST and MTRJ ports, full/half duplex, mm and sgl. mode, standard Link Pass-through)
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Magnum14E Media Converters Installation and User Guide(10/02)
Magnum 14E Media Converters
Installation and User Guide
Part #: 84-00065 Rev E
Trademarks
Ethernet is a trademark of Xerox Corporation
NEBS is a trademark of Telcordia Technologies
UL is a registered trademark of Underwriters Laboratories
GarrettCom, Magnum and Personal Switch are trademarks and Personal Hub is a
registered trademark of GarrettCom, Inc.
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Magnum14E Media Converters Installation and User Guide(10/02)
Important: The Magnum 14E Media Converters contains no user serviceable
parts. Attempted service by unauthorized personnel shall render all warranties
null and void. If problems are experienced with Magnum 14E Media
Converters, consult Section 5, Troubleshooting, of this User Guide.
Copyright 2001 GarrettCom, Inc. All rights reserved. No part
of this publication may be reproduced without prior written permission from
GarrettCom, Inc.
Printed in the United States of America.
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Magnum14E Media Converters Installation and User Guide(10/02)
Contacting GarrettCom, Inc
Please use the mailing address, phone and fax numbers and email address listed below:
GarrettCom, Inc.
47823 Westinghouse Drive
Fremont, CA 94539
Phone (510) 438-9071
Fax (510) 438-9072
Website: http://www.GarrettCom.com
email support@garrettcom.com
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Magnum14E Media Converters Installation and User Guide(10/02)
Federal Communications Commission
Radio Frequency Interference Statement
This equipment generates, uses and can radiate frequency energy and if not
installed and used properly, that is in strict accordance with the manufacturer's
instructions, may cause interference to radio communication. It has been tested and
found to comply with the limits for a Class A computing device in accordance with the
specifications in Subpart J of Part 15 of FCC rules, which are designed to provide
reasonable protection against such interference when operated in a commercial
environment. Operation of this equipment in a residential area is likely to cause
interference, in which case the user at his own expense will be required to take whatever
measures may be required to correct the interference.
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Magnum14E Media Converters Installation and User Guide(10/02)
TABLE OF CONTENTS Page
1.0 SPECIFICATIONS.................................................................................... 1
1.1. Technical Specifications................................................................................ 1
1.2 Ordering Information ..................................................................................... 6
2.0 INTRODUCTION ..................................................................................... 7
2.1 Inspecting the Package and Product ............................................................... 7
2.2 Product Description........................................................................................ 9
2.3 Features and Benefits ................................................................................... 14
2.4 Applications ................................................................................................. 16
3.0 INSTALLATION .................................................................................... 20
3.1 Locating the Media Converter Unit.............................................................. 20
3.2 MC14-TRAY for Rack mounting the Magnum 14E .................................... 21
3.3 MC14-TR+PS9 & MC14-TR+PS9X2 19” Rack-mount w/ Power Supply . 23
3.4 Calculating Overall Segment Distances ...................................................... 25
3.4.1 Power budget calculation for fiber media........................................ 25
3.4.2 Segment Distance, full-duplex copper (RJ-45) and fiber................. 27
3.4.3 Segment Distances for half-duplex mode ........................................ 32
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Magnum14E Media Converters Installation and User Guide(10/02)
TABLE OF CONTENTS (CONTINUED) ...................................... Page
3.4.4 Collision Domain (PDV Calculations) ........................................... 32
3.5 Connecting Fast Ethernet Media ............................................................... 40
3.5.1 Connecting Twisted Pair (RJ-45 Standard) ...................................... 40
3.5.2 Connecting Fiber-FX (SC-type “Snap-In”, and ST, "Twist-Lock") ............. 41
3.5.3 Connecting Fiber-FX (MT-RJ-type Small Form Factor “Snap-In”)............. 43
4.0 OPERATION........................................................................................... 44
4.1 Power Requirements, Power Supply Types.................................................. 44
4.2 Dual LEDs (Front and Side) Indicators........................................................ 45
4.3 Up-Link Switch on TX port ......................................................................... 46
4.4 Manual AN/reg (auto-negotiate support, or regular operation) Switch ........ 47
4.5 Standard Link Pass-through feature in all Magnum 14E Models ................ 50
5.0 TROUBLESHOOTING........................................................................... 52
5.1 Before Calling for Assistance....................................................................... 53
5.2 When Calling for Assistance........................................................................ 54
5.3 Return Material Authorization (RMA) Procedure........................................ 55
5.4 Shipping and Packaging Information ........................................................... 57
APPENDIX A: WARRANTY INFORMATION .................................................. 58
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Magnum14E Media Converters Installation and User Guide(10/02)
Revisions
Rev E 10/02 : Link-Pass-through feature updated in this revision.
Rev D 09/01 : MC14-TR+PS9 and MC14-TR+PS9X2, 19” Rack-mount with
Power Supply added in this revision.
Rev C 04/01 : Change the company name to GarrettCom, Inc. (Formerly it
was Garrett Communications). There are no changes to the content of the
material at this time.
Rev B 09/00 : Manual AN/reg (auto-negotiate support, or regular operation)
Switch information added.
Rev A 05/00 : This revision is the initial release of the 14E media Converters
user manual.
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Magnum14E Media Converters Installation and User Guide (10/02)
1.0 SPECIFICATIONS
1.1. Technical Specifications
Performance:
Data Rate: 100 Mb/s
Half- or Full-Duplex transparent, F/H auto-negotiation supported
200ns (20 bit-times) Path Delay Value (PDV) for conversion delay
Network Standards:
Fast Ethernet IEEE 802.3u: 100BASE-TX, 100BASE-FX
Operating Environment:
Ambient Temperature: 32ºF to 120ºF (0ºC to 50ºC)
Storage Temperature: -20ºC to 60ºC
Ambient Relative Humidity: 10% to 95% (non-condensing)
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Magnum14E Media Converters Installation and User Guide (10/02)
Maximum Standard Fast Ethernet Segment Lengths:
100BASE-TX (twisted pair): 100 m (328 ft)
100BASE-FX Fiber optic, half-duplex: (multi-mode) 412 m (1350 ft)
100BASE-FX Fiber optic, full duplex: (multi-mode) 2.0 km (6,562 ft)
100BASE-FX Fiber optic, half-duplex: (single-mode) 412 m (1350 ft)
100BASE-FX Fiber optic, full duplex: (single-mode) 25 km (66k ft)
100BASE-FX Long Reach: Fiber optic, full duplex: (single -mode) 40 km (132k ft)
Note: Magnum 14E Media Converters DO NOT support full length
shared Fast Ethernet segments. See Section 3.2 of this manual for
media lengths and shared segment distance calculations.
