GarrettCom 4K16 User manual

GarrettCom 4K16 User manual
Corporate Headquarters
GarrettCom, Inc.
47823 Westinghouse Dr.
Fremont, CA 94539
Phone (510) 438-9071
Fax (510) 438-9072
Website: http://www.GarrettCom.com
email [email protected]
Magnum 4K-Series
4K16 Switches
Installation and User Guide
www . GarrettCom . com
www . GarrettCom . com
Magnum 4K16 Switches
Installation and User Guide
(12/05)
Magnum™ 4K-Series
4K16 Switches
Installation and User Guide
Part #: 84-000081 (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.
Important: The Magnum 4K16 Switches contains no user serviceable parts.
Attempted service by unauthorized personnel shall render all warranties null
and void. If problems are experienced with the Magnum 4K16 Switches,
consult Section 6, Troubleshooting, of this User Guide.
Copyright © 2005 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.
www . GarrettCom . com
i
Magnum 4K16 Switches
Installation and User Guide
(12/05)
Contacting GarrettCom, Inc
Please use the mailing address, phone and fax numbers and email address listed below.
GarrettCom, Inc.
47823 Westinghouse Dr.
Fremont, CA 94539
Phone (510) 438-9071
Fax (510) 438-9072
Website: http://www.GarrettCom.com
email [email protected]
Federal Communications Commission
Radio Frequency Interference Statement
Warning: Changes or modifications to this unit not expressly approved by the party
responsible for compliance could void the user’s authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a class
B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses, and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may cause harmful
interference in a residential installation. This equipment generates, uses, and can
radiate frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there
is no guarantee that interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment
does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures.
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into n outlet on a circuit different from that to
which the receiver is connected.
Consult the dealer or an experienced radio TV technician for help.
Canadian Emission
This Class B digital apparatus meets all requirements of the Canadian InterferenceCausing Equipment Regulations.
Cet appareil respecte toutes les exigences du Réglement sur le matériel du
Canada. Cet appareil est Classe B.
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ii
Magnum 4K16 Switches
Installation and User Guide
(12/05)
TABLE OF CONTENTS
Page
1.0
SPECIFICATIONS ............................................................................................ 1
1.1
Technical Specifications .................................................................................. 1
1.2
Ordering Information ....................................................................................... 3
2.0
INTRODUCTION .............................................................................................. 4
2.1
Inspecting the Package and Product................................................................. 4
2.2
Product Description - Magnum 4K16 Switches............................................... 5
2.2.1
Magnum 4K16F Switch chassis ............................................................. 5
2.2.2:
Magnum 4K16R “Reverse” model, front LEDs and connections in rear 6
2.2.3 Fiber-port module (FKM) options for 4K16’s and 4K16R’s, 100Mb fiber .. 7
2.2.4
4K16, 10/100 Dual-speed switched ports, RJ-45 (copper only).............. 8
2.2.5
Up-link Switch at port#1 for Cascading................................................. 9
2.2.6
Frame Buffering and Latency ................................................................. 9
2.3
Features and Benefits..................................................................................... 11
2.4
Applications ................................................................................................... 12
3.0
INSTALLATION ............................................................................................ 14
3.1
Locating Magnum 4K16 Switches................................................................. 14
3.2
Connecting Ethernet Media ........................................................................... 15
3.2.1
Connecting Fiber Optic ST-type, “twist-lock” ..................................... 15
3.2.2
Connecting Fiber Optic SC-type, "Snap-In" ......................................... 16
3.2.3
Connecting Single-Mode Fiber Optic ................................................... 16
3.2.4
Connecting MTRJ Fiber Optic “Snap-In”................................................. 16
3.2.5
Connecting Twisted Pair (RJ-45,CAT3, CAT5, Unshielded) ............... 16
3.3
Rack-mounting................................................................................................. 17
4.0
OPERATION.................................................................................................... 18
4.1
Switching Functionality ................................................................................. 18
4.2
Status LEDs ................................................................................................... 19
4.3
Up-link Switch, for RJ-45 Port#1 only .......................................................... 19
4.4
Auto-negotiation, for Fast Ethernet copper ports........................................... 19
4.5
Auto-negotiation full-duplex mode................................................................ 20
4.6
Flow-control, IEEE 802.3x standard.............................................................. 21
4.7
Power Budget Calculations for 4K-Series FKM’s with Fiber Media............. 21
5.0
INTRODUCTION - MAGNUM 4K16 FIBER-PORT MODULES (FKM) 23
5.1
Product Description ....................................................................................... 23
5.1.1
FKM-MST, 100Mbps multi-mode FX-ST-type, “twist-lock” connector23
5.1.2
FKM-MSC 100Mbps multi-mode FX-SC-type, “snap-in” connector. 23
5.1.3
FKM-SSC and –SSCL 100Mbps single-mode FX-SC-type, “snap-in” 23
5.1.4
FKM-MTRJ, 100Mb multi-mode FX, MTRJ small-form-factor ........ 24
5.1.5
FKM-Blank ........................................................................................... 24
6.0
TROUBLESHOOTING................................................................................... 25
6.1
Before Calling for Assistance ........................................................................ 25
6.2
When Calling for Assistance.......................................................................... 26
6.3
Return Material Authorization (RMA) ProcedureError! Bookmark not defined.
6.4
Shipping and Packaging Information............................................................. 27
APPENDIX A: WARRANTY INFORMATION ....................................................... 27
APPENDIX B : INTERNAL DC POWER SUPPLY OPTIONS............................... 28
APPENDIX C: INTERNAL DC DUAL-SOURCE POWER OPTION .................... 30
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iii
Magnum 4K16 Switches Installation and User Guide
Revisions
12/05 : Updated the specifications and minor updates.
10/04:
Edited minor change
04/03:
Edited minor change
(12/05)
Rev E 04/02 : Updated Rack-mounting, Appendix B & C with 24VDC and 125VDC
addition
Rev D 01/02 : Updated Operating Environment Spec.
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 12/00 : Addition of Warnings in the French Language.
Rev A 04/00 : This revision is the initial release of the 4K16 Switch user
manual.
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iv
Magnum 4K16 Switches
(12/05)
Installation and User Guide
The Magnum Line
ETHERNET CONNECTIVITY PRODUCTS
"DESIGNED AND MANUFACTURED IN THE USA"
OVERVIEW
GarrettCom, Inc.offers the premium-quality Magnum™ line of Ethernet LAN
connectivity products with industry-standard functionality and built-in fiber
configurability. Magnum products are designed for use in demanding Carrier Class,
Industrial Grade and OEM applications where reliability is a primary consideration.
6K25 Managed Fiber Switches, Gigabit, 100 and 10 Mbps, fiber and copper ports,
mix-and match. Features SFF fiber for up to 25 fiber ports in a 1U unit.
4K-Series Switches, 100 and 10 Mbps, copper ports with optional fiber port, with
auto-negotiating full switching performance.
Quad-Series Fiber Switches, 100 & 10Mbps, fiber and copper ports, mixed-speed
and mixed-media types, full switching performance.
“Outdoor” Ethernet Switch, for temperature uncontrolled locations
6 10/100 and 2 100Mb fiber ports, can be connected in strings
Mixed-Media Fiber Hub, 16-port Stackable,10/100 auto-sensing
Dual Speed 8-port and 16-port Stackables, 10/100 auto-sensing
Stackable Hubs, SNMP Optional
10Mb series and 100Mb series, both w/ optional port modules
Personal Switches, 10/100Mb
8 port dual speed, Auto-negotiable with fiber option
Personal Hubs, 100Mb or 10/100Mb
8-port, with two switched ports (1 fiber built in)
Personal Hubs, 10Mb series
8-port + AUI, stackable to 5 high, + optional BNC of fiber port
8 or 9-port and 4 or 5-Port Personal Hubs, w/ man. up-link sw.
