| Title: | DEChub/HUBwatch/PROBEwatch CONFERENCE |
| Notice: | Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7 |
| Moderator: | NETCAD::COLELLA DT |
| 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 |
Hello ! What are the specs. for Single Mode Fiber PMD for the DECconcentrator 900. Fiber budget ? Transmitter/Receiver sensitivity? Max. Cable lenght? Jouko
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 1731.1 | NETCAD::KIRK | tis a gift to be simple | Wed Nov 30 1994 15:28 | 12 | |
The fiber budget for our Single-mode fiber PMD is 22 dB.
The transmitter output power is a minimum of -8 dBm.
The receiver sensitivity is a minimum of -30 dBm.
Fiber cable length maximum:
we advertise 40 kilometers, but we have approved up to 60 km. The
system is limited by fiber loss more than by fiber dispersion.
Richard Kirk
Network Product Support Engineering
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| 1731.2 | One more detail | NETCAD::KIRK | tis a gift to be simple | Wed Nov 30 1994 15:29 | 5 |
Also, there is a minimum loss requirement of 12 dB. So the loss budget
is really 12 to 22 dB.
Richard Kirk
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| 1731.3 | Thanks !!!! | EEMELI::SOHLMAN | Jouko Sohlman , NIS Helsinki Finland | Thu Dec 01 1994 01:25 | 0 |