Power Supply (External):
Power Input: 95 - 125 vac at 60 Hz for "-d" Models,
100 - 240 vac at 50 Hz for "-i" Models which have
IEC power cable connector.
Power Consumption: 4 watts typical
Power Adapter: 9VDC, 1.0 Amps; center positive
Note: Optional –48vdc and 24vdc external power units are available
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Magnum14E Media Converters Installation and User Guide (10/02)
Connectors:
RJ-45 Port: 8-Pin female, with “cross-over” up-link switch
Note: The AN/reg manual switch is for user-selected auto-negotiation support,
or for regular operation. See Section 4.4
Fiber, multi-mode (up to 2Km) :
SC-type (snap-in): Fiber optic multi-mode, 100BASE-FX
ST-type (twist-lock): Fiber optic multi-mode, 100BASE-FX
MT-RJ-type, Small Form Factor (plug in): Multi-mode, 100BASE-FX
Fiber, single-mode (25-Km and up):
SC-type (snap-in): Fiber optic single-mode, 100BASE-FX, 25Km
SC-type (snap-in): “Long-Reach” single-mode, 100BASE-FX, 40Km
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Magnum14E Media Converters Installation and User Guide (10/02)
Packaging:
Enclosure: High strength sheet metal.
Dimensions: 3.5 in H x 3.0 in W x 1.0 in D (8.9 cm x 7.6 cm x 2.5 cm)
**Power Supply: 2.0 in x 2.0 in x 1.5 in (5.1 cm x 5.1 cm x 3.8 cm)
Weight: 4.6 oz. (130 gr); Power Supply 1.0 lb (455 gr)
LED Indicators for the Magnum 14E (Dual, on front and on end) :
PWR Indicates unit is receiving DC power.
Note: Magnum 14E has Link Pass-through feature, see Section 4.5
LINK, Fiber port Steady ON when both attached cable segments are operational
at their respective other ends, blinking when receiving remote
fault from the other end.
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Magnum14E Media Converters Installation and User Guide (10/02)
LINK, Copper port Steady ON when the attached cable segments are
operational at their respective other ends
RX/ACT Activity, blinking indicates port is receiving
Agency Approvals:
UL Listed (UL 1950), cUL , CE Certified
Emissions: Meets FCC Part 15 Class B, cUL, CE
Warranty: Three years, return to factory Made in USA
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Magnum14E Media Converters Installation and User Guide (10/02)
1.2 Ordering Information
Model Number Description
Magnum 14E-SC-d Twisted pair to mm fiber SC, ext. 115 vac, 60Hz power supply
Magnum 14E-SC-i Twisted pair to mm fiber SC, ext. 230 vac, 50Hz power supply
Magnum 14E-ST-d Twisted pair to mm fiber ST, ext. 115 vac, 60Hz power supply
Magnum 14E-ST-i Twisted pair to mm fiber ST, ext. 230 vac, 50Hz power supply
Magnum 14E-MT-RJ-d Twisted pair to fiber MT-RJ small form factor, ext. 115 vac, 60 Hz PS
Magnum 14E-MT-RJ-i Same as Magnum 14E-MT-RJ, but with ext.230 vac, 50 Hz PS
Magnum 14E-SSC-d Twisted pair to fiber SC, single-mode std 25Km, ext. 230vac, 50 Hz PS
Magnum 14E-SSC-I Same as Magnum 14E-SSC, but with ext 230vac, 50 Hz PS
Magnum 14E-SSCL-d Twisted pair to fiber ST, single mode 40km “Long Reach”, external 115vac, 60
Magnum 14E-SSCL-i Same as Magnum 14E-SSCl, but with ext 230vac, 50 Hz PS
MC14-TR+ PS9 = 19” Rack-mount tray , support upto 10 units of 100Mbps 14E Fiber Media Converters,Uses 2U
rack space, has space for a few external PS units (which are part of the MC’s)
MC14-TR+PS9X2 = Powered 19” Rack-mount tray for 100Mb, 14E (and 10Mbps, TF14 mix and match) Media
Converters, up to 16 units @ 9vdcs. Uses 2U rack space. Includes common multi-unit Power Supply for universal
AC input, 55 watts at 9vdc, and power cabling for the MC’s
GarrettCom, Inc. reserves the right to change specifications, performance
characteristics and/or model offerings without notice.
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Hz Power Supply
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Magnum14E Media Converters Installation and User Guide (10/02)
2.0 INTRODUCTION
This section describes the Magnum 14E Fast Ethernet Media Converters, including
appearance, features and possible applications.
2.1 Inspecting the Package and Product
Examine the shipping container for obvious damage prior to installing this product;
notify the carrier of any damage which you believe occurred during shipment or delivery.
Inspect the contents of this package for any signs of damage and ensure that the items listed
below are included.
This package should contain:
1 Magnum 14E Media Converter unit
1 External Power Supply, either 115 vac 60 Hz or 230 vac 50 Hz
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Magnum14E Media Converters Installation and User Guide (10/02)
1 Set of two (2) metal mounting clips, with screws
1 Velcro Tape section, approximately 3 inches in length
1 User Guide (this manual) and Product Registration Card
Remove the Magnum 14E Media Converter from the shipping container. Be sure to
keep the shipping container should you need to store or to ship the unit at a later date. To
validate the product warranty, please complete and return the enclosed Product Registration
Card to GarrettCom, Inc. within two weeks of purchase.
In the event there are items missing or damaged, contact your supplier. If you need
to return the unit, use the original shipping container. Refer to Section 5, Troubleshooting, for
specific return procedures.
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Magnum14E Media Converters Installation and User Guide (10/02)
2.2 Product Description
Magnum 14E Fast Ethernet Media Converters offer a convenient, cost-effective and
graceful way to incorporate fiber media into a 100BASE-TX Ethernet network. Each Magnum
14E supports both full- and half-duplex mode transparently so that an attached RJ-45 switch or
hub operates at its highest performance level. For support of “N-way” auto-negotiating
switches, a manual AN/reg switch on the Magnum 14E allows the user to manually enable
either (a) “AN” for auto-negotiation, where the 14E transmits applicable auto-negotiation Fast
Link Pulses (FLPs) from the RJ-45 port to the connected 10/100 switch port at Link-enable, or
(b) “reg” regular media converter mode, no auto-negotiation.
Magnum 14E Media Converters are designed for quick and easy installation even in
very tight spaces. Media cables are easily attached. Magnum 14E Media Converters feature an
up-link switch on the TX port to eliminate the need for a special cross-over cable when
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Magnum14E Media Converters Installation and User Guide (10/02)
connecting the TX port to a switch or hub. Because of their compact size, Magnum Media
Converters can be Velcro®-mounted on an office wall or the side of a desk or cabinet. The
external power supply, 115vac 60Hz or 230vac 50Hz, plugs into a nearby AC wall socket or
power strip. Each 14E Media-Converter features a two full sets (front and side) of LEDs that
convey essential status information in any mounting arrangement. See Section 4.1, LED
Indicators, for LED function information.
Magnum 14E Media Converters are designed to operate at high ambient temperatures
over an extended period, making them some of the most reliable in the industry. Their high-
strength fabricated metal packaging shields against Radio Frequency Interference (RFI) and
Electromagnetic Interference (EMI), avoiding interference with other nearby electronic
devices.
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Magnum14E Media Converters Installation and User Guide (10/02)
The Magnum 14E units comply with the IEEE 802.3u (100BASE-TX and 100BASE-
FX) specification for 100 Mb/sec traffic via shielded (STP) or unshielded twisted pair (UTP)
segments.
RX\ACT
Link
Pwr
Link
The Link Pass-Through feature is especially
desirable for use in managed networks, and is
RX/ACT
TWISTED PAIR
Magnum 14E
Media Converter
FIBER
standard in all 14E’s. Magnum 14E-ST models
are equipped with one multi-mode fiber-ST and
one RJ-45 connector for connection into
9VDC .3AMP
100BASE-FX segments.
14Es with ST integrates 100BASE-TX and FX networks, with fiber ST connector
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Twisted Pair
(100BASE-TX)
Fiber Multi-mode
(100BASE-FX)
(ST-type)
Magnum14E Media Converters Installation and User Guide (10/02)
The Magnum 14E-SC comes in three models, with three different fiber transceivers.
Models are 14E-SC (multi-mode, 2Km), 14E-SSC (single-mode, 25Km) or 14E-SSCL (single-
mode Long Reach, 40Km) are
equipped with one fiber SC-type
port and one RJ-45 port for
connection into 100BASE-FX
and 100BASE-TX compliant
Fast Ethernet network segments.
14Es with SC integrate 100BASE-TX and FX networks, with fiber SC connectors.
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9VDC .3AMP
Link
RX/ACT
TWISTED PAIR
Magnum 14E
Media Converter
RX\ACT
Link
Pwr
FIBER
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Twisted Pair
(100BASE-TX)
Fiber
Multi- or Single mode
(100BASE-FX)
(SC-type)
Magnum14E Media Converters Installation and User Guide (10/02)
The Magnum 14E-MTRJ (SFF, small form factor) comes with multi-mode fiber
transceivers. The Model 14E-MTRJ (multi-mode, 2Km), equipped with one fiber MTRJ-type
port and one RJ-45 port, connects into 100BASE-FX and 100BASE-TX compliant Fast
Ethernet network segments. The
SFF MT-RJ connector is keyed so
that it can only be connected when
the two fiber strands are correctly
positioned for transmit and
receive. See Section 3.4.3.
RX/ACT
FIBER
TWISTED PAIR
Magnum 14E
Media Converter
9VDC .3AMP
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/
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TX
RX\ACT
Link
Pwr
Link
14Es with SC integrate 100BASE-TX and FX networks, with fiber MT-RJ connectors.
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Twisted Pair
(100BASE-TX)
Multi- mode
(100BASE-FX)
(MTRJ-type)
Magnum14E Media Converters Installation and User Guide (10/02)
2.3 Features and Benefits
! Reduces Network Costs
Magnum 14E Media Converters offer an ideal solution to quickly and
inexpensively connect Twisted-Pair TX with Fiber FX cabling.
! Full-duplex or Half-duplex transparent, auto-negotiation support
Magnum 14E’s support both full-duplex and half-duplex mode transparently,
and are suited for use with 100Mb Ethernet switches supporting (or not
supporting) auto-negotiation.
! Low PDV for Maximum Cable Lengths in Shared Segments
Magnum 14E Media Converters add signal timing delays of only 20 Bit Times
in a shared half-duplex segment, much less than a Class II (90 to 95 BT ), and
can be used to attach fiber cables to TX ports with low distance loss in an
overall HDX collision domain.
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Magnum14E Media Converters Installation and User Guide (10/02)
! Small, Compact, Lightweight Design
Featuring a compact and lightweight metal case with an external power supply,
Magnum 14E Media Converters can be conveniently installed in minimal space.
The MC14-TRAY provides optional rack-mounting.
! Two sets of LEDs for viewing status from any angle.
Each 14E Media Converter is equipped with a two sets (front & side) of LEDs
to provide status information when viewed at any angle or mounting
arrangement, rack-mount Tray or wall-mount.
! Choice of 100Mb Ethernet Fiber port connector types
Models of the Magnum 14E’s are available with all of the popular fiber
connectors: ST, SC mm and sgl-mode, and MT-RJ SFF (small form-factor).
! Link Pass-through is standard This feature, desired mainly in
managednetworks, is standard in all Magnum 14E’s.
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Magnum14E Media Converters Installation and User Guide (10/02)
2.4 Applications
The primary function of a Magnum 14E Media Converter is to permit two different
media types to coexist within the same network by allowing data to be transmitted / received
between different media types. Magnum 14E media converters provides an effective solution for
a network environment where auto-negotiation is a primary concern for the attached devices.
They also support 100Mb half duplex or full duplex mode, transparent. Because of its auto-
negotiation feature, the Magnum 14E supports an attached “N-way” auto-negotiating RJ-45
switch or hub port, allowing it to operate at its highest performance level, i.e., full-duplex
100Mb/s.
Magnum 14Es are typically used where new 10/100Mb switches or switching hubs with
auto-negotiating RJ-45 ports are being installed, and where full-duplex fiber segments (of up to
2Km for multi-mode or 25Km to 40Km for single mode) are needed
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Magnum14E Media Converters Installation and User Guide (10/02)
to interconnect them with other 100Mb switches or switching hubs in distant wiring closets.
Alternatively, a server with a full-duplex NIC may need to be connected via fiber to a 100Mb
switches or switching hubs with RJ-45 ports.
1 2 3 4 5 6 7 8 9 10 11 12
1 2 3 4 5 6 7 8 9 10 11 12
13 14 15 16 17 18 19 20 21 22 23 24
13 14 15 16 17 18 19 20 21 22 23 24
Magnm14E
100 BASE-TX
wiring segment
Link
Pwr
Link
RX/ACT
FIBER
TWISTED PAIR
Magnum 14E
UP LINK
Media Converter
9VDC .3AMP
RX\ACT
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100 BASE-FX
wiring segment
wiring segment
A
Link
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UP LINK
k
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/
UP LINK
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RX
TX
100 BASE-TX
Pwr
Link
RX/ACT
Magnum 14E
Two Magnum 14E’s provide connectivity for 100Mbps switches or hubs via fiber
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Magnum14E Media Converters Installation and User Guide (10/02)
In these and similar situations, the Magnum 14E conveniently converts the twisted
pair cable to fiber, allowing use of any available RJ-45 Fast Ethernet switched port with a new
or existing fiber cable. See Section 3.2.1 for cable distance calculation information.