Media Converters, 10Mb and 100Mb series
All media combinations, incl. fiber ST, SC, mm., single mode
The “X-line” of configurable MiXed Media products:
Stackable Concentrators, SNMP optional, 13-Ports
Mini-Concentrators, 7 Ports, Repeaters, 2-Ports
Repeater Port Modules (RPMs), 6 types for Ethernet media
Bridge Port Modules (BPMs), 4 types, for segment isolation
Transceivers, 10Mb series Mini-Transceivers and Coax Models
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Dec., 05
Magnum 4K16 Switches
1.0
1.1
Installation and User Guide
(12/05)
SPECIFICATIONS
Technical Specifications
Performance
Data Rate:
10 Mbps or 100MB, per port
Aggregate Forwarding Rate: (all ports are wire speed)
2.38M frames/sec for 16 100Mbps ports (for Magnum 4K16)
2.68M frames/sec for 16 100Mbps ports & two fiber ports
(16RJ-45 +2 Fiber ports)
Aggregate Filtering Rate:
(all ports are wire speed)
2.38M pps for all 16 ports
2.38M pps for all 18 ports (16 RJ-45 ports+ 2 Fiber ports)
Address Table Capacity: 4K node addresses, self-learning w/address aging
Packet buffer size : 512K dynamic
Latency:
5 µs + packet time (100 to 100Mbps)
15 µs + packet time (10 to 10 Mbps, and 10 to 100Mbps)
Network Standards
Ethernet V1.0/V2.0 IEEE 802.3: 10BASE-T,
IEEE 802.3u: 100BASE-TX, 100BASE-FX
Maximum 10 Mbps Ethernet Segment Lengths
Unshielded twisted pair, Cat 3
- 100 m (328 ft)
10BASE-FL multi-mode fiber optic - 2 km (6,562 ft)
10BASE-FL single-mode fiber optic - 10 km (32,810 ft)
Maximum Standard Fast Ethernet Segment Lengths:
10BASE-T (CAT 3, 4, 5 UTP)
- 100 m (328 ft)
100BASE-TX (CAT 5 UTP)
- 100 m (328 ft)
100BASE-FX, half-duplex, multi-mode
- 412 m (1350 ft)
100BASE-FX, full-duplex, multi-mode
- 2.0 km (6,562 ft)
100BASE-FX, half-duplex, single-mode
- 412 m (1350 ft)
100BASE-FX, full-duplex, single-mode
- 20.0 km (49,215 ft)
100BASE-FX, full-duplex, s.m(Long Reach)- 40.0 km (132,215 ft)
Connectors for copper wiring
Twisted Pair at 10/100Mb:RJ-45 shielded, female, front mounted
(for Magnum 4K-Series Fast Ethernet copper ports, use Cat 5 cable)
Fiber Multi-mode connector types:
Fiber Port, SC-type (snap-in):
Fiber optic multi-mode, 100BASE-FX
Fiber Port, ST-type (twist-lock): Fiber optic multi-mode, 100BASE-FX
Fiber Port, MTRJ-type (plug-in): Fiber optic multi-mode, 100BASE-FX
Fiber Single-mode connector types:
Fiber Port, SC-type:
Fiber optic single-mode, 100BASE-FX
Fiber Port, SC-type: Fiber optic "long-reach” single-mode, 100BASE-FX
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1
Magnum 4K16 Switches
Installation and User Guide
(12/05)
Manual switch-selections and jumpers
Fiber default: 100Mbps Full-duplex, F/H (Full/ Half duplex switch
settings)
Copper default: Auto-negotiation (Up-link switch for cascading at port #1,
(=) for normal port and (X) for an upstream cascaded hub or
switch
LEDs: Per Port
L/A: Steady ON for Link enabled, blinking indicates Activity, port
is transmitting and receiving
F/H: ON = Full-Duplex Mode
OFF = Half-Duplex Collision
100/10: ON = 100Mbps speed
OFF = 10 Mbps
Operating Environment
Ambient Temperature: 25° to 140° F (-5° to 60°C) optional extended range
Storage Temperature: -40°to 185°F (-40°to 85°C)
Ambient Relative Humidity: 5% to 95% (non-condensing)
Altitude: -200 to 13,000 ft. (-60 to 4000m)
Packaging
Enclosure: Rugged High strength metal. Suitable for stand-alone or
rack-mounting
Dimensions: 1.75 in H x 17.0 in W x 9.0 in D
4.45cm H x 43.2cm W x 22.9cm D
Weight:
3.2 lb. (1.4 Kg) rack-mount models
Cooling method: Fan cooled, @ 7 cfm
Power Supply (Internal)
AC Power Connector: IEC-type, male recessed at rear of chassis,
with adjacent manual ON-OFF switch (on AC models only)
Input Voltage:
110 to 240 VAC (auto-ranging)
Input Frequency: 47 to 63 Hz (auto-ranging)
Power Consumption: 17 watts typical, 25 watts max.
DC Power Supply (Options)
-48VDC Power Input Voltage : 36 to 72 VDC
24VDC Power Input Voltage : 20 to 36VDC
125VDC Power Input Voltage : 120 to 160VDC
Std. Terminal Block : “ -, GND, + ”
Power Consumption: same as for AC models, see above
For Dual Source and Redundant DC for –48VDC, 24VDC Power
& 125VDC supply options (Optional), see Appendices.
Agency Approvals
UL listed (UL1950), cUL, CE
Emissions meet FCC Part 15 Class B
Optional: ETSI and NEBS L3 Certified
Warranty
Three years, return to factory
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2
Made in USA
Magnum 4K16 Switches
1.2
Installation and User Guide
(12/05)
Ordering Information
Magnum 4K16 Switches
MODEL
DESCRIPTION
Magnum 4K16
Ethernet Switch with 16 RJ-45 ports, each auto-sensing for
10Mbps/10Mbps FDX/HDX operation. Optional fiber port
may be configured one or two from the family of modules
below and added another two ports Maxm. User selected
fiber port connector types. Each port is switched and
provides a full-speed traffic domain with non-blocking
performance. Includes internal auto-ranging power supply,
cooling fan, and metal brackets for rack-mounting. LEDs
and user ports are in the front, power inputs is in the rear.
Units with -48V power supply options available RFQ for
120VDC power option.
“Reverse” model, Same as Model 4K16 Switch except user
ports and the power input connectors are in the rear.
LEDs are in the front.
Magnum 4K16R
Fiber port modules for Magnum 4K-Series (Models 4K16F):
FKM-2SC
Fiber module with two 100Mbps multi-mode FX SC
connectors
FKM-2ST
Fiber module with two 100Mbps multi-mode FX ST
connectors
FKM-2MTRJ
Fiber module with two 100Mbps multi-mode FX “MTRJ”
connectors
FKM-2SSC
Fiber module with two 100Mbps 20Km single-mode FX
SC connectors
FKM-2SSCL
Fiber module with two 100Mbps 40 Km “long-reach”
single-mode FX SC connectors
FKM-1MTRJ
Fiber module for 4K-Series Switches, with one 100Mbps
multi-mode FX “MTRJ” connectors
FKM-1SSC
Fiber module with one 100Mbps 20Km single-mode FX
SC connectors
FKM-1SSCL
Fiber module with one 100Mbps 40 Km “long-reach”
single-mode FX SC connectors
FKM-BLNK
Blank face plate, included in 4K16 switch unit when no
fiber port option is selected
See appendices B and C for information on DC-powered models and options.
GarrettCom, Inc. reserves the right to change specifications, performance
characteristics and/or model offerings without notice.
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3
Magnum 4K16 Switches
Installation and User Guide
2.0
Introduction
2.1
Inspecting the Package and Product
(12/05)
Examine the shipping container for obvious damage prior to installing this
product; notify the carrier of any damage that 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 4K16(standard) or 4K16-R(reverse-mount) Switches
1
AC Power Cord (U.S. and other 115 VAC only)
1
Set of metal “Ears” for rack mounting
1
Installation and User Guide (this manual)
1
Product Registration Card
Remove the items from the shipping container. Be sure to keep the shipping
container should you need to re-ship the unit at a later date. To validate the product
warranty, please complete and return the enclosed Product Registration Card to
GarrettCom, Inc. as soon as possible.
In the event there are items missing or damaged, contact the party from whom
you purchased the product. If the unit needs to be returned, please use the original
shipping container if possible. Refer to Section 6, Troubleshooting, for specific return
procedures.
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4
Magnum 4K16 Switches
2.2
Installation and User Guide
(12/05)
Product Description - Magnum 4K16 Switches
Magnum 4K16 Switches boost the performance of medium sized Ethernet
LANs, with the flexibility of both twisted-pair and fiber switched port. Fiber ports may
number zero, one or two, may be configured from a variety of user selected popular fiber
connector as an additional port. The Magnum 4K16 provide the switching speed and the
reliability to support multiple workgroups, small offices, and departments each with its
own switched 100Mbps or 10Mbps domain, for increased network performance and with
“future-proof” fiber up-link ports built in.
The Magnum 16-port 4K16 Switches offer application flexibility with a series
of optional fiber connector types as two additional port as (16 RJ-45+ 2 Fiber ports). All
applicable fiber port connector types (100Mbps FX-ST, SC, MTRJ) along with multimode, single and Long-haul capability are configurable using a family of one- or two port modules. The optional fiber ports(two maxm.) can be configured and tested with the
Magnum 4K16 unit in the factory only. The rest sixteen RJ-45 ports are dual speed
10/100 Mb auto-negotiating.
Designed for use in departments, small offices with multiple workgroups, in
remote offices and in network traffic centers or multi-system power users, the Magnum
4K16 Series Switches are easy to install and use. Addresses of attached nodes are
automatically learned and maintained, adapting the switching services to network
changes and expansions. Front-mounted LEDs provide status information on each port.
The Magnum 4K-Series Switches provide high performance plug-and-play operation in
convenient rack-mount packages.
The Magnum 4K16 switches are non-blocking on all ports and include 512K
packet buffers and 4K-node address table for advanced performance as well as to support
large networks. The Magnum 4K-Series Switches, with store-and-forward switching,
filter all faulty packets to minimize traffic congestion.
