GarrettCom Quad manual Fiber Port Module

Page 40

Magnum Quad-Series Fiber Switches

Installation and User Guide (06/03)

4.7Power Budget Calculations for Quad-Series QPM’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

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 50/125∝m (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 (Agilent’s and Siemens’) web sites and catalogs to provide guidance to network designers and installers.

Fiber

Port

Module

QPM10-

FST

QPM-

MST, MSC

QPM-SSC

QPM-

MTRJ

QPM-

MV45

Speed,

 

Std.

Wave

Cable

X’mitr

R’cvr

Worst

Worst*

 

typical

typical*

Std.

Mode

km

-

Size

Output

Sens.

OPB,

distance

 

OPB,

distance

 

fdx

length

∝m

PT , dB

PR ,dB

dB

Km, fdx

 

dB

Km, fdx

 

 

 

 

 

(hdx)

nm

 

 

 

 

 

 

 

 

10 Mb

Multi-

2

 

62.5/125

-15.0

-31

14

5

 

17

6

850

100/140

-9.5

-31

19.5

5.9

 

23.5

7

FL

mode

(2)

 

 

50/125

-19.5

-31

9.5

3.4

 

13.5

4.8

 

 

 

 

 

 

 

 

 

 

 

 

100Mb

Multi-

2

1300

62.5/125

-20

-31

9.0

2.5

 

14

5

FX

mode

(0.4)

 

50/125

-23.5

-31

5.5

2.0

 

12

4

100Mb

Single-

18+

1300

9/125

-15

-31

14

28

 

17.5

35

FX

mode

(0.4)

 

 

 

 

 

 

 

 

 

 

100Mb

Multi-

2

1300

62.5/125

-20

-31

9.0

3.0

 

15.8

5.5

FX

mode

(0.4)

 

50/125

-23.5

-31

5.5

2.0

 

12.2

4.0

 

 

 

 

 

 

 

 

 

 

 

 

100Mb

Multi-

2

1300

62.5/125

-14

-31

15

5

 

16

5.7

FX

mode

(0.4)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*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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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, 10 Mb Quad-port modules, 100Mb fiberFiber Quad-Port Module, RJ-45 copper Combo 3 + 1 Quad Port Modules, 3@RJ-45 and 1@fiberQPM-RJ45 QPRJ-MSCFrame Buffering and Latency Www . GarrettCom . com Features and Benefits „ Plug-and-Play installation for high performance switching„ Front-mounted LEDs, world-wide AC power supply „ 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 exhaustConnecting Ethernet Media Connecting Fiber Optic ST-type, twist-lockIeee Standard Media Type Max. Distance Port Module Fiber CopperConnecting Single-Mode Fiber Optic Connecting Fiber Optic SC-type, Snap-InMedia Ieee Standard Wall or Vertical Surface Mounting, 8-port QS580 Table-Top or Shelf MountingRack-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 CardFiltering and Forwarding Switching FunctionalityAddress Learning Status LEDs Auto-negotiation, for Fast Ethernet copper portsPWR 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 Return Material Authorization RMA Procedure When Calling for AssistanceNo Problem Found Power Supply Internal -48 VDC Option B1.0 Specifications for Magnum QUAD-SERIES SwitchesShipping and Packaging Information Power Supply Internal 125 or 100VDC Option Power Supply Internal 24 VDC OptionB3.0 Applications for DC Powered Ethernet Switches B4.1 UL Requirements B4.0 InstallationB5.0 Operation B6.0 Ordering Information Magnum QS5116-125VDCC4.0 Features and Benefits of the DUAL-SOURCE Design C5.0 InstallationC3.0 DUAL-SOURCE OPTION, Theory of Operation To the external Terminal BlockC5.1 UL Requirements C6.0 Ordering InformationExample Magnum QS5116-48VDC C7.0 Operation
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