GarrettCom Quad manual C3.0 DUAL-SOURCE OPTION, Theory of Operation, C5.0 Installation

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

Magnum Quad-Series Fiber Switches

Installation and User Guide (06/03)

All Port Module options are available for configuration with Dual-Source Option units. Refer to the main sections of this Installation and User Guide for a detailed description of the Magnum Quad-Series Switches.

C3.0 DUAL-SOURCE OPTION, THEORY OF OPERATION

The Dual-Source DC power option is designed using diodes inside of the switch 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 switch. This allows the switch 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 can receive power from either input, “A” or “B”. The switch will normally draw its power from the DC source with the highest voltage at a given time.

b)The switch 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 switch.

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, 24, 100 and 125VDC dual source leads to the DC power terminal block on the Magnum Quad-Series Switch (shown in Figure C4.0 with 48v input as example).

The –48VDC terminal block on the Magnum Quad-Series Switch is located on the right rear of the unit and is equipped with five (5) screw-down lead posts (see Figure C5.0). The primary terminals are identified as positive (A+), negative (A-), and the secondary power terminals as negative (B-), positive (B+). The chassis “earth” or ground (GND), is a threaded post with a #6 nut. The dual source terminal block for 24, 100 and 125VDC are similar.

Figure on a Mag

A+ A- B- B+

36-70VDC 36-70VDC

GND

to the external Terminal Block

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Contents Fiber Switches Trademarks GarrettCom, Inc Contacting GarrettCom, IncTable of Contents IntroductionIntroduction Magnum QUAD-SERIES QPM Personal Switches, 10/100Mb Personal Hubs, 10Mb seriesTechnical Specifications Agency Approvals Ordering Information Magnum Quad-Series Port ModulesInspecting the Package and Product Product Description Magnum Quad-Series Fiber Switches Magnum Quad-Series chassis modelsPorts Table-Top Quad-port modules, 100Mb fiber Quad-port modules, 10 MbFiber QPM-RJ45 Quad-Port Module, RJ-45 copperCombo 3 + 1 Quad Port Modules, 3@RJ-45 and 1@fiber QPRJ-MSCFrame Buffering and Latency Www . GarrettCom . com „ Front-mounted LEDs, world-wide AC power supply Features and Benefits„ Plug-and-Play installation for high performance switching „ 16-port, 12-port, 8-port and 4-port modelsApplications Example 1 Magnum QS580Example 2 Magnum 8-port QS5108 Example 3 Magnum 16-port QS5116 Locating Magnum Quad-Series Switches Location of 8-port Magnum QS580’s cooling fan exhaustIeee Standard Media Type Max. Distance Port Module Fiber Connecting Ethernet MediaConnecting Fiber Optic ST-type, twist-lock CopperConnecting Fiber Optic SC-type, Snap-In Connecting Single-Mode Fiber OpticMedia Ieee Standard Table-Top or Shelf Mounting Wall or Vertical Surface Mounting, 8-port QS580Rack-mounting, models QS5108 and QS5116 Multiple Magnum QS5116 units rack-mounted in a 23 frame Jumper Settings for HDX/FDX Fiber ports, internal jumper settings Combo ports, RJ-45 and Fiber internal jumper settings Www . GarrettCom . com Powering the Magnum Quad-Series Switch 10Mbps Fiber ports internal jumper settingsQuad Port Module QPM Installation Preparation for Installing and Removing QPMsRemove Chassis Cover 1a Removing Chassis CoverInstalling QPM Cards in the Magnum Q-Series 1c Front View QPM Retaining Screws hold Face Plates2a Inserting QPM Cards into a Magnum QS5116 Removing QPM Cards 3b Removing a QPM CardSwitching Functionality Filtering and ForwardingAddress Learning PWR Status LEDsAuto-negotiation, for Fast Ethernet copper ports ACTWww . GarrettCom . com Auto-negotiation for 10 Mb ports, half- or full-duplex mode Flow-control, Ieee 802.3x standardFiber Port Module Introduction Magnum QUAD-SERIES QUAD-PORT Modules QPM Product DescriptionQPM-MST, 100Mb multi-mode FX-ST Quad-port Module, twist lock QPM-SSC 100Mbps single-mode FX-SC-type, snap-in connector 100BASE-FX Single-ModeSmall-form-factor QPM-RJ45 Twisted Pair, 10/100Mb TP Quad-Port 10/100BASE-T and 100BASE-FX Combo Quad-Port Connectors QPM-FP 10 Blank Face PlateBefore Calling for Assistance When Calling for Assistance Return Material Authorization RMA ProcedureNo Problem Found B1.0 Specifications for Magnum QUAD-SERIES Switches Power Supply Internal -48 VDC OptionShipping and Packaging Information Power Supply Internal 24 VDC Option Power Supply Internal 125 or 100VDC OptionB3.0 Applications for DC Powered Ethernet Switches B4.0 Installation B4.1 UL RequirementsB5.0 Operation B6.0 Ordering Information Magnum QS5116-125VDCC3.0 DUAL-SOURCE OPTION, Theory of Operation C4.0 Features and Benefits of the DUAL-SOURCE DesignC5.0 Installation To the external Terminal BlockExample Magnum QS5116-48VDC C5.1 UL RequirementsC6.0 Ordering Information C7.0 Operation
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