2.2.1
Magnum 4K16F Switch chassis
Magnum 4K16 Series Switches come in chassis size of an 16-port rack-
mountable. The optional fiber port(zero. One or two) are user selected, and 100Mbps
fiber port can be configured from the popular fiber port connectors offered. The fiberport modules are offered with factory installed only.
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5
Magnum 4K16 Switches
Installation and User Guide
(12/05)
The 4K16 19” rack-mountable Switches comes along with 16 10/100 RJ-45
ports as a base model and have two additional fiber port(s) slot 100Mbps fiber (optional
factory configured only). The total port capacity is 18 switched ports.
Figure 2.2.1a: Front view, 16-port Magnum 4K16 Series Switches
1
Magnum 4K16-Series
Ethernet 10/100 Switch
POWER
ERROR
2
3
4
5
6
7
8C
8F
9F
= X
Col/FDX
10
11
12
13
14
15
16
F
H
F
H
Col/FDX
1
Magnum 4K16-Series
Ethernet 10/100 Switch
POWER
ERROR
2
3
4
5
6
7
8C
8F
9F
9C
10
11
12
13
14
15
16
SPEED
L/A
F/H
= X
Col/FDX
9C
SPEED
L/A
F/H
F
H
F
H
Col/FDX
All ports, LED connector and manual switches are located on the front panel
of Magnum 4K16 Series Switches. There are Full duplex/Half duplex (F/H) for fiber
port, Link/Activity (L/A) and 10/100(SPEED) LED indicators for each 10Mbps and
100Mbps domain, for visual indication of the operating status of each domain. There are
(POWER) and (ERROR)LEDs for indicating the power up and self test at power up
failed. The IEC standard AC power connector (and a manual ON - OFF power switch)
located at the rear. Fan-driven cooling air flows left to right on standard (non-reverse)
models.
Figure 2.2.1b: Rear view - Magnum
table-top & rack-mount 4K16C Switch
110-220
VAC
47-63Hz
1.0-0.5A
2.2.2:
ON
OFF
Magnum 4K16R “Reverse” model, front LEDs and connections in rear
Front View
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6
Magnum 4K16 Switches
(-) GND (+)
Installation and User Guide
(12/05)
ON
OFF
F
= X
48V DC
F
Rear View
H
H
F
H
F
H
1
Magnum 4K16-Series
Ethernet 10/100 Switch
Col/FDX
POWER
ERROR
2
3
4
5
6
7
8C
8F
9F
9C
10
11
12
13
14
15
16
SPEED
L/A
F/H
Col/FDX
The Magnum 4K16R is like the 4K16 except that the front panel has the LEDs, and all
the connecting ports and power feeds are in the back. This is convenient for rackmounting where cabling is accessed from the rear of the rack while the operating status
LEDs are monitored from the front. Typically such arrangements are found in telco rack
installations.
The Magnum 4K16R is dual-speed 10/100Mbps switch and has two fiber
connector port options. The switching capability provides high performance support for
multiple workgroups or for a power user on each port.
Normally the 4K16R is equipped with an optional internal -48VDC power
supply (See Appendix A). There is an additional option of a dual-source 48V input (See
Appendix B).
The DC power feed options and the high quality and versatility make the Magnum
4K16FR a good “carrier class” choice for internet infrastructure, ISPs, broadcast
equipment, medical, brokerage firm and financial facilities.
2.2.3
Fiber-port module (FKM) options for 4K16’s and 4K16R’s, 100Mb fiber
F
H
Fig.2.2.3 Fiber-Ports, FKM-ST, FKM-SC, FKM-MTRJ
The two fiber ports are optional for Magnum 4K16-series Switches. In a fiber
port module, all of the fiber ports are of the same speed, the same multi- or single-mode,
and the same connector type. Multi-mode 100Mbps models are available with ST, SC,
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7
Magnum 4K16 Switches
Installation and User Guide
(12/05)
MTRJ connectors. Single-mode 100Mbps models are available with SC connectors and
“Long-reach” for extra (up to 40 Km) long distance.
The 100Mb fiber port modules on the Magnum 4K16-series normally are set
(factory default) to operate in full-duplex mode for best fiber distance and performance.
On the Magnum 4K16 fiber series switches, the user may select full- or half-duplex
mode per-port with a manual switch (F-H) located underneath the fiber ports (See
Section 3.4) for the flexibility to adapt to any type of Fast Ethernet devices.
For Magnum fiber FKMs, there are LED’s mounted on the front of the chassis
labeled as port 8F and 9F. The Link (L/A) LED indicates ON with Link enabled,
blinking for RX port activity, and F/H indicates steady for full duplex and OFF for half
duplex. A fiber cable must be connected to each 100Mb port and a proper link (LK lit)
must be made with the device at the other end of the cable in order for the LK LEDs to
provide valid indications of operating conditions.
2.2.4
4K16, 10/100 Dual-speed switched ports, RJ-45 (copper only)
1
POWER
ERROR
2
3
4
5
6
7
8C
8F
9F
9C
10
11
12
13
14
15
16
SPEED
L/A
F/H
= X
F
H
F
H
The Magnum 4K16 copper Series has 16 dual speed 10/100Mb switched RJ-45
auto-negotiating ports. The 10/100Mb switched ports are independently N-way autonegotiating for operation at 10 or 100Mb speed in full- or half-duplex mode (as a default
setting). They independently move to half-duplex mode at 10 Mb or at 100Mb speed if
the device at the other end of the twisted pair cable is half-duplex or is not an autonegotiating device.
There are three LED’s for each port. The L/A (Link/Activity) steady ON for
Link with no traffic and blinking indicates port is receiving and transmitting. The SPEED
(10/100Mb) LED indicates operation at 100Mb speed when ON and at 10 Mb speed
when OFF (when auto-negotiation is not disabled). The F/H LED is ON to indicate fullduplex operation and OFF to indicate half-duplex mode and collisions. A twisted pair
cable must be connected into each RJ-45 10/100Mb port and a proper Link (LK lit) must
be made with the device at the other end of the cable in order for the LEDs to provide
valid indications of operating conditions.
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8
Magnum 4K16 Switches
2.2.5
Installation and User Guide
(12/05)
Up-link Switch at port#1 for Cascading
The port#1 is equipped with a Media Dependent Interface (MDI-X)
movable switch to simplify cascaded or up-link connections. It enables the first port’s
RJ-45 cable to either connect to a user station (=) or to be cascaded to another hub (X)
with cross-over switch. (See Section 4.4 for more details about Up-link). Like all 4K16
ports, Port # 1 is a dual-speed switch port which will sense the speed of the connected
device. When the Up-link port is used to cascade two Magnum 4K16 together, the autosensing feature will cause the connecting link to operate at 100Mb speed.
2.2.6
Frame Buffering and Latency
The Magnum 4K16 Series are store-and-forward switches. Each frame (or
packet) is loaded into the Switch’s memory and inspected before forwarding can occur.
This technique ensures that all forwarded frames are of a valid length and have the
correct CRC, i.e., are good packets. This eliminates the propagation of bad packets,
enabling all of the available bandwidth to be used for valid information.
While other switching technologies such as "cut-through" or "express" impose
minimal frame latency, they will also permit bad frames to propagate out to the Ethernet
segments connected. The "cut-through" technique permits collision fragment frames,
which are a result of late collisions, to be forwarded to add to the network traffic. Since
there is no way to filter frames with a bad CRC (the entire frame must be present in order
for CRC to be calculated), the result of indiscriminate cut-through forwarding is greater
traffic congestion, especially at peak activity. Since collisions and bad packets are more
likely when traffic is heavy, the result of store-and-forward operation is that more
bandwidth is available for good packets when the traffic load is greatest.
To minimize the possibility of dropping frames on congested ports, each
Magnum 4K16 Switches dynamically allocates buffer space from a 512K memory pool,
ensuring that heavily used ports receive very large buffer space for packet storage.
(Many other switches have their packet buffer storage space divided evenly across all
ports, resulting in a small, fixed number of packets to be stored per port. When the port
buffer fills up, dropped packets result.) This dynamic buffer allocation provides the
capability for the maximum resources of the Magnum 4K16 unit to be applied to all
traffic loads, even when the traffic activity is unbalanced across the ports. Since the
traffic on an operating network is constantly varying in packet density per port and in
aggregate density, the Magnum 4K16 Switches are constantly adapting internally to
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9
Magnum 4K16 Switches
Installation and User Guide
(12/05)
provide maximum network performance with the least dropped packets.
When the Switch detects that its free buffer queue space is low, the Switch
sends industry standard (full-duplex only) PAUSE packets out to the devices sending
packets to cause “flow control”. This tells the sending devices to temporarily stop
sending traffic, which allows a traffic catch-up to occur without dropping packets. Then,
normal packet buffering and processing resumes. This flow-control sequence occurs in a
small fraction of a second and is transparent to an observer. See Section 4.6 for
additional details.
Another feature implemented in Magnum 4K16 Switches is a collision-based
flow-control mechanism (when operating at half-duplex only). When the Switch detects
that its free buffer queue space is low, the Switch prevents more frames from entering by
forcing a collision signal on all receiving half-duplex ports in order to stop incoming
traffic.
The latency (the time the frame spends in the Switch before it is sent along or
forwarded to its destination) of the 4K16 Switches varies with the port-speed types, and
the length of the frame is a variable here as it is with all store-and-forward switches. The
4K16 Switch’s latency is 5 microseconds plus the packet time at 100Mb. See Section 1.1
Specifications.
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10
Magnum 4K16 Switches
2.3
Installation and User Guide
(12/05)
Features and Benefits
„
100Mb switching services for high performance Ethernet LANs
Magnum 4K16 Switches provide Fast Ethernet switching on all ports.
They perform high speed filter/forward operations on the traffic, giving
each port’s segment a full 100Mb (or 10 Mb) of bandwidth.
„
Option to configure with one or two fiber ports
Fiber port modules are available with one or two 100Mb mm-ST, SC,
MTRJ or single-mode SC. The configuration flexibility of fiber ports
allows 4K16 switches to adapt to mixed and changing fiber types.
„
RJ-45 (copper) ports, with N-way auto-negotiation
RJ-45 ports provide twisted pair segment connections, with N-way autonegotiation and switching capability per port.
„
Full-duplex or Half-duplex operation, auto-sensing
All fiber and RJ-45 (copper) ports are capable of half- or full-duplex,
individually selected. All RJ-45 ports support 10/100 auto-negotiation.
„
Standard (ports in front) or Reverse (ports in rear) rack mounting
The 4K16 is offered with ports and LEDs in the front, or in a “reverse”
package with LEDs in front and all Ethernet and power cables in the rear.
As a special feature of the 4K16 Reverse, LEDs are both front and rear. .
Standard 19’ rack mount brackets are included, while ETSI and 23” Telco
are optional.
„
Plug-and-Play installation for high performance switching
Magnum 4K16 Switches are self-learning for node addresses. They can be
placed into operation without complex set-up procedures, even in large
networks. They operate transparent to system software.
„
Standard AC power input, -48VDC, 24VDC, or 125VDC is available
Standard AC power input is IEC plug, auto-ranging for worldwide use. For
special applications, models with –48VDC, 24VDC, or 125VDC are
available. Dual source DC input can also be selected and configured on the
–48VDC, 24VDC, and 125VDC input models.
„
Extended Temperature Operation
The Magnum 4K16 has been tested for operation at temperatures of –5’C
to 55’C. NEBS-certified models have been tested to a greater range per
NEBS Level 3 requirements. For details, email [email protected]
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11
Magnum 4K16 Switches
2.4
Installation and User Guide
(12/05)
Applications
Magnum 4K16 Switches offer high performance flexibility, and are easily used
in a variety of applications including client/server computing, performance upgrades of
departmental networks, and collapsed backbone applications. The Dual-Speed
characteristic of the 4K16 Switches enables them to inter-connect a series of subnets (one
subnet per 4K-Series Switch) in a LAN traffic center. The subnet connections may be via
either optional fiber or twisted pair cabling, and may be 100Mbps or 10 Mbps speed and
full-or half-duplex mode. The 16 ports switching capability of 4K16 allow to support a
larger network with multiple workgroups.
The mixed-media capability is ideal for upgrading existing Ethernet LAN
networks, where existing cabling must be accommodated. The fiber-built-in media
capability is ideal for integrating future-proof fiber cabling into the LAN structure.
Example1: In general application, a Switch is needed to provide a Fast Ethernet
departmental backbone. A switch is needed to provide a Fast Ethernet departmental
LAN center requiring sixteen high speed LAN segments, at least 14 operating over
100Mbps full-duplex RJ-45 lines. In addition to interconnecting the two fiber backbone
segments in the network center, the Switch needs to provide high-speed switched support
for two central servers, for a connection to a router, and a combination of 10 and
100Mbps ports for a local workgroup of over a dozen users, printers, etc.
The Magnum 4K16 equipped with two optional Fiber port and 16 RJ-45 port
modules provides an economical solution, configured with 16 switched ports ( 10/100
RJ-45) in a rack-mount box. The two Fiber FKM can be selected to provide any
100Mbps fiber media connector type desired.
This requirement for connecting local devices over twisted pair cabling is
handled by the Magnum 4K16.With the optional Fiber-Port Module, a 2-port FKM, there
is a switched port for distance and high bandwidth throughput to the remote department
consisting of 4 users.
Since 100Mb fiber Ethernet has severe distance limitations at half-duplex, it is
necessary in high speed backbones to operate fiber links in the full-duplex mode. Many
low-end switches that only have RJ-45 N-way 10/100Mb ports would need to have a
media converter on each fiber line. But most media converters do not support autonegotiation and would not enable the fiber backbone lines to operate full-duplex. But the
Magnum 4K16 . . . with two optional switched fiber ports at 100Mb speed, with fullwww . GarrettCom . com
12
Magnum 4K16 Switches
Installation and User Guide
(12/05)
duplex mode as a default setting on fiber ports, and with some RJ-45 N-way 10/100Mb
ports as well. . . handles this application readily.
1
Magnum 4K16-Series
2
3
4
5
6
7
8C
8F
9F
9C
10
11
12
13
14
15
16
SPEED
L/A
F/H
POWER
ERROR
Ethernet 10/100 Switch
= X
F
H
F
H
Col/FDX
Col/FDX
Router
10
10
12V , 1.5Amps
Magnum DS80F Dual Speed
Personal Hub
L ink/A ct
Speed
Power
Error
F/H
GARRETT
POR TS
Tx
1SW
UPLINK
U PLINK
Rx
=
2SW
3
4
5
3
1SW
4
6
5
7
6
8
7
8
X
F
H
2SW
Figure 2.4a: The Magnum 4K16 provides a 10/100Mb backbone with high
bandwidth facility in a department
Example 2: In another situation for a small office or a classroom, a central Switch is
needed to provide for a 16-segment 100Mb Fast Ethernet backbone, with switched
support for 2 high speed local file servers for different departments to share, and for 5
small office networks for each department along with their printer. In addition, the router
connection for internet (WAN) and a couple of ports for future expansion are needed.
The Magnum 4K16 Switch, equipped with dual speed and switching capability
per port, fits nicely in this environment and offers future fiber backbone expansion.
1
Magnum 4K16-Series
2
3
4
5
6
7
8C
8F
9F
= X
Col/FDX
9C
10
11
12
13
14
15
16
SPEED
L/A
F/H
POWER
ERROR
Ethernet 10/100 Switch
5VD C, 2Amps
F
H
F
Magnum DS80 Dual Speed
Personal Hub
H
Col/FDX
Power
Link/Act
Speed
Error
F/H
GARR ETT
PORTS
Router
Tx
Rx
1SW
UPLINK
U PLINK
=
F
2S W
1SW
3
4
5
3
6
4
7
5
8
6
7
8
10
X
H
2SW
1
2
3
4
5
6
7
8
5 VDC, 2 Amps
Magnum DS80 Dual Speed
Personal Hub
Pow er
Link/Act
Spee d
Error
F/H
GA RRETT
POR TS
Tx
Rx
1 SW
UPLIN K
UPLI NK
=
F
2SW
1SW
3
4
5
3
6
4
7
5
8
6
7
8
10
X
10
H
2SW
5VDC, 2Amp s
1
2
3
4
5
6
7
Magnum DS80 Dual Speed
Personal Hub
8
Power
Li nk/Act
Sp eed
Er ror
F /H
G ARRETT
P ORTS
1SW
2SW
3
4
5
6
7
8
10
5 VDC, 2Amps
Tx
Magnum DS80 Dual Speed
Personal Hub
Pow er
Rx
UPL INK
UPLINK
=
F
Link/Act
1SW
3
4
5
6
7
8
5VD C, 2Amps
Magnum DS80 Dual Speed
Personal Hub
X
H
P ower
2SW
Speed
Error
Link/Ac t
Speed
Error
F/H
F/H
G ARRETT
GARR ETT
PORTS
10
Tx
Rx
1SW
UPLIN K
UPL INK
=
F
2SW
1SW
3
4
5
3
6
4
7
5
8
6
P ORTS
7
8
10
Tx
1
2
3
4
5
6
7
Rx
1SW
UPLINK
U PLINK
2SW
1SW
3
4
5
3
6
4
7
5
8
6
7
8
8
X
=
H
F
2SW
10
X
H
2SW
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
10
10
Fig. 2.4b: Magnum 4K16 Switch provides high bandwidth solution for small office
or class room, offering expansion via “future-proof” fiber.
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13
Magnum 4K16 Switches
3.0
Installation and User Guide
(12/05)
Installation
Before installing the equipment, it is necessary to take the
following precautions:
1.) If the equipment is mounted in an enclosed or multiple rack
assembly, the environmental temperature around the equipment
must be less than or equal to 500C.
