background image

Mode Conditioning Patch Cord for Gigabit-LX 

Mode Conditioning Patch Cord for 
Gigabit-LX 

The following information applies to installations in which multimode 
fiber-optic cables are connected to a Gigabit-LX port. 

Unlike Gigabit-SX, which connects to only multimode fiber-optic cabling, 
Gigabit-LX can use either single-mode or multimode cable. Multimode cable 
has a design characteristic called “Differential Mode Delay”, which requires 
that the transmission signals be “conditioned” to compensate for the cable 
design and thus prevent resulting transmission errors. Since Gigabit-SX is 
designed to operate only with multimode cable, Gigabit-SX transceivers can 
provide that transmission conditioning internally. 

Gigabit-LX transceivers and mini-GBICs, since they are designed to operate 
with both single-mode and multimode cable, do not provide the transmission 
conditioning internally. Thus, under certain circumstances, depending on the 
cable used and the lengths of the cable runs, an external 

Mode Conditioning 

Patch Cord

 may need to be installed between the Gigabit-LX transmitting 

device and the multimode network cable to provide the transmission condi­
tioning. 

If you experience a high number of transmission errors on the Gigabit-LX 
ports, usually CRC or FCS errors, you may need to install one of these patch 
cords between the Gigabit-LX port in your switch and your multimode fiber-
optic network cabling, 

and between the Gigabit-LX transmission device and 

the network cabling at the other end of the multimode fiber-optic cable run. 
A patch cord must be installed at both ends. 

The patch cord consists of a short length of single-mode fiber cable coupled 
to graded-index multimode fiber cable on the transmit side, and only multi-
mode cable on the receive side. The section of single-mode fiber is connected 
in such a way that it minimizes the effects of the differential mode delay in the 
multimode cable. 

N o t e 

Most of the time, if you are using good quality graded-index multimode fiber 
cable that adheres to the standards listed on 

page 9

, there should not be a need 

to use mode conditioning patch cords in your network. This is especially true 
if the fiber runs in your network are relatively short. 

If you are using 

single-mode 

fiber-optic cabling in your network, there is no 

need to use mode conditioning patch cords. Connect the single-mode network 
cable directly to the Gigabit-LX transceiver or Gigabit-LX mini-GBIC. 

25 

Summary of Contents for invent ProCurve J4908A

Page 1: ... excess underutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing Rentals Demos In stock Ready to ship TAR certified secure asset solutions Expert team I Trust guarantee I 100 satisfaction All trademarks brand names and brands appearing herein are the property of their resp...

Page 2: ...www hp com go hpprocurve hp procurve switch gl modules installation guide ...

Page 3: ......

Page 4: ...HP ProCurve Switch gl Modules Installation Guide ...

Page 5: ...OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE Hewlett Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services Nothing herein should be cons...

Page 6: ...twork Cables 9 Verifying the Network Connections Are Working 12 Customizing the Port Configuration 13 Replacing or Removing a Module 15 Resetting the Switch 16 Reasons for Resetting the Switch 16 Methods of Resetting the Switch 16 Troubleshooting 17 Switch and Module LED Error Indicators 17 Diagnostic Tips 17 Customer Support Services 21 Specifications 21 Environmental 21 Lasers 21 Connectors 22 T...

Page 7: ...rd for Gigabit LX 25 Installing the Patch Cord 26 Recommended Patch Cords 26 EMC Regulatory Statements 27 U S A 27 Canada 27 Australia New Zealand 27 Japan 27 Korea 28 Taiwan 28 European Community Declaration of Conformity 28 iv ...

Page 8: ...00 ohm UTP or STP cable category 5E recommended for Gigabit all ports have the IEEE 802 3ab Auto MDI MDI X feature HP ProCurve Switch Gigabit Transceiver gl Module J4864A 3 transceiver slots for installing any of the supported HP ProCurve Transceivers Supported HP ProCurve Transceivers as of this printing 100 FX Transceiver J4853A 100 1000 T Transceiver J4834A Gigabit Stacking Transceiver part of ...

Page 9: ... with MT RJ connectors for 100 Mbps networking over multimode fiber optic cable HP ProCurve Gig T mini GBIC gl Module J4908A 20portsof10 100 1000Base Twith 2 ports of mini GBIC gigabit Ethernet Supported HP ProCurve mini GBICs as of this printing Gigabit SX LC mini GBIC J4858A Gigabit LX LC mini GBIC J4859A Gigabit LH LC mini GBIC J4860A This module requires switch software version G 07 01 or late...

Page 10: ...e module and without having to shut down the switch the ports on the 10 100 TX gl Module have the HP Auto MDIX feature and the ports on the 100 1000 T gl Module have the IEEE 802 3ab Auto MDI MDI X feature These features operate the same way and allow you to use either straight through or crossover twisted pair cables for all the twisted pair network connections Please see the note on Automatic Ca...

