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Conference netcad::hub_mgnt

Title:DEChub/HUBwatch/PROBEwatch CONFERENCE
Notice:Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7
Moderator:NETCAD::COLELLADT
Created:Wed Nov 13 1991
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:4455
Total number of notes:16761

177.0. "50/125 nm fiber optical cable" by VAXRIO::CARIJO (Fernando Carijo' - SME, Rio) Thu Mar 04 1993 17:22

    
    Hello,
    
    We are selling DEFMR/DEFAR modules to a costumer that will use his
    existent fiber cables 50/125nm. I have to answre him the following
    questions :
    - What will be the maximum lenght of cable ?
    - What is the Optical Power Budget of these products ? (to calculate
      the max number of splices/panels used)
    
    Thanks in advance,
    
    			Carijo'
T.RTitleUserPersonal
Name		DateLines
177.1I have the same problem...ROMSLS::MASSAROFranco MassaroMon Sep 26 1994 09:4910
         hello,
         
         could somebody answer to the .0, please?
         
         My problem is on a FDDI connection between a 
         DECconcentrator900MX and a DECbridge900MX
         
         Many thanks
         
         Francesco
177.2SEE NOTE 1226VAXRIO::ROLFVaporware Design SpecialistTue Sep 27 1994 12:321
177.350 micron has 6 dB FDDI budgetNETCAD::KIRKtis a gift to be simpleFri Sep 30 1994 11:379
    For FDDI products, 50/125 micron optical fibers will have 5 dB LESS
    power budget than the 62.5/125 micron optical fibers. This is due to
    the smaller core diameter and lower numerical aperture.  Since the
    ANSI PMD set a requirement for 11 dB budget for 62.5/125 fiber,
    the 50/125 fiber will have a 6 dB optical power budget.
    
    
    Dick Kirk