2.) If the equipment is mounted in an enclosed or multiple rack
assembly, adequate air flow must be maintained for proper and
safe operation.
3.) If the equipment is mounted in an enclosed or multiple rack
system placement of the equipment must not overload or load
unevenly the rack system.
4.) If the equipment is mounted in an enclosed or multiple rack
assembly, verify the equipment’s power requirements to prevent
overloading of the building/s electrical circuits.
5.) If the equipment is mounted in an enclosed or multiple rack
assembly verify that the equipment has a reliable and
uncompromised earthing path.
6.) If the intra-building wiring (cabling) is involved with this
product(NEBS), then it is recommended to have shielded cable and
the shield is grounded at both ends.
Installation: This section describes installation of the Magnum 4K-Series Switches, as
well as connection of the various Ethernet media types.
3.1
Locating Magnum 4K16 Switches
The location of a Magnum 4K-Series Switch is dependent on the physical
layout of the network. Typically the Switch is placed in a central wiring location where
groups of network devices need to be connected in order to communicate with each
other. These Switches are typically rack mounted in a wiring closet see Section 3.3.2
below), but because they have rubber feet they can also be installed on a shelf or table
top.
Locate an AC receptacle that is within six feet (2 meters) of the intended Magnum 4KSeries site. The rugged metal case of the Magnum 4K-Series will normally protect it
from accidental damage in a lab or workplace setting. Maintain an open view of the
front to visually monitor the status LEDs. Keep an open area around the unit so that
cooling can occur from the small fan on the top of the silicon, while the unit is in
operation. See figure below.
Figure 3.1: Location of
H
F
16-port Magnum
110-220
4K16’s cooling fan air
VAC
47-63Hz
1.0-0.5A
exhaust
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14
ON
OFF
Magnum 4K16 Switches
3.2
Installation and User Guide
(12/05)
Connecting Ethernet Media
The Magnum 4K16 Switches are specifically designed to support all
standard Ethernet media types within a single Switch unit. This is
accomplished by complementing standard RJ-45 copper parts with a family of
Fiber-port Modules (FKMs) which can be individually selected and configured
per-port. See Section 2.4 for a description of the FKMs.
The various media types supported along with the corresponding IEEE
802.3 and 802.3u standards and connector types are as follows:
IEEE Standard
Media Type
Max. Distance
Port Module
Fiber:
100BASE-FX
small form factor
mm1 Fiber
sgl.m2 Fiber
sgl.m2 Fiber
2.0km (6,562 ft) FKM-MSC, -MST
20.0km (95K ft) FKM-SSC
40.0km (12K ft) FKM-SSCL
mm1 Fiber
2.0km (6,562 ft) FKM-MTRJ,
Copper:
10BASE-T & 100BASE-TX twisted pair 100m (328 ft)
1 mm = multi-mode
3.2.1
RJ45
2 sgl.m = single-mode
Connecting Fiber Optic ST-type, “twist-lock”
The following procedure applies to installations using a FKM with ST-type fiber
connectors. This procedure applies to ports using a FKM-MST.
1.
2.
3.
4.
5.
Before connecting the fiber optic cable, remove the protective dust caps from the
tips of the connectors on the FKM. Save these dust caps for future use.
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.
Connect the Transmit (TX) port (light colored post) on the Magnum FKM to the
Receive (RX) port of the remote device. Begin with the color-coded strand of
the cable for this first TX-to-RX connection.
Connect the Receive (RX) port (dark colored post on the PM) to the Transmit
(TX) port of the remote device. Use the non-color coded fiber strand for this.
The LINK LED on the front of the FKM will illuminate when a proper
connection has been established at both ends (and when power is ON in the unit).
If LINK is not lit after cable connection, the normal cause is improper cable
polarity. Swap the fiber cables at the FKM connector to remedy this situation.
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15
Magnum 4K16 Switches
3.2.2
Installation and User Guide
(12/05)
Connecting Fiber Optic SC-type, "Snap-In"
The following procedure applies to installations using a FKM with SC-type
fiber connectors, i.e., using FKM-MSC, FKM-SSC single-mode, and FKM10-MSC.
When connecting fiber media to SC connectors, simply snap on the two square
male connectors into the SC female jacks of the FPM until it clicks and secures.
3.2.3
Connecting Single-Mode Fiber Optic
When using single-mode fiber cable, be sure to use single-mode fiber port
connectors. Single-mode fiber cable has a smaller diameter than multi-mode fiber cable
(9/125 microns for single-mode, 50/125 or 62.5/125 microns for multi-mode where xx/xx
are the diameters of the core and the core plus the cladding respectively). Single-mode
fiber allows full bandwidth at longer distances, and may be used to connect 100 Mb
nodes up to 10 Km 18Km with the FKM-SSC and 40 Km with the FKM-SSCL.
The same procedures as for multi-mode fiber applies to single-mode fiber
connectors. Follow the steps listed in Section 3.2.2 above.
Connecting MTRJ Fiber Optic “Snap-In”
The “MTRJ” is a multi-mode fiber connector considered as a “small formfactor”, because of its small compact size. It looks almost like an RJ-45 port, but compact
in size and black color. The MTRJ’s small size and ease of connection make it a good
choice for 100Mbps fiber environment. FKM-MTRJ fiber may be used to connect 100
Mb nodes up to 2 Km at full duplex and 412m at half-duplex.
When connecting fiber media to MTRJ connectors, simply snap in the square
male connectors into the MTRJ female jacks of the FPM until it clicks and secures.
3.2.4
3.2.5
Connecting Twisted Pair (RJ-45,CAT3, CAT5, Unshielded or Shielded)
The RJ-45 ports of the Magnum 4K-Series can be connected to the following
two media types: 100BASE-TX and 10BASE-T. CAT 5 cables should be used when
making 100BASE-TX connections. When the ports are used as 10BASE-T ports, CAT 3
may be used. In either case, the maximum distance for unshielded twisted pair cabling is
100 meters (328 ft).
Media
Twisted Pair (CAT 3, 4, 5)
Twisted Pair (CAT 5)
IEEE Standard
10BASE-T
100BASE-TX
Connector
RJ-45
RJ-45
NOTE : It is recommended that high quality CAT. 5 cables (which work for both 10 Mb
and 100Mb) be used whenever possible in order to provide flexibility in a
mixed-speed network, since dual-speed ports are auto-sensing for either 10 and
100Mb/s.
The following procedure describes how to connect a 10BASE-T or 100BASETX twisted pair segment to the RJ-45 port. The procedure is the same for both
unshielded and shielded twisted pair cables.
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16
Magnum 4K16 Switches
1.
2.
3.
3.3
Installation and User Guide
(12/05)
Using standard twisted pair media, insert either end of the cable with an RJ-45
plug into the RJ-45 connector of the port. Note that, even though the connector is
shielded, either unshielded or shielded cables and wiring may be used.
Connect the other end of the cable to the corresponding device
Use the LINK LED to ensure proper connectivity by noting that the LED
will be illuminated when the unit is powered and proper connection is
established.
Rack-mounting
Installation of a
Magnum 4K16 Switch in a
19” rack is a simple
procedure. The units are 1U (1.70”) high. When properly installed, the front-mounted
LED status indicators should be in plain view and easy to read. Rack-mount installation
requires special 19” rack-mounted brackets and screws (included with each 4K16 unit).
The brackets attach to the front sides of the Switch, which is then fastened into a standard
19” RETMA rack.
1
Magnum 4K16-Series
Ethernet 10/100 Switch
POWER
ERROR
2
3
4
5
6
7
8C
8F
9F
9C
10
11
12
13
14
15
16
SPEED
L/A
F/H
= X
Col/FDX
F
H
F
H
Col/FDX
The 23” brackets and ETSI brackets are also available (optional) for rackmounting of Magnum 4K Series Switches. The 23” brackets are popular in the Telco
industry where they are a
standard for Central Office rack
mounting purposes. The 23”
brackets are mainly being used
for larger equipment assemblies
in rack-mounting frames, and are
frequently accessed in operation
from both sides.
TX
Magnum 4024F Switch
Powe
Col/FDX
Link/Ac
100
Col/FDX
Link/Ac
100
TX
1X
TX
Magnum 4024F Switch
Powe
X
TX
Magnum 4024F Switch
The ETSI (European
Telephone Standard) brackets
are similar to the 19” brackets
but use metric dimensions.
Col/FDX
Link/Ac
100
Col/FDX
Link/Ac
100
5
7
9
X
TX
2X 4X
6
8
10
1
5
3
8
10
12
11
14
16
18
20
12
13 15
17 19
22
14
18
16
20
21
24
22
23
X
TX
3
7
8
9
2X 4X
6
1
5
7
10
9
2X 4X
6
8
10
1
5
11
12
13 15
14
16
17 19
18
20
21
24
22
23
24
Col/FD
Link/Ac
100
1X
TX
Magnum 4024F Switch
Powe
6
1
Col/FD
Link/Ac
100
1X
Powe
2X 4X
Col/FD
Link/Ac
100
X
TX
3
11
12
13 15
17 19
14
18
16
20
21
22
23
24
Col/FD
Link/Ac
100
1X
3
7
9
11
13 15
17 19
21
23
The optional 23”
brackets and the ETSI brackets
come as a pair in a package,
along with the necessary screws
for attaching the brackets to the
sides of the Magnum Switch unit.
Fig 3.3 Multiple Magnum 4K16 units rack-mounted in a 23” Rack-mount frame
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17
Magnum 4K16 Switches
Installation and User Guide
4.0
OPERATION
4.1
Switching Functionality
(12/05)
This chapter describes the functions and operation of the 4K-Series.
A Magnum 4K-Series provides switched connectivity at Ethernet wire-speed
among all of its ports. They support 10/100Mbs for copper media and 10 or 100Mb
separate traffic domain for fiber port to maximize bandwidth utilization and network
performance. All ports can communicate to all other ports in a Magnum 4K-Series, but
local traffic on a port will not consume any of the bandwidth on any other port.
Magnum 4K-Series units are plug-and-play devices. There is no software or
jumper settings (hardware) configuring to be done at installation or for maintenance. The
internal functions are described below.
Filtering and Forwarding
Each time a packet arrives on one of the switched ports, the decision is taken to
either filter or to forward the packet. Packets whose source and destination addresses are
on the same port segment will be filtered, constraining them to that one port and relieving
the rest of the network from processing them. A packet whose destination address is on
another port segment will be forwarded to the appropriate port, and will not be sent to the
other ports where it is not needed. Traffic needed for maintaining the operation of the
network (such as occasional multi-cast packets) is forwarded to all ports.
The Magnum 4K-Series Switches operate in the store-and-forward switching
mode, which eliminates bad packets and enables peak performance to be achieved when
there is heavy traffic on the network.
Address Learning
All 16-port Magnum 4K-Series units have address table capacity of 4K node
addresses, suitable for use in large networks. They are self-learning, so that as nodes are
added or removed or moved from one segment to another, the 4K16-Port Switch
automatically keeps up with node locations.
An address-aging algorithm causes least-used addresses to fall out in favor of
new frequently-used addresses. To reset the address buffer, cycle power down-and-up.
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18
Magnum 4K16 Switches
4.2
Installation and User Guide
(12/05)
Status LEDs
For Magnum 4K16 models :
PWR
L/A
F/H
Speed
4.3
: Power LED, ON when external power is applied to the unit.
: Steady ON for link with no traffic, blinking indicates port is
transmitting and receiving.
: Full / Half duplex LED, steady ON when the port is running full
duplex, blinking for half duplex collisions
: Speed LED, ON when the speed is 100Mbps , OFF when the
speed is 10 Mbps.
Up-link Switch, for RJ-45 Port#1 only
1
Magnum 4K16-Series
Ethernet 10/100 Switch
POWER
ERROR
2
3
4
5
6
7
8C
= X
Col/FDX
8F
9F
9C
10
11
12
13
14
15
16
SPEED
L/A
F/H
F
H
F
H
Col/FDX
Figure 4.3 : Up-link switch on RJ-45 Port#1
Magnum 4K16s each have one Up-link manual switch next to port #1 which it
controls, can be used while cascading with other hub switch or any communicating
device. The Up-link switch allows repeater-to-repeater connections without a special
cross-over cable. It works the same for 10Mb or 100Mb connections.
Move sliding switch to “=” (or ports 2 thru 16) for straight-through
twisted pair cabling from the 4K16 switched port to a user device, or to “X” for
cross-over or up-link segment connections from the first 4K16 port to a repeater or
hub or switch. Verify proper port connection by noting the port’s LINK/ACT status,
which is illuminated when a proper link is made and blinking when there is activity.
4.4
Auto-negotiation, for Fast Ethernet copper ports
One frequently-used application for the Magnum 4K16 Switch copper ports is
to connect one of them using a fiber media converter to another Switch in the network
backbone, or to some other remote 100Mb device. In this case, it is desirable to operate
the fiber link at 100Mb speed, and at either half- or full duplex mode depending on the
capabilities of the remote device. Standard commercially-available Fast Ethernet media
converters mostly do not support auto-negotiation properly, and require that the switched
port to which they are connected be at 100Mb fixed speed. Attachment to 10/100 autonegotiation ports typically will not work properly
When 4K16 Switch’s RJ-45 copper ports are set for auto-negotiation and
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19
Magnum 4K16 Switches
Installation and User Guide
(12/05)
connected to an another auto-negotiating device, there are 4 different speed and F/H
modes selection depending on what the other device supports. These are: (1) 100Mb
full-duplex, (2) 100Mb half-duplex, (3) 10 Mb full-duplex and (4) 10 Mb half-duplex.
The auto-negotiation logic will attempt to operate in descending order and will normally
arrive at the highest order mode that both devices can support at that time. (Since autonegotiation is potentially an externally-controlled process, the original “highest order
mode” result can change at any time depending on network changes that may occur). If
the device at the other end is not an auto-negotiating device, the 4K16-Switch’s RJ-45
ports will try to detect its idle signal to determine 10 or 100 speed, and will default to
half-duplex at that speed per the IEEE standard.
General information Auto-negotiation per-port for 802.3u-compliant switches occurs when:
the devices at both ends of the cable are capable of operation at either 10
Mb or 100Mb speed and/or in full- or half-duplex mode, and can
send/receive auto-negotiation pulses, and . . .
-- when the second of the two connected devices is powered up*, i.e.,
when LINK is established for a port, or
-- when LINK is re-established on a port after being lost temporarily.
•
NOTE – some NIC cards only auto-negotiate when the computer system
that they are in is powered up. These are exceptions to the “negotiate at
LINK – enabled” rule above, but may be occasionally encountered.
When operating in 100Mb half-duplex mode, cable distances and hop-counts
may be limited within that collision domain. The Path Delay Value (PDV) bit-times must
account for all devices and cable lengths within that domain. For Magnum 4K-Series
Fast Ethernet switched ports operating at 100Mb half-duplex, the bit time delay is 50BT.
4.5
Auto-negotiation full-duplex mode
Full-duplex Ethernet provides separate Transmit and Receive data paths,
enabling simultaneous bi-directional collision-free data movements on a port. The
network topology must be a “star” type, not a “bus” type. With full-duplex mode, the
cable distance is only limited by the physical layer line driver and cable attenuation.
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There are no collision-domain restrictions or limitations.
The Magnum 4K-Series Switches perform half- or full-duplex mode autonegotiation independently on all switched ports. If the device or node on the other end of
a port’s attached cable supports auto-negotiation or is set to operate as full-duplex, the
Magnum 4K16 Switch will negotiate to run full-duplex. If the attached device or node
doesn’t support F/H mode or fixed at Full or Half duplex (for example, if it is a 10 Mb
repeater or a standard 10 Mb hub or older Switch with Fixed full duplex mode), the
4K16-Switch’s RJ-45 ports will default to operate at half-duplex.
4.6
Flow-control, IEEE 802.3x standard
Magnum 4K- Series Switches incorporate a flow-control mechanism for Full-
Duplex mode. The purpose of flow-control is to reduce the risk of data loss if a long
burst of activity causes the switch to save frames until its buffer memory is full. This is
most likely to occur when data is moving from a 100Mb port to a 10 Mb port, and the
speed difference makes the 10Mb port unable to keep up. It can also occur when multiple
100Mb ports are attempting to transmit to one 100Mb port, and in other protracted heavy
traffic situations.
Magnum 4K-Series Fiber Switches implement the 802.3x flow control (nonblocking) on Full-Duplex ports, which provides for a “PAUSE” packet to be transmitted
to the sender when the packet buffer is nearly filled and there is danger of lost packets.
The transmitting device is commanded to stop transmitting into the switched port for
sufficient time to let the Switch reduce the buffer space used. When the available freebuffer queue increases, the Switch will send a “RESUME" packet to indicate the
transmitter to start sending the packets. Of course, the transmitting device must also
support the 802.3x flow control standard in order to communicate properly during
normal operation.
Note: When in Half-Duplex mode, the 4K16-switch implements a backpressure algorithm on 10/100 Mb ports for flow control. That is, the switch prevents
frames from entering the device by forcing a collision indication on the half-duplex ports
that are receiving. This temporary “collision” delay allows the available buffer space to
improve, as the switch catches up with the traffic flow.
4.7
Power Budget Calculations for 4K-Series FKM’s with 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 using Magnum products, the following equations should be used:
OPB (Optical Power Budget) = PT(min) - PR(min)
where PT = Transmitter Output Power, and PR = Receiver Sensitivity
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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.
Fiber
Port
Module
Speed,
Std.
Mode
Std. Wave Cable X’mitr R’cvr Worst Worst* typical typical*
km
Size Output Sens. OPB, distance OPB, distance
fdx length µm PT , dB PR ,dB dB Km, fdx
dB Km, fdx
(hdx) nm
FKM2
100Mb Multimode (0.4)
MST, MSC FX
100Mb Single- 18+
FKM-SSC FX
mode (0.4)
1300 62.5/125 -20
50/125 -23.5
-31
-31
9.0
5.5
2.5
2.0
14
12
5
4
1300
-31
14
28
17.5
35
9/125
-15
100Mb Multimode
FX
2
(0.4)
1300 62.5/125 -20
50/125 -23.5
-31
-31
9.0
5.5
3.0
2.0
15.8
12.2
5.5
4.0
FKM-SSCL 100Mb Singlemode
FX
40
(0.4)
1300
-34
29
58
32.5
65
FKMMTRJ
9/125
-5
* Note: The use of either multi-mode or single-mode fiber to operate at 100Mbps speed
over long distances (i.e., in excess of approx. 400 meters) can be achieved only
if the following factors are both applied:
•
The 100Mb fiber segment must operate in full-duplex (FDX) mode, i.e. the
full-duplex (factory default) setting for 100Mbps fiber ports 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)
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Magnum 4K16 Switches
5.0
Installation and User Guide
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Introduction - Magnum 4K16 Fiber-Port Modules (FKM)
This chapter describes each Fiber-Port Module (FKM), including appearance,
functionality, and status displays
5.1
Product Description
An important feature of the Magnum 4K-Series is the use of FiberPort Modules (FKMs) for flexible mixed-media connectivity to RJ-45 and fiber
media. Since the Magnum 4K-Series Switches have dual-speed capability for
copper ports, the copper port interfaces are designed to support all standard
Ethernet media types at 100Mps speed. Each FKM provides one port for
connecting Ethernet segments with its individual connector type and media.
For a list of Fiber-Port Module types, refer to Section 1.2
Each FKM is individually described in the following sections.
NOTE: The Fiber Module option are offered as Factory installation only and
5.1.1
will be added as additional two ports (16RJ-45 + 2 Fiber ports).
FKM-MST, 100Mbps multi-mode FX-ST-type, “twist-lock” connector
The Magnum FKM-MST is a multi-mode 100Mbps fiber optic module
equipped with a dual ST-type
100BASE-FX,
FKM-2ST Connectors
connector. It functions as a fiber optics
transceiver to support 100BASE-FX
network segments. When installed in a
Magnum 4K16 Full-duplex Switch, it
supports fiber optic cable distances up
to the IEEE-specified switch distance limits, i.e., typically 2000 meters.
5.1.2
FKM-MSC 100Mbps multi-mode FX-SC-type, “snap-in” connector
The Magnum FKM-MSC is also a
100BASE-FX,
FKM-2SC Connectors
multi-mode 100Mbps fiber optic transceiver
module, similar to the FKM-MST.
F
H
F
H
While the functionality of the these two
modules is the same, the FKM-MSC is equipped
with an SC-type "snap-in" connector instead of an ST-type.
5.1.3
FKM-SSC and –SSCL 100Mbps single-mode FX-SC-type, “snap-in”
The Magnum FKM-SSC (and –SSCL) is a single-mode 100Mbps fiber optic
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module equipped with a dual SC-type connector. It functions as a full fiber optic
transceiver to support single-mode fiber networks.
To distinguish the single-mode FPM-SSC from the multi-mode FKM-MSC, the
label “Sgl. M.” is at the top of the faceplate of the FKM-SSC.
5.1.4
FKM-MTRJ, 100Mb multi-mode FX, MTRJ small-form-factor
connector
Magnum FKM-MTRJ is a
100BASE-FX, Small Form Factor
FKM-2MTRJ Connectors
multi-mode fiber optic module equipped
with a small-form-factor MTRJ-type
connector. It looks almost like an RJ-45
port, but it is black plastic in color. The
MT-RJ’s small size and ease of
connection make it a good choice for 100Mbps Ethernet connectivity. When installed in
a Magnum 4K16 Full-duplex Switch, it supports fiber optic cable distances up to the
IEEE-specified switch distance limits, i.e., typically 2000 meters.
The functionality of this 100BASE-FX multi-mode FKM-MTRJ is the same as
the ST and SC-types. Note that the other end of the fiber cable may have a different
connector, not necessarily an MT-RJ type.
5.1.5
FKM-Blank
The FKM-Blank is a blank face
plate that must be installed in any empty
FKM slot. When the Magnum 4K16 chassis
contains less than two front-mounted FKMs,
Note:
The FKM-Blank
must be installed in
each empty PM slot.
the empty front slots must be covered with
the FKM-Blank face plate in order to maintain
proper cooling air flow, and for safety, etc.
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FKM-Blank
Magnum 4K16 Switches
6.0
Installation and User Guide
(12/05)
TROUBLESHOOTING
All Magnum Ethernet products are designed to provide reliability and
consistently high performance in all network environments. The installation of Magnum
4K16 Series Switches 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 4K16 Series Switch is not
performing as expected, do not attempt to repair the unit; instead contact your supplier
for assistance or contact GarrettCom Customer Support.
6.1
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.
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.)
Make sure that an AC power cord is properly attached to each Magnum 4K16
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.
If the problem is isolated to a network device other than the Magnum 4K16
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 4K16 Series Switches and
its associated cables are functioning properly.
If the problem continues after completing Step 4 above, contact your supplier
of the Magnum 4K16 unit or if unknown, contact GarrettCom, Inc.by
fax, phone or email ([email protected]) for assistance.
2.
3.
4.
5.
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Magnum 4K16 Switches
6.2
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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.
6.3
Return Material Authorization (RMA) Procedure
All returns for repair must be accompanied by a Return Material Authorization
(RMA) number. To obtain an RMA number, please use this URL https://rma.garrettcom.com/rma/rma_request_noaccount.php to fill out the form.
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.
GarrettCom will carefully test and evaluate all returned products, will
repair products that are under warranty at no charge, and will return the warrantyrepaired 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.
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6.4
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.
47823 Westinghouse Dr.
Fremont, CA 94539
Attn.: Customer Service
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.
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APPENDIX B : INTERNAL DC POWER SUPPLY OPTIONS
B1.0
SPECIFICATIONS - FOR MAGNUM 4K16 DC-POWERED SWITCHES
Power Supply (Internal -48VDC Option)
DC Power Connector: 3 terminals: “-“, “GND”, “+”
Input Voltage:
36 - 70 VDC
Power Consumption: Model 4K16: 17 watt typical, 25 watts max.
Power Supply (Internal 24 VDC Option) Industrial Application
DC Power Connector: 3 terminals: “-“, “GND”, “+”
Input Voltage:
20 - 36 VDC
Power Consumption: Model 4K16: 17 watt typical, 25 watts max.
Power Supply (Internal 125 VDC Option) Industrial Application
DC Power Connector: 3 terminals: “-“, “GND”, “+”
Input Voltage:
120 - 160 VDC
Power Consumption: Model 4K16: 17 watt typical, 25 watts max.
With the exception of the power supply, all specifications and functions of
Magnum 4K-Series-48VDC, 24VDC and 125VDC models are identical to those listed in
the main manual.
B2.0-48VDC, 24VDC & 125VDC POWER OPTION, THEORY OF OPERATION
The -48VDC, 24VDC & 125VDC power option are designed using diodes
inside on each DC power input line behind the two external power connection terminals,
so that the power from an external
POWER SWITCH
HUB
SUPPLY
source can only flow into the hub.
A+
This allows the Switch to operate only
A-
whenever DC power is correctly
GND
applied to the two inputs. It protects
+
-
FUSE
CHASSIS
GND
the Switch from incorrect DC input connections. An incorrect polarity connection, for
example, will neither affect the Switch, its internal power supply , nor will it blow the
fuse in the internal power supply.
The manual power “On-Off” Switch (optional) is used for powering the unit on
and off when it is placed into or taken out of service.
B3.0
APPLICATIONS FOR DC POWERED SWITCHES
Magnum 4K-Series Fiber Switches are easily installed in a variety of
applications where -48VDC, 24VDC & 125VDC power is used as the primary power
source. The- 48VDC, 24VDC & 125VDC power configuration provides an Ethernet
networking solution utilizing a special power supply in hubs with a proven track record.
The –48VDC solution is particularly useful in the telecommunication industry,
where it is common for facilities to operate on -48VDC power. Such companies include
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regular and wireless telephone service providers, Internet Service Providers (ISPs) and
other communication companies. In addition, many high availability equipment services,
such as broadcasters, publishers, newspaper operations, brokerage firms and other
facilities often use a battery backup system to maintain operations in the event of a power
failure. It is also frequently used for computer system backup, management and
operations monitoring equipment.
The 24VDC and 125VDC solution are particularly useful in the Industrial
environment, where it is common for facilities to operate on 24VDC or 125VDC power.