Where shared Fast Ethernet segments are used, such as with Fast Ethernet switches or
switching hubs with RJ-45 ports, it may be desirable to connect one or more servers or users
via fiber cable. Because of its manual AN/reg switch feature, the Magnum 14E supports both
“Auto-negotiation” and “reg” regular mode at the attached RJ-45 port, allowing flexibility with
the unit attached. See Section 3.4.3 for details on auto-negotiation support.
It is necessary to calculate the PDV of the overall collision domain (see Section
3.2.2) for proper operation of the Magnum 14E in HDX applications.
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Magnum14E Media Converters Installation and User Guide (10/02)
Magnum
Link
RX/ACT
TWISTED PAIR
Magnum 14E
Media Converter
9VDC .3AMP
14E-ST
RX\ACT
Link
Pwr
FIBER
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UP LINK
/
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RX
TX
1 2 3 4 5 6 7 8 9 10 11 1 2
13 14 15 16 17 18 19 20 21 22 23 24
1 2 3 4 5 6 7 8 9 10 11 1 2
13 14 15 16 17 18 19 20 21 22 23 24
1 2 3 4 5 6 7 8 9 10 11 1 2
13 14 15 16 17 18 19 20 21 22 23 24
100 BASE-TX
wiring segment
Fiber
(100BASE-FX)
wiring segment
A typical Magnum 14E application is to convert copper media to fiber, with auto-
negotiation support for the attached device on the copper port.
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Magnum14E Media Converters Installation and User Guide (10/02)
3.0 INSTALLATION
This section describes the installation of the Magnum 14E Media Converters,
including location, segment distance calculation and media connection.
3.1 Locating the Media Converter Unit
The compact and lightweight design of the Magnum 14E Media Converter allows it
to be easily installed in most any location. A
Velcro strip and a set of two metal clips and
screws are included (either may be used) for
mounting the unit on a vertical surface such as a
wall or cabinet, or for securing the unit on a
table-top or shelf. The installation location is
dependent upon the physical layout of the
Ethernet network and associated cabling. Make
sure the unit is installed in a location that is easily
accessible to an AC power outlet or power strip, and where convection cooling is not inhibited.
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Proper attachment of metal
mounting clips for secure mounting
Magnum14E Media Converters Installation and User Guide (10/02)
3.2 MC14-TRAY for Rack Mounting of Magnum 14E Media Converters
For 19” rack-mounting of Magnum 14E Media Converter, a rack-mount tray is available,
MC14-TRAY. The Media Converter units are mounted with their DC power jack in the back,
and with the RJ-45 and the fiber ports in front. Any mix of the “14”-series 10Mb Media
Converters and 14Es may be placed on a tray, up to a maximum
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Magnum14E Media Converters Installation and User Guide (10/02)
of 16 units. (The mounting spaces of the MC14-TRAY are specific to the 10Mb “14”-series
and the 14E, and do not permit other models or other sizes to be put in the tray).
A typical installation of the model MC14-TRAY, 19” rack-mount tray will hold a
few (often three to eight) 14E Media Converters, each with their power supply plugged into
power strips (not included) in the rear area of the tray. Metal mounting screws in the bottom-
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Magnum14E Media Converters Installation and User Guide (10/02)
front hold the media converters firmly in place in the tray.
3.3 MC14-TR+PS9 & MC14-TR+PS9X2 for Rack Mounting 100Mbps Crossover
Media Converters
The MC14-TR+ PS9 and MC14-TR+PS9X2 are another option available for Rack
Mounting the mix-match of 10Mbps and 100Mbps Media Converters together in 19” rack-
mount tray. These models comes with built-in common universal AC power supply rated at 55
watts at 50C ambient, 9VDC output, and supporting up to 10 MC for MC14-TR+PS9 and 16
units of Fiber media converters for MC14-TR+PS9X2. The MC14-TR+PS9X2 Model has
two groups of eight units per power supply. These models are equipped with Auto-ranging AC
input to the power supplies for use worldwide.
(The MC mounting spaces of the MC14 -TR models are specific to the Magnum
10Mbps (TF14) and 100MB (14E) series, and do not permit other models or other sizes to be
put in the tray).
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Magnum14E Media Converters Installation and User Guide (10/02)
The side-view picture shown here is
an example of an installation of the
model MC14-TR+PS9, 19” rack-
mount tray, holding a few 100Mbps
14E Media Converters, each with
their power input plugged into the
built-in common AC power supply in
the rear area of the tray. (PS units
that come with the MC’s are not
used).
Metal mounting screws in
the bottom-front hold each of the
media converters secure in the tray,
separately removable for service. The dual LEDs permit viewing operating status of the Media
Converters from any angle.
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Magnum14E Media Converters Installation and User Guide (10/02)
3.4 Calculating Segment Distances
The media distance considerations are quite different for full-duplex and for halfduplex (standard Fast Ethernet) installations. Each of these situations are covered below in a
separate section.
3.4.1 Power Budget Calculations for Fiber Media
Receiver Sensitivity and Transmitter Power are the parameters necessary to compute
the power budget. To calculate the power budget of different fiber media installations, the
following equations should be used:
OPB (Optical Power Budget) = PT(min) - PR(min)
where PT = Transmitter Output Power, and PR = Receiver Sensitivity
Worst case OPB = OPB - 1dB(for LED aging) - 1dB(for insertion loss)
Worst case distance = {Worst case OPB, in dB} / [Cable Loss, in dB/Km]
where the “Cable Loss” for 62.5/125 and 50/125µm (m.m.) is 2.8 dB/km,
and the “Cable Loss” for 100/140 (multi-mode) is 3.3 dB/km,
and the “Cable Loss” for 9/125 (single-mode) is 0.5 dB/km
The following data has been collected from component manufacturer’s (HP’s and Siemens’)
web sites and catalogs to provide guidance to network designers and installers.
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Magnum14E Media Converters Installation and User Guide (10/02)
,
Fiber
Port
Module
14E-
MST, MSC
14E-SSC
14E-MTRJ
Speed,
Std.
100Mb
FX
100Mb
FX
100Mb
FX
Mode
Multi-
mode
Single-
mode
Multi-
mode
Std. km
fdx
(hdx)
2
(0.4)
25
(0.4)
2
(0.4)
Wave-
Cable
X’mitr
R’cvr
Worst
length
nm
1300
Size
µm
62.5/125
50/125
Output
P
dB
T ,
-20
-23.5
Sens.
P
R
-31
-31
dB
OPB,
dB
9.0
5.5
Worst*
distance
Km, fdx
2.5
2.0
typical
OPB,
dB
14
12
1300 9/125 -15 -31 14 28 17.5 35
-20
-31
9.0
1300
62.5/125
-23.5
-31
5.5
2.5
2.0
14
12
50/125
14E-SSCL
Long Reach
100Mb
FX
Single-
mode
40
1300 9/125 -5 -34 27 54 32.5 65
(0.4)
* Note: The use of either multi-mode or single-mode fiber to operate at 100Mbps speed over
long distances (i.e., over approx. 400 meters) can be achieved
only if the following factors are
both applied:
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typical*
distance
Km, fdx
5
4
5
4
Magnum14E Media Converters Installation and User Guide (10/02)
• The 100Mb fiber segment must operate in full-duplex (FDX) mode, i.e. a switch (or
equal external unit such as a FDX NIC) must be used, and
• The worst-case OPB of the fiber link must be greater than the fiber cable’s passive
Attenuation.
(Attenuation = Cable loss + LED aging loss + Insertion loss + safety factor)
3.3.2 Segment Distances, Full-duplex for copper media (RJ-45) and fiber
Full-duplex ports, such as copper are found in switching hubs and some NICs, can
receive and transmit signals simultaneously and do not experience collisions accordingly.
There may be only two nodes present on a full-duplex segment. Media distance rules are not
the same as for standard (half-duplex) Fast Ethernet because collision distance limitations are
not a factor. Specifically, fiber segments can be up to 2Km for multi-mode and up to 25Km for
single mode (or 40Km for “Long Reach” single mode).
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Magnum14E Media Converters Installation and User Guide (10/02)
The Magnum 14E, with full-duplex operation as a standard feature, can be used in
these applications. When installing the Magnum 14E in a full-duplex segment, it is important
to consider the combined overall segment length of both of the attached media types. The
overall segment length is calculated by adding together the segment lengths on both sides of the
Magnum 14E Media Converters. The figure below illustrates how a Magnum Media Converter
is used to connect a multi-mode fiber (100BASE-FX) with a twisted pair (100BASE-T)
segment.
Segment length on each side of the 14E Media Converter is measured as a percentage
of the maximum allowable standard media distance for the given media type. The percentages,
when added together, must not exceed 100%.
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Magnum14E Media Converters Installation and User Guide (10/02)
Media Distance Formula for Magnum 14E, full-duplex:
X% + Y% < 100%
Where X = The segment distance on one side of the Magnum 14E
Media Converter divided by the Standard Maximum
Media Distance for that media type, x 100%
Where Y = The segment length on the other side of the Magnum 14E
Media Converter divided by the Standard Maximum
Media Distance for that media cabling type, x 100%
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Magnum14E Media Converters Installation and User Guide (10/02)
Connectivity between 100BASE-TX
and 100BASE-FX Ethernet Media.
In the example figure shown
RX/ACT
TWISTED PAIR
Media Converter
Pwr
Link
Magnum 14E
RX\ACT
Link
FIBER
UP LINK
above, the length of fiber Segment X is
1500m (4920 ft). This is 75% of the
maximum allowable distance for multi-
9VDC .3AMP
mode 100BASE-FX fiber full-duplex
media (2000 m) [75/2000 x 100% = 75%]. The length of twisted pair Segment Y is 10m (33
ft). This is 10% of the maximum allowable distance for 100BASE-TX full-duplex twisted-pair
media (100 m) [10/100 x 100% = 10%]. The total of the two percentages (75% + 10%) is 85%,
which is allowable.
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(100BASE-TX)
t
c
A
k
n
i
L
F
F
/
n
A
k
n
t
i
c
L
A
/
x
R
RX
TX
Fiber Multi-mode
(100BASE-FX)
(ST-type)
Twisted Pair
Magnum14E Media Converters Installation and User Guide (10/02)
Note 1: Where more than one media converter is used in one segment run,
the percentages for all of the cabling lengths in the run must be added
together and must not exceed 100%.
In another instance, a Magnum Media Converter is used to connect a single mode
fiber (100BASE-FX) with a twisted pair (100BASE-T) segment. In this example, the length of
fiber Segment X is 8500m (27,880 ft). This is 57% of the maximum allowable distance for
single mode 100BASE-FX fiber full-duplex media (15,000 m) [57/15,000 x 100% = 57%].
The length of twisted pair Segment Y is 12m (40 ft).
This is 12% of the maximum allowable distance for 100BASE-TX full-duplex twisted-pair
media (100 m) [12/100 x 100% = 12%]. The total of the two percentages (57% + 12%) is 69%,
which is allowable.
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Magnum14E Media Converters Installation and User Guide (10/02)
3.4.3 Segment Distances, Half-duplex mode
Fast Ethernet shared bandwidth devices operate with multiple nodes in a traffic
domain. When a node attempts to send a packet, it may hit another packet passing by, i.e., a
collision may occur. This is normal and does not cause a problem because the Ethernet
protocol provides for this situation and requires that the sender wait and try again. When
installing the Magnum 14E in a half-duplex segment, it is important to consider the collision
domain of the segment, including the 14E itself, repeaters and hubs present, and the lengths of
both of the attached media types.
3.4.4 Collision Domain (PDV Calculations)
A collision domain is defined in the IEEE 802.3u standard as a cluster of network
devices that, regardless of topology, must be less than 512 BT (Bit Times) of signal delay
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Magnum14E Media Converters Installation and User Guide (10/02)
(PDV or Path Delay Value) in diameter between any two nodes. Nodes in a collision domain
are connected by means of a repeater or repeaters such that no bridging or switching devices
are present between any two nodes in the cluster. A Magnum 14E has a PDV of about eighty
Bit Times (20 BT), and this value must be included in the overall collision domain diameter
PDV calculations as applicable for the placement of the 14E in the topology of the collision
domain.
Collision Domain Diameter
The Collision Domain Diameter is the length of the longest path between any two
devices in a single collision domain. Regardless of the actual network topology, the Collision
Domain Diameter must be less than 512 BT (Bit Times). Bit Times are related to media type
as shown in Table 3.2.2a.
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Magnum14E Media Converters Installation and User Guide (10/02)
Table 3.2.2a: Worst case round-trip delay for Fast Ethernet media*
Media Type Round-trip delay in Bit Time per Meter (BT/m)
Fiber Optic
Shielded TP cable
Category 5 Cable
Category 4 Cable
*Worst case delays taken from IEEE Std 802.3u-1995, actual delays may be less for a particular cable.
