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Thread: Fiber Networking

  1. #21
    Member astro_boy's Avatar
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    No, it just came with the card nothing else.
    It says on it Alloy1440SCB.
    umm... whats your suggestions for the cable anything i can try.



  • #22
    Senior Member cwispy's Avatar
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    There isn't really anything you can do with the cable. Im sure that your cable is probably fine, but it just may not be the correct one for that particular card. You might have to contact Alloy support and see if they can give you the details as to cables it supports etc.
    What would you do if your server was stolen or failed beyond repair?
    http://www.2000cn.com.au/shadowprotect.html

  • #23
    Member astro_boy's Avatar
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    I don't think there is a issue with teh cables, they are brand new.
    Just nothing is going between them.
    Thanks for the help I'll see what i can do.

  • #24
    Junior Member bit_pit's Avatar
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    Well, if I am reading the Alloy site correctly, the 1440SCB is a multimode card.
    And the patch cable site seems to indicate it is a multimode fibre, although it does mention single mode in the same table.
    You could try to loop the card back on itself just to see what happens.
    I am still thinking you should see red from the TX socket on each card.
    I just went down and had a look at a few of my fibre capable boxes, I can see the TX signal easily.
    Comfortably numb...
    And NO, Google is NOT my friend...

  • #25
    Member me_ashman's Avatar
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    If you suspect the cable put a torch on the core and check the other end...no light= broken.

    What colour is the patch cable? orange or yellow?

  • #26
    Member astro_boy's Avatar
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    humm.. Still no light coming from cards.
    Did try and loop it back but nothing happend.
    do you think it is possible its just a single mode fiber im using and wont work if the
    cards trying to tx in multi?
    or that the fiber is too small.

    I put a light in the ends and could see a bit of it coming
    out other end.
    it is a yellow cable with green plugs.

  • #27
    Junior Member bit_pit's Avatar
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    Yellow is supposed to be single mode, so yes is is possible the laser emitter will not align.
    Where are you Astro? I've got a short SC MM (orange) patch I could send you to try...
    Comfortably numb...
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  • #28
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    Bit_pit, Thanks for the offer I'm on the central coast.
    But i just bought a 15m multi mode cable so i'll see how that goes!

    Have you ever heard of the light from these cards being clear and not visible to the eye ?

  • #29
    Junior Member bit_pit's Avatar
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    Well, the ones I have are visible, thats on recent Cisco switches ,a Dell Fibre switch and some other assorted bits and pieces.
    But I guess Alloy could use non-visible. I cannot remember looking at a SM link...

    Let us know how the MM cable pans out.
    Comfortably numb...
    And NO, Google is NOT my friend...

  • #30
    Member astro_boy's Avatar
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    Thanks for everyones input !

    Today I got a multimode cable and it worked straight away,
    so it wasn't the cards and from what i can see there is still no
    light coming from the cards when i try to tx data but they do work.

    This only issue now is the speeds, I'm not getting what i thought i would have which I think is due to the hardware inside the pc running a bit slow.

  • #31
    Junior Member bit_pit's Avatar
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    Very good astro, I'll stick that one in memory for the future, which with me will mean forgotten tomorrow
    Comfortably numb...
    And NO, Google is NOT my friend...

  • #32
    Member astro_boy's Avatar
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    Quote Originally Posted by bit_pit View Post
    Very good astro, I'll stick that one in memory for the future, which with me will mean forgotten tomorrow
    Hehe

  • #33
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    edit
    info FYI

    The fibre shown on the website is single mode. What colour is your patchlead? Generic colours for fibre are :

    orange 62.5 um multimode
    aqua 50 um multimode
    yellow 9 um singlemode

    but you can order leads in any colour you wish.


    General connector colour:

    Green = single mode angle polish (no good for you)
    blue = (usually single mode but can be multimode)
    beige = multimode connector

    check the writing on the cable every meter. You need a 62.5/125 um (OM1) multimode or a 50/125 um (OM3) multimode lead. If it has 9/125 um it is single mode an will not work.

    Regards

    ktm200
    Last edited by ktm200; 09-03-08 at 01:06 PM. Reason: didn't read