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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

1065.0. "DECbridge 900MX distance capabilities" by DECPRG::PAVLUP () Fri Jun 03 1994 03:12

Hi,

I see some inconsistencies in what's written in our documentation about
DECbridge 900MX.

DB900MX is a MMF-equipped device, so I'd assume the distance it can
span should be up to 2 km. However, in the U.K. DECdirect (April 94), a table
on page 41 says that it is capable of spanning distances of up to 10 km.

A customer is questioning this point... We can be safe stating 2 km, but what
if we really can do more (???). Actually, the customer has 50/125 fiber and
pursues a solution for cca 8.5 km distances.

Please clarify for me this point (including the fiber parameters, if any
dependency exists).

Regards

Petr.
T.RTitleUserPersonal
Name		DateLines
1065.1Can't push light that far.CGOS01::DMARLOWEHave you been HUBbed lately?Fri Jun 03 1994 10:288
    The ports comply with MMF spec meaning 2KM.  Distances may be a
    little longer or shorter depending on fiber size and the number
    of patch cables and splices.  You will not be able to strech that
    to 8KM.
    
    You will need a DECconcentrator 900 with SMF ports.
    
    dave
1065.2Thanks for confirmingDECPRG::PAVLUPFri Jun 03 1994 11:356
Thanks for clarification.

That's what has been expected...

Petr.