Contact your cable supplier for exact cable specifications.
Each shared Fast Ethernet network device also has an associated BT delay. Table
3.4b shows typical Fast Ethernet device components and the associated BT delay. Note that
there is only one DTE pair associated with any device-to-device path.
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1.000
1.112
1.112
1.140
Magnum14E Media Converters Installation and User Guide (10/02)
Table 3.4b: Worst case round-trip delay for Fast Ethernet device components*
Component Round-trip delay in Bit Times (BT)
2 TX DTEs
2 FX DTEs
1 FX and 1 TX DTE
1 T4 and 1 TX or FX DTE
Class I Repeater
Class II Repeater with any
combination of TX and FX ports
*Worst case delays taken from IEEE Std 802.3u-1995.
To determine whether a prospective network topology adheres to the collision
domain diameter specification, the following formula should be applied to the worst case path
through the network. The worst case path is the path between the two Fast Ethernet devices
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100
100
100
127
140
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Magnum14E Media Converters Installation and User Guide (10/02)
(DTEs) which have the longest round trip delay time.
PDV = (sum of cabling delays) + (sum of repeater & media
converter delays) + (DTE pair delays) + (safety margin)
PDV is the Path Delay Value of the worst case path. For the network to adhere to
IEEE 802.3u standard, this value must be less than 512 BT. The safety margin is specified in
BT and may be a value between 0 and 5. This margin can be used to accommodate unexpected
delays, such as an extra long patch cable. A safety margin of at least 2 to 4 BT is
recommended.
“Rules-of-thumb” Collision Domain Calculations
Rules-of-thumb, while inexact, may be helpful in planning network topology. As a
rule-of-thumb, a Class II Repeater has a PDV of about 90 to 95 BTs, and twisted-pair or fiber
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Magnum14E Media Converters Installation and User Guide (10/02)
media has a PDV of about 1 BT per meter of length. The Magnum 14E has a PDV of 20 BT.
Therefore, in shared Fast Ethernet applications, the 14E uses about 80 meters of equivalent
cable distance to convert from TX media to fiber FX media, i.e., it consumes almost as much of
the available PDV as a Class II repeater. Since a 512BT collision domain will almost always
include at least one repeater and two media segments, the remaining amount of Bit Times left
after allowing for a 14E and a length of fiber media indicates that the available fiber length will
be much less than the 412 meters that is the known maximum for fiber. Therefore, in shared
environments, Magnum 14E Media Converters will be of benefit when they allow the use of
fiber media, but not to gain distance by facilitating use of fiber media instead of twisted pair.
As a sample calculation, consider the question of what fiber cable distance
(connected by a pair of Magnum 14Es on each end) can be obtained that will interconnect two
100Mb hubs where the twisted pair cables to the user nodes are 10 meters in length.
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Magnum14E Media Converters Installation and User Guide (10/02)
The solution is :
512 = total available Bit Times in a collision domain diameter,
minus 100 BT for two DTEs on each end leaves 412 BTs,
minus 180 BT for two Class II repeaters leaves 232 BTs,
minus 20 BT for two 10-meter TP cables for hubs to users leaves 212 BTs,
minus 10 BT for two short TP cables from the hubs to 14E’s leaves 202 BTs,
minus 40 BT for two Magnum 14Es leaves 162 BTs for fiber cable,
which indicates a fiber cable length of about 160 meters.
It is obvious that using twisted pair wiring to connect the hubs would enable the interconnect
length to be the 100 meters maximum for twisted pair media, and this would still leave about a
hundred BTs as a safety margin. In other words, use of 14Es and fiber in this case did not gain
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Magnum14E Media Converters Installation and User Guide (10/02)
allowable maximum cable distance vs. TP cable without the 14Es.
Consider a more typical use of Magnum 14Es in a shared Fast Ethernet segment. A
stack of Fast Ethernet hubs comprises the only repeater in the collision domain, and the users
and servers in the local workgroup are each connected via Category 5 twisted pair cable, a
maximum of 30 meters (100 ft.) in length. It is desired to connect one remote user with a fiber
NIC via fiber cable, using a Magnum 14Es in the circuit. How long can the fiber cable be?
The solution is :
512 = total available Bit Times in a collision domain diameter,
minus 100 BT for two DTEs on each end leaves 412 BTs,
minus 90 BT for one Class II stackable repeater leaves 322 BTs,
minus 30 BT for one 30-meter TP cable from hub to user node leaves 292 BTs,
minus 5 BT for a short TP cable from the hub to 14E leaves 287 BTs,
minus 20 BT for one Magnum 14E leaves 267 BTs for fiber cable,
which indicates a fiber cable length of about 260 meters.
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Magnum14E Media Converters Installation and User Guide (10/02)
3.5 Connecting Fast Ethernet Media
Connecting Ethernet media to the Magnum 14E Media Converter is very simple and
straightforward. Using a properly terminated media segment, simply attach the cable end to the
appropriate connector. See Sections 4.2 and 4.3 for a description of the LEDs.
3.5.1 Connecting Twisted Pair (RJ-45 standard)
The following procedure describes how to connect a 100BASE-TX twisted pair
segment to the RJ-45 port on the Magnum 14E Media Converters. The procedure is the same
for both unshielded and shielded twisted pair segments.
1. Using standard 100BASE-TX media, insert either end of the cable with an RJ-45 plug
into the RJ-45 connector of the Magnum 14E Media Converter.
2. Connect the other end of the cable to the corresponding device.
3. Use the LINK LED ensure proper connectivity by noting that the LED will be
illuminated when the units are powered and proper connections established. If the LINK
LED is not illuminated, change the setting of the up-link switch (See Section 4.4 for
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Magnum14E Media Converters Installation and User Guide (10/02)
up-link switch information.) If this does not help, ensure that the cable is connected
properly at both ends and is not defective.
4. For all 14Es,the Link-Pass-through feature is standard, the two LINK LEDs operate
together, and either both LEDs are lit or neither is lit. Both of the attached cables must
be operable for LINK to be indicated. Absence of LINK does not point to the problem
cable segment, and the fault may be in either.
3.5.2 Connecting Fiber Optic 100BASE-FX, Type ST and SC, MM and Sgl.M
The following procedure applies to 100BASE-FX applications using the Magnum 14E
Media Converter with ST-type (twist-lock) and SC-type (snap-in) fiber connectors.
1. Before connecting the fiber optic cable, remove the protective dust caps from the tips of
the connectors on the Magnum 14E. Save these dust caps for future use.
2. Wipe clean the ends of the dual connectors with a soft cloth or lint-free lens tissue
dampened in alcohol. Make certain the connectors are clean before connecting.
Note: One strand of the duplex fiber optic cable is coded using color bands
at regular intervals; you must use the color-coded strand on the associated
ports at each end of the fiber optic segment.
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Magnum14E Media Converters Installation and User Guide (10/02)
3. Connect the Transmit (TX) port (light colored post) on the Magnum 14E to the
Receive (RX) port of the remote device. Begin with the color-coded strand of the cable
for this first “Transmit-to-Receive” connection.
4. Connect the Receive (RX) port (dark colored post) on the 14E to the Transmit (TX) port
of the remote device. Use the non-color coded fiber strand for this.
5. The LINK LED corresponding to the fiber port, on the front of the product, will
illuminate when a proper connection has been established at both ends (and when power
is ON in the units at each end). If LINK is not lit after cable connection, the normal
cause is improper cable polarity. Swap the fiber cables on the product connector to
remedy this situation.
6. Because of standard Link Pass Through feature the LINK indication will not be present
unless LINK is made for the cables on both sides.
3.5.3 Connecting Fiber Optic 100BASE-FX, Type MT-RJ Small Form Factor
The following procedure applies to 100BASE-FX applications using the Magnum 14E
Media Converter with MT-RJ (snap-in, two-fibers-in-one-piece) fiber connectors.
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Magnum14E Media Converters Installation and User Guide (10/02)
1. Before connecting the fiber optic cable, remove the protective dust cap from the tip
of the connector on the Magnum 14E.
2. Wipe clean the ends of the connector with a soft cloth or lint-free lens tissue
dampened in alcohol. Make certain the connector is clean before connecting.
Note: The MT-RJ connector is keyed so that it will only plug in when both
TX and RX fiber elements are correctly positioned.
3. Insert the male MT-RJ part into the female MT-RJ port. This connection is keyed so
that it only goes in one way, aligning the fiber pair for transmit and receive.
4. The LINK LED corresponding to the fiber port, on the front of the product, will
illuminate when a proper connection has been established at both ends (and when power
is ON in the units at each end). If LINK is not lit after cable connection, the normal
cause is improper cable seating. Re-insert the fiber cables on the product connector to
possibly remedy this situation.
5. Because of standard Link Pass-through feature, the LINK indication will not be present
unless LINK is made for the cables on both sides.
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Magnum14E Media Converters Installation and User Guide (10/02)
4.0 OPERATION
This section describes the operation of the Magnum 14E Media Converters including
power supply, up-link switch and AN/reg functionality, and LEDs.
4.1 Power Requirements, Power Supply Types
Magnum 14E Media Converters require 4 watts of power and are designed to be used
with an external power supply.
one version ("-d" models) for AC input power of 115 vac 60 Hz, and one version for 230 vac
50 Hz. The 115 vac version has a small transformer integral with a convenience power outlet
plug. The 230 vac version ("-i" models) has a small transformer integral with an IEC-type
power plug for a user-supplied AC power cord with a convenience power outlet plug. Both
types include a lightweight DC power cord to the applicable power jack on the Media
Converter unit.
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The external power supply unit supplied is one of two types;
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Magnum14E Media Converters Installation and User Guide (10/02)
4.2 Dual LED Indicators (front and side-panel LEDs)
LED Description
PWR Illuminates GREEN to indicate the unit is receiving DC power.
Note: Magnum 14E has Link Pass-through feature, see Section 4.5
LINK, Fiber port Steady ON when both attached cable segments are operational at
their respective other ends, blinking when receiving remote fault
from the other end.
LINK, Copper port Steady ON when the attached cable segments are
operational at their respective other ends
RX/ACT Activity, blinking indicates port is receiving
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Magnum14E Media Converters Installation and User Guide (10/02)
4.3 Up-Link or “Cross-over” Switch (On the RJ-45 port)
Magnum 14E Media Converters are equipped with an up-link slide switch to
accommodate switch- or repeater-to-converter connections without a special cross-over cable.
When set to the straight position (=), the Magnum 14E Media Converter is wired for normal
twisted pair connection to a user node device. When set to the cross-over position (X), the
Media Converter is wired with cross-over functionality for direct up-link to a network hub or
switch.
See Figure 4.4 below for the location of the switch on the Magnum 14E Media
Converter unit.
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Magnum14E Media Converters Installation and User Guide (10/02)
4.4 Manual AN / reg Switch (Auto-negotiate or Full-duplex Fixed 100Mb)
Magnum 14E Media Converters are equipped with a manual switch on the RJ-45
copper port. It is located just underneath the up-link switch, and is very tiny. See Figure 4.4
below.
The AN / reg switch provides the flexibility to the user to manually select either (a)
Auto-Negotiation support to send Fast Link Pulses (FLP’s) to the attached device, or (b) reg
mode for regular or normal operation. In all cases, the unit functions at both FDX and HDX
transparently, but always at 100Mbps speed. The factory default setting is AN (Auto-
Negotiation).
The difference in the two settings is for the attached port, i.e., the port in the
switch or hub or NIC at the other end of the twisted pair cable. If the attached port is of
the increasingly popular auto-negotiate-only variety, it needs to get FLPs from the 14E Media
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Magnum14E Media Converters Installation and User Guide (10/02)
Converter in order to decide what to do. Not receiving FLPs would indicate (incorrectly) that
the Magnum 14E is only capable of half-duplex operation. Setting the switch in the AN
position causes FLPs to be sent, advertising full-duplex capability. BUT NOTE . . . it is up to
the user who chooses the AN position to determine that the device on the other end of the fiber
cable is, in fact, capable of full-duplex operation. If it is not, choose the reg position and do
not advertise full-duplex.
The reg position is also suitable for use when non-auto-negotiating devices are
attached. In this case, the attached RJ-45 port (such as in a traditional managed switch) is set to
half-or full-duplex by the operator, and does not depend upon auto-negotiating FLPs. The 14E
itself is transparent half- or full-duplex, and will always operate correctly in this situation.
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Magnum14E Media Converters Installation and User Guide (10/02)
)
(
Up-link
Switch
Figure 4.4 End View of the 100Mb Magnum 14E Media Converter
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up-link
)(
user device
AN/reg
En d vie w
49
Magnum14E Media Converters Installation and User Guide (10/02)
X
K
ct
A
4.5 Standard LINK Pass-Through feature in 14E:
A LINK Pass-through
feature is standard in all Magnum
14E’s. It works one way only, i.e.,
RJ-45 LINK status pass-through to
fiber, in order not to interfere with
the auto-negotiation feature if it is
turned on
A
TWISTED PAIR
Magnum 14E
Media Converter
9V
D
C
.3
A
Lin
FIBER
k
n/F
F
UP LIN
Lin
Rx
k
/A
R
TX
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
23 24
R
Li
P
Li
R
X\
nk
Ac
wr
nk
X/
A
LINK Pass-through on
14E’s allows network devices attached to the RJ-45 port to sense the LINK status of the
attached copper cable along with the devices attached to both ends. When LINK is ON for the
copper cable, that status is passed to the fiber port’s LINK indicator of the 14E, and if the
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Twisted Pair
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24
LINK LED’s,
RJ-45 & Fiber
Fiber
Magnum14E Media Converters Installation and User Guide (10/02)
LINK is valid on the fiber segment, then LINK is ON for both ports of the 14E.
If LINK is not present on the copper side but is valid for the fiber side, the Pass-
through feature causes the LINK LED on the fiber port to blink rapidly to indicate there is a
LINK problem elsewhere. If LINK Receive is invalid on the fiber side, LINK will be OFF on
Fiber and ON for copper because the Pass-through does not apply to fiber-to-copper.
Each LINK LED, then, may be OFF or ON or Blinking. If it is Blinking, the Pass-
through feature is indicating a LINK problem on another cable segment and you should check
the cable connections and device power-on conditions accordingly.
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Magnum14E Media Converters Installation and User Guide (10/02)
5.0 TROUBLESHOOTING
All Magnum Ethernet products are designed to provide reliability and consistently
high performance in all network environments. The installation of Magnum 14E Media
Converters is a straightforward procedure (see INSTALLATION, Section 2.6); the operation
is also straightforward and is discussed in Section 4.
Should problems develop during installation or operation, this section is intended to
help locate, identify and correct these types of problems. Please follow the suggestions listed
below prior to contacting your supplier. However, if you are unsure of the procedures
described in this section or if the Magnum 14E Media Converters is not performing as
expected, do not attempt to repair the unit; instead contact your supplier for assistance or
contact GarrettCom Customer Support.
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Magnum14E Media Converters Installation and User Guide (10/02)
5.1 Before Calling for Assistance
1. If difficulty is encountered when installing or operating the unit, refer back to the
installation Section of the applicable chapter of this manual. Also check to make sure
that the various components of the network are interoperable.
2. Check the cables and connectors to ensure that they have been properly connected
and the cables/wires have not been crimped or in some way impaired during
installation. (About 90% of network downtime can be attributed to wiring and
connector problems.)
3. Make sure that an AC power cord is properly attached to each Magnum 14E Media
Converter unit. Be certain that each AC power cord is plugged into a functioning
electrical outlet. Use the PWR LEDs to verify each unit is receiving power.
4. If the problem is isolated to a network device other than the Magnum 14E Media
Converters product, it is recommended that the problem device is replaced with a
known good device. Verify whether or not the problem is corrected. If not, go to
Step 5 below. If the problem is corrected, the Magnum 14E Media Converters and its
associated cables are functioning properly.
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Magnum14E Media Converters Installation and User Guide (10/02)
5. If the problem continues after completing Step 4 above, contact your supplier of the
Magnum 14E Media Converters unit or if unknown, contact GarrettCom, Inc.by fax,
phone or email (
5.2 When Calling for Assistance
Please be prepared to provide the following information.
1. A complete description of the problem, including the following points:
a. The nature and duration of the problem;
b. Situations when the problem occurs;
c. The components involved in the problem;
d. Any particular application that, when used, appears to create the problem;
2. An accurate list of GarrettCom product model(s)involved, with serial number(s).
Include the date(s) that you purchased the products from your supplier.
3. It is useful to include other network equipment models and related hardware,
including personal computers, workstations, terminals and printers; plus, the
various network media types being used.
4. A record of changes that have been made to your network configuration prior
to the occurrence of the problem. Any changes to system administration
procedures should all be noted in this record.
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support@garrettcom.com) for assistance.
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Magnum14E Media Converters Installation and User Guide (10/02)
5.3 Return Material Authorization (RMA) Procedure
All returns for repair must be accompanied by a Return Material Authorization
(RMA) number. To obtain an RMA number, call GarrettCom Customer Service at (510)
438-9071 during business hours in California or email to
calling, please have the following information readily available:
Name and phone number of your contact person.
Name of your company / institution
Your shipping address
Product name
Serial Number (or Invoice Number)
Packing List Number (or Sales Order Number)
Date of installation
Failure symptoms, including a full description of the problem.
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support@garrettcom.com). When
Magnum14E Media Converters Installation and User Guide (10/02)
GarrettCom will carefully test and evaluate all returned products, will repair products
that are under warranty at no charge, and will return the warranty-repaired units to the
sender with shipping charges prepaid (see Warranty Information, Appendix A, for complete
details). However, if the problem or condition causing the return cannot be duplicated by
GarrettCom, the unit will be returned as:
No Problem Found.
GarrettCom reserves the right to charge for the testing of non-defective units
under warranty. Testing and repair of product that is not under warranty will result in a
customer (user) charge.
www GarrettCom com
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Magnum14E Media Converters Installation and User Guide (10/02)
5.4 Shipping and Packaging Information
Should you need to ship the unit back to GarrettCom, please follow these instructions:
1. Package the unit carefully. It is recommended that you use the original container if
available. Units should be wrapped in a "bubble-wrap" plastic sheet or bag for
shipping protection. ( You may retain all connectors and this Installation Guide.)
CAUTION: Do not pack the unit in Styrofoam "popcorn" type packing material.
This material may cause electro-static shock damage to the unit.
2. Clearly mark the Return Material Authorization (RMA) number on the outside of the
shipping container.
3. GarrettCom is not responsible for your return shipping charges.
4. Ship the package to:
GarrettCom, Inc.
213 Hammond Ave.
Fremont, CA 94539
Attn.: Customer Service
www GarrettCom com
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Magnum14E Media Converters Installation and User Guide (10/02)
APPENDIX A: WARRANTY INFORMATION
GarrettCom, Inc. warrants its products to be free from defects in materials and
workmanship for a period of three (3) years from the date of shipment by GarrettCom.
During this warranty period, GarrettCom will repair or, at its option, replace
components in the products that prove to be defective at no charge other than shipping
and handling, provided that the product is returned pre-paid to GarrettCom.
This warranty will not be effective if, in the opinion of GarrettCom, the product
has been damaged by misuse, misapplication, or as a result of service or modification
other than by GarrettCom.
GarrettCom reserves the right to make a charge for handling and inspecting any
product returned for warranty repair which turns out not to be faulty.
Please complete the warranty card as this acts as a product registration, and mail
it to GarrettCom within two weeks of your purchase.
www GarrettCom com
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