Page 11: ...r the mini GBIC gl Module you can install the transceivers or mini GBICs in the appropriate module before or after installing that module into the switch Not e The HP ProCurve transceivers and mini GBICs can be hot swapped That is they can be installed or removed after the gl Module is installed in the switch and receiving power Please see the Installation Guide that came with the transceivers for...

Page 12: ...s Once the module is fully inserted ensure you screw in the two retaining screws to secure the module in place For safe operation proper switch cooling and reduction of electromagnetic emissions ensure that a slot cover is installed on any unused module slot For safety no more than one slot should be uncovered at a time when the switch is powered on Installation Procedures 1 Use a Torx T 10 or fla...

Page 13: ...gh insertion force is not needed and should not be used For best results push simultaneously near both screws 2 Then tighten the retaining screwsonthemoduleuntiltheyare secure but do not overtighten them The module is fully inserted when the module bulkhead is contacting or very close to contacting the face of the switch 6 ...

Page 14: ... the mini GBICs Youshoulddisconnectthenetworkcablefromthemini GBICbeforeremoving it from the module DependingonwhenyoupurchasedyourHPProCurvemini GBICs itmayhave either of three different release mechanisms a plastic tab on the bottom of the mini GBIC a wire bail or a plastic collar around the mini GBIC To remove the mini GBICs that have the plastic tab or plastic collar push the plastic tab or co...

Page 15: ...ich you are installing the module Goes ON as soon as the module is installed and the switch is powered on and stays ON steadily Self Test ON briefly while the module is being tested then OFF Note If the switch was powered off while the module was installed when the switch is powered on the Self Test LED will stay ON for the duration of the self test of the entire switch Fault OFF Link and Mode on ...

Page 16: ...e web site http www hp com go procurve Click on Technical Support and then faqs and then select the product type Supported Cable Types Module Cable Type Maximum Length 10 100 TX gl Module 10 Mbps operation category 3 4 or 5 100 ohm differential 100 meters recommended twisted pair cable with RJ 45 connector RJ 45 ports with HP Auto MDIX twisted pair cable 100 Mbps operation category 5 100 ohm diffe...

Page 17: ...it LX operation single mode fiber optic cables fitted with LC connectors multimode fiber optic cables may also be used see Fiber Optic Cables on page 24 single mode cable 10 kilometers multimode cable 550 meters Gigabit LH operation the same single mode cables as for Gigabit LX 70 kilometers Notes Gigabit LX If multimode cable is used a mode conditioning patch cord may be needed see Mode Condition...

Page 18: ...ding on the cable type and the connected device s operation As a result you can use either straight through or crossover twisted pair cable for all network connections to these modules On the 10 100 TX gl Module this feature is identified as HP Auto MDIX on the 100 1000 T gl Module it is identified as Auto MDI MDI X and it is part of the IEEE 802 3ab standard Both features operate the same Operati...

Page 19: ...to the port there may be something wrong with the cable the cable connectors or the device at the other end of the cable See the trouble shooting information on page 17 If the switch Mode is set to display activity the mode indicator LED is lit then the Mode LED for each port that is transmitting and or receiving packets will flicker when traffic is detected on the port If the Mode is set to displ...

Page 20: ...lf or full duplex and MDI or MDI X port operation Note if you configure the port to one of the fixed 100 Mbps modes the port will then operate only as an MDI X port 10 100 1000 T gl Module Auto The port auto negotiates speed 10 100 or 1000 Mbps communication mode half or full duplex and MDI or MDI X port operation Note if you configure the port to one of the fixed 100 Mbps modes the port will then...

Page 21: ...o Fiber links are expected to be trunked together The following graphic depicts the proper trunking If necessary configure the port s in the module by using the switch console or the web browser interface The command line interface CLI will provide error messages with correct groupings and disallow the trunk configuration if illegal groups exist For more information see the Management and Configur...

Page 22: ...ng another module in the slot go to Installing the Module in an Unused Slot on page 5 and begin with step 2 If you will not install another module in the slot that is leave it empty then re install a slot cover plate over the empty slot opening C a u t i o n For proper cooling and reduction of electromagnetic emissions ensure that a slot cover is installed on any unused slot 5 Reset the switch as ...

Page 23: ...e the Module Status LED for the slot will continue to flash and all the LEDs on the module will stay on continu ously Changing certain switch configuration parameters through the console interface In this case the console provides indications when the switch must be reset for the configuration change to be activated You do not need to reset the switch when Installing a module in a previously unuse...

