GarrettCom 6K25e manual C4.0 Features and Benefits of the DUAL-SOURCE Design, C5.0 Installation

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GND
B-
B+
A-
A+
CHASSIS
GND
+
- FUSE
HUB
SUPPLY

Magnum 6K25e Gigabit Fiber Switch

Installation and User Guide (10/07)

With the exception of the dual DC input power connections and the power supply, all specifications and configuration options for the Magnum 6K25e -48VDC, 24VDC and 125VDC models with this Dual-Source option are identical to those listed in the Magnum 6K25e Fiber Switches Installation and User Guide, including Appendix B “Internal DC Power Supply Option”

C2.0 MAGNUM 6K25E, with -48VDC, 24VDC and 125VDC Dual-Source option The 6K25e-Switch models with the internal -48VDC, 24VDC and 125VDC

Dual-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 6K25e Switch -48VDC, 24VDC and 125VDC Dual-Source Option units is 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 6K25e 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 terminals) so that power from an external source

can only flow into the unit. This allows the unit to operate whenever DC power is correctly applied to either or both of the two inputs

C4.0 FEATURES AND BENEFITS OF THE DUAL-SOURCE DESIGN

a)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.

b)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.

c)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.

d)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.

e)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 and 125VDC dual source leads to the -48VDC, 24VDC 7 125VDC power terminal block on the Magnum 6Ks Switch (shown in Figure )

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Contents Gigabit Fiber Switch Trademarks Canadian Emission Contacting GarrettCom, IncIntroduction Table of ContentsRevisions 6K25E Managed Fiber Switch Port ModulesMagnum Line Maximum 10 Mbps Ethernet Segment Lengths Technical SpecificationsPerformance Network Standards and Compliance, hardwarePower Supply Internal Fiber Multi-mode connector types supportedFiber Single-mode connector types Management Console connectorAgency Approvals Alarm Contact OptionalNebs Testing and Certification Nebs certified Per-port MDI or Mdix on RJ-45Ordering Information 6K PoE Modules with 48VDC Pass-Through For Gigabit module configuration options6K PoE Modules with 48VDC Power Inside Introduction Inspecting the Package and Product Product Description Magnum 6K25e Managed Fiber SwitchWww . GarrettCom . com Eight-port SFF fiber modules 6K8-MTRJ, 6K8-MLC, 100Mb fiber Magnum 6K25e and 6K25eR chassisPort modules for the Magnum 100Mb fiber eightEight-Port Copper Module, 6K8-RJ45 The 6K25e-Series’s8-port New PoEPower Inside, model PI6KP8-45RJ MDIX, 10/100Mb 8-port Per the IEEE802.3af PoE Four-Port 10 Mb mm Fiber ST Modules Gigabit 1000Mbps port modules Frame Buffering and Flow Control Packet Prioritization, 802.1p QOSWeb-browser, at ftp//ftp.garrettcom.com Managed Network Software MNS-6K for Magnum 6K25e-Series„ Features Fiber-Built-In „ Managed switching for high performance Ethernet LANs„ Nebs and Etsi tested and certified „ SFP Gigabit module being supported on Slot D „ RJ-45 ports are MDI/MDIX supportedApplications 6K 25e Locating Magnum 6K25e Switches InstallationCopper Connecting Ethernet MediaConnecting Fiber Optic ST-type, twist-lock Ieee Standard Media Type Max. Distance Port Module FiberConnecting Single-Mode Fiber Optic Connecting Fiber Optic SC-type, Snap-InMedia Ieee Standard Media Ieee Standard Gigabit SFP Small Form-factor Pluggable Optical Transceivers Side View Duplex LC connector Front viewSFP-SX SFP-LX10 SFP-LX25 SFP-ZX40 SFP-ZX70 Table-Top or Shelf Mounting1 Mountings for Magnum 6K25e units rack-mounted in a frame Rack-mounting for 19 Retma racks, regular Magnum 6K25esRack-mounting, Reverse version of the Magnum 6K25es Powering the Magnum Managed Fiber SwitchWww . GarrettCom . com Preparation for Installing and Removing 6KPMs 6K25e Port Module 6KPM InstallationRemove Chassis Cover 1a Removing Chassis Cover Installing 6KPM Cards in the Magnum 6K25e Uplink 2f Securely latching up 6KPM Cards into a Magnum 6K25e Removing 6KPM Cards Console DB-9 Port Connecting the Console Terminal to Magnum 6K25e ManagementRemove 6KPM Card 1 RS-232 DB-9 Console Com port Serial port pin assignments Pin Signal DescriptionSwitching Functionality DB-9 Console port connectorACT Status LEDsUp-link MDI-MDIX on RJ-45 port modules, for port 1 only PWRAuto-CrossMDIX and Auto-negotiation, for RJ-45 ports Flow-control, Ieee 802.3x standard F10ST Introduction Magnum 6K25e Managed Fiber Switch Port Modules 6KPM Module Description 1b 6KP4-F10ST, 4@10Mb multi-mode FX-ST twist lock Module @10Mb @100Mb Multi-mode FX-ST twist 1c 6KP4Lock Module Transceivers all in one module. This Mode 100Mbps fiber opticMode SC-type connectors. It Provides an advantage Fiber functions in one Module of the 6K25e SwitchWww . GarrettCom . com Activity FULL/HALF Port@ 100Mbps Multi-Mode Fiber portLink Form Factor 9 6KP8-RJ45 Twisted Pair, 10/100Mb 8-Port Option in one 6K-unit Fig. the top 8-RJ45 PoE LEDs Summary10/100 GBIC-SXSC Gigabit fiber1000Mb, multi-mode SC Connector Before Calling for Assistance 14 6KM-BLNKReturn Material Authorization RMA Procedure When Calling for AssistanceShipping and Packaging Information No Problem Found Specifications for Magnum 6K25E SWITCHES, DC Power Appendix B Internal DC Power Supply Options B3.0 Applications for DC Powered Switches Magnum 6K25es. see figure at right B4.0 InstallationB5.0 Operation Appendix C Internal DC Dual-Source Power OptionB4.1 UL Requirements for DC-powered units B7.0 TroubleshootingC5.0 Installation C4.0 Features and Benefits of the DUAL-SOURCE DesignExample Magnum 6K25eR-24VDC or Magnum 6K25eR-125VDC C5.1 UL RequirementsC6.0 Ordering Information Example Magnum 6K25eR-48VDCOperation C7.0
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