The 125VDC solution is mainly used in Utilities Industries, such as Electric substation,
Electrical generating plant etc. Whereas 24VDC application is mainly in the Industrial
environment, such as chemical plants, paper mill, stone quarrying plant, wastewater
treatment Plant etc.
B4.0
INSTALLATION
This section describes the installation of the -48 VDC, 24VDC & 125VDC power source
leads to the -48 VDC, 24VDC & 125VDC power terminal block on the Magnum Ks. (see
figure at the right).
In this picture, the
_ GND +
-48VDC terminal block on the Magnum
4Ks is located on the rear of the unit and
ON
is equipped with three (3) screw-down
OFF
lead posts. It is similar for 24VDC and
125VDC options on Magnum 4Ks. The
leads are identified as negative (-),
positive (+), and chassis ground (GND).
36-70VDC
Figure B4.1: -48VDC Terminal Block on Magnum Ks-48VDC
The actual connection procedure is straightforward. Simply connect the leads
to the Magnum unit, beginning with ground. Ensure that each lead is securely tightened.
Note: The GND should be hooked up first. The 4K unit has a floating ground,
so the user may elect to Ground either + or = terminal to suit the customer’s use.
Before connecting hot lines to the Terminal Block of –48VDC, 24VDC or
125VDC, always use a digital voltmeter to measure the output voltage of the power
supply and determine the lead which is more “+ve potential”. The more “+ve” voltage
lead from 48V or –48V supply must be connected to the post labeled “+”.
An ON-OFF manual switch is optional for DC power. This can be used to cut
off power connections and as a RESET for the 4K-Series Switch.
B4.1
1.
2.
3.
UL Requirements
Minimum 14 AWG cable for connection to a Centralized DC power source.
Fastening torque of the lugs on the terminal block: 9 inch pound max.
Centralized DC Power Source cable securement, use at least four cable ties to
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secure the cable to the rack at least 4 inches apart with the first one located
within 6 inches of the terminal block.
B5.0
OPERATION
Operation of the Magnum Ks with the optional -48VDC, 24VDC & 125VDC
power supply is identical to that of the standard AC-powered models.
B6.0
ORDERING INFORMATION
To order the optional -48VDC power supply factory installed, add a suffix of “-
-48VDC” after the product’s standard model #. Example: Magnum 4K16-48VDC.
Similarly, to order the optional 24VDC or 125VDC industrial specific power
supply factory installed, add a suffix of “ 24VDC” or “125VDC” after the product ‘s
standard model #. Example: Magnum 4K16- 24VDC or Magnum 4K16- 125VDC.
B7.0
TROUBLESHOOTING
Please refer to Section 6.0 for troubleshooting
APPENDIX D: INTERNAL DC DUAL-SOURCE POWER OPTION
C1.0
SPECIFICATIONS - FOR MAGNUM 4K-SERIES FIBER SWITCH
Power Supply (Internal, -48VDC Dual-Source, model # Dual-Src-48V)
DC Power Connector: First Source: “A+”, “A-“, 2nd Source “B-“, “B+”
GND:
Terminal for “earth” or ground wire connection to the hub chassis
Input:
Two separate sources, each at 36 - 70 VDC
Power Consumption: Model -4K16: 17 watt typical, 25 watts max.
Power Supply (Internal, 24VDC Dual-Source, model # Dual-Src-24V)
DC Power Connector: First Source: “A+”, “A-“, 2nd Source “B-“, “B+”
GND:
Terminal for “earth” or ground wire connection to the hub chassis
Input:
Two separate sources, each at 20 - 36 VDC
Power Consumption: Model -4K16: 17 watt typical, 25 watts max.
Power Supply (Internal, 125VDC Dual-Source, model # Dual-Src-125V)
DC Power Connector: First Source: “A+”, “A-“, 2nd Source “B-“, “B+”
GND:
Terminal for “earth” or ground wire connection to the hub chassis
Input:
Two separate sources, each at 120 - 160 VDC
Power Consumption: Model -4K16: 17 watt typical, 25 watts max.
With the exception of the dual DC input power connections and the power
supply, all specifications and configuration options for the Magnum 4K16 -48VDC, 4K1624VDC & 125VDC with this Dual-Source option are identical to those listed in the
Magnum 4K-Series Fiber Switches Installation and User Guide, including Appendix B
“Internal DC Power Supply Option”
C2.0 MAGNUM 4K-SERIES , with -48VDC, 24VDC & 125VDC Dual-Source option
The 4K16-Switch models with the internal -48VDC, 24VDC & 125VDC Dualwww . GarrettCom . com
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Source power supply are designed for installations where a battery plant is the power
source, and where two separate power sources are utilized in order to increase
operational uptime and to simplify maintenance.
The functionality of the Magnum 4K-Series -48VDC, 24VDC & 125VDC
Dual-Source Option units are identical to the standard AC-powered models. Refer to the
main sections of this Installation and User Guide for a detailed description of the
Magnum 4K-Series Switches.
C3.0
DUAL-SOURCE OPTION, THEORY OF OPERATION
The Dual-Source DC power option is designed using diodes inside of the
chassis on each DC power input line. A diode is placed in each of the four input lines
(behind the four external power connection
A+
HUB
terminals) so that power from an external
SUPPLY
A+
source can only flow into the unit. This
allows the unit to operate whenever DC
Bpower is correctly applied to either or both
B+
of the two inputs
FUSE
GND
C4.0
a)
b)
c)
d)
e)
CHASSIS
GND
FEATURES AND BENEFITS OF THE DUAL-SOURCE DESIGN
The Switch unit can receive power from either input, “A” or “B”. The hub will normally draw
its power from the DC source with the highest voltage at a given time.
The Switch unit will not allow power to flow from a higher voltage input to a lower voltage
input, i.e. the two DC power sources are not mixed together by the hub.
When one correct DC input is present, the Switch will receive power if the other DC input is
absent, or even if it is connected with reverse polarity or shorted or grounded.
Reverse polarity connections, if they should accidentally occur on either input, will not damage
the Switch or power supply internally (nor will it blow the fuse in the internal power supply)
because of the blocking action of the diodes. This is true even if one input connection is
reversed while the Switch is operating from the other source.
The Switch will not receive power (and will not work) when both inputs are simultaneously
absent or are both incorrectly connected.
C5.0
INSTALLATION
This section describes the proper connection of the -48VDC, 24VDC &
125VDC dual source leads to the -48VDC, 24VDC and 125VDC power terminal block
on the Magnum 4K-Series Switch (shown in Figure )
The -48VDC terminal block on the Magnum 4K-Series Switch is located on
the right rear of the unit and is equipped
A+ A- B- B+
with five (5) screw-down lead posts (see
Fig C5.0). The primary terminals are
identified as positive (A+), negative (A), and the secondary power terminals as
negative (B-), positive(B+). The
36-70VDC 36-70VDC
GND
chassis “earth” or ground (GND), is a
threaded post with a #6 nut.
FigureC5.0: -48VDC Dual-Source, wiring connections to the External
Terminal Block on a Magnum 48VDC with Dual-Source option
Note: The GND should be hooked up first. The 4K unit has a floating ground, so the
user may elect to Ground either + or = terminal to suit the customer’s use.
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Before connecting to Terminal block of–48VDC, 24VDC or 125VDC, always
use a digital voltmeter to measure the output voltage of the power supply and
determine the lead which is more “+ve potential”. The more “+ve” voltage lead from
48V or –48V supply must be connected to the post labeled “+”.
The connection procedure is straightforward. Simply connect the DC leads to
the Switch’s power terminals, positive (+) and negative (-) screws. The use of Ground
(GND) is optional; it connects to the chassis. Ensure that each lead is securely tightened.
The 24VDC & 125VDC terminal block on Magnum 4K-Series Switch also has
everything similar to –48VDC info. Described above.
C5.1 UL Requirements
The following must be adhered to in order to conform to UL requirements:
1. Minimum 14 AWG cable for connection to a Centralized DC power source.
2. Fastening torque of the lugs on the terminal block: 9 inch pound max.
3. Centralized DC Power Source cable securement, use at least four cable ties to
secure the cable to the rack at least 4 inches apart with the first one located
within 6 inches of the terminal block.
C6.0
ORDERING INFORMATION
To order the optional Dual-Source -48VDC power supply factory installed,
order “Dual-Src48V” as a separate line item following the product model.
Example: Magnum 4K16-48VDC
Dual-Src-48V for regular model with no ON-OFF switch
Or Dual-Src48V-SWITCH for model with ON-OFF switch
Similarly, order “Dual-Src24V” or “Dual-Src125V” as a separate line item
following the product model.
Example: Magnum 4K16-24VDC or Magnum 4K16-125VDC
Dual-Src24V for regular model with no ON-OFF switch
Dual-Src24V-SWITCH for model with ON-OFF switch
C7.0
OPERATION
Operation of the Dual-Source Magnum 4K-Series-48VDC, 24VDC &
125VDC Switch models are identical to that of the standard models.
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