Page 24: ... module are not operating correctly Switch and Module LED Error Indicators Fault Self Test Module Status Port Link Diagnostic Tips Flashing Flashing Flashing Never On Flashing Flashing Flashing On briefly then Off Off Off Flashing Off Flashing Flashing Flashing Flashing Off Off Off Fast Flashing Off Off On Off with cable connected The flashing behavior is an on off cycle once every 1 6 seconds app...

Page 25: ... were lit at least briefly that indicates that the module did receive power from the switch but the subsequent download process failed Either the module is faulty or it is a new module type that is not yet supported by the software on the switch As Hewlett Packard introduces new modules for your HP ProCurve Switch gl you may have to update the switch with new software that supports the new module ...

Page 26: ...C and it will be tested again If the fault indication reoccurs the mini GBIC is faulty and must be replaced If the error has occurred on an transceiver that you have installed in the Gigabit Transceiver gl Module the transceiver itself may be faulty Try removing and reinstalling the transceiver and it will be tested again If the fault indication reoccurs the transceiver is faulty and must be repla...

Page 27: ... according to the ANSI TIA EIA 568 A 5 specifications Cable testing should comply with the stated limitations for Attenuation Near End Crosstalk Far End Crosstalk Equal Level Far End Crosstalk ELFEXT Multiple Disturber ELFEXT and Return Loss The cable verification must include all patch cables from any end devices including the switch to any patch panels in the cabling path for fiber optic connect...

Page 28: ...etwork reseller can also provide you with assistance both with services that they offer and with services offered by HP Specifications Environmental Temperature Relative humidity non condensing Maximum altitude Lasers Operating Non Operating 0 C to 55 C 32 F to 131 F 40 C to 70 C 40 F to 158 F 15 to 95 at 40 C 104 F 15 to 90 at 65 C 149 F 4 6 Km 15 000 ft 4 6 Km 15 000 ft The following products ar...

Page 29: ...ccept the multimode fiber optic cables for 100Base FX described on page 24 Gigabit SX SC On the Gigabit SX Transceiver Gigabit SX LC On the Gigabit SX mini GBIC Both Gigabit SX connectors transmit at 850 nm wavelength and are compatible with the IEEE 802 3z Gigabit SX standard They accept the low metal content multimode fiber optic cables for Gigabit SX described on page 24 Gigabit LX SC On the Gi...

Page 30: ... work for 1000Base T but for the most robust connections you should use cabling that complies with the Category 5E specifications as described in Addendum 5 to the TIA 568 A standard ANSI TIA EIA 568 A 5 Because of the increased speed provided by 1000Base T Gigabit T network cable quality is more important than for either 10Base T or 100Base TX Cabling plants being used to carry 1000Base T network...

Page 31: ...ding diameter 1310 nm low metal content single mode fiber optic cables complying with the ITU T G 652 and ISO IEC 793 2 Type B1 standards OR the multimode fiber optic cables listed for Gigabit SX LC Gigabit LX mini GBIC SC Gigabit LX transceiver single mode cable 10 kilometers multimode cable 550 meters Note To use multimode cables for Gigabit LX a mode conditioning patch cord may be needed see Mo...

Page 32: ...cable to provide the transmission condi tioning If you experience a high number of transmission errors on the Gigabit LX ports usually CRC or FCS errors you may need to install one of these patch cords between the Gigabit LX port in your switch and your multimode fiber optic network cabling and between the Gigabit LX transmission device and the network cabling at the other end of the multimode fib...

Page 33: ...ord the multimode cable in the patch cord mustmatchthecharacteristicsofyour network cable single mode section plugs into Tx port on Gigabit LX Transceiver or Gigabit LX mini GBIC Make sure you purchase a patch cord that has SC connectors on the end that connects to the Gigabit LX Transceiver or LC connectors on the end that connects to the Gigabit LX mini GBIC and has multimode fibers that match t...

Page 34: ...ment This equipment gener ates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause interference to radio communications Operation of this equipment in a residential area may cause interference in which case the user will be required to correct the interference at his own expense Canada This product complies with Class A Cana...

Page 35: ...ean Community Declaration of Conformity These products are designed for operation with the HP ProCurve series 4100gl Switches Please see the Declarations of Conformity included in the Installa tion and Getting Started Guide for these switches 28 ...

Page 36: ... This page is intentionally unused ...

Page 37: ...notice Copyright 2002 2003 Hewlett Packard Development Company L P Reproduction adaptation or translation without prior written permission is prohibited except as allowed under the copyright laws Printed in Singapore November 2003 Manual Part Number 5990 3090 5990 3090 ...

Page 38: ...quipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentation Artisan Scientific Corporation dba Artisan Technology Group is not an affiliate representative or authorized distributor for any manufacturer listed herein We re here to make your life easier How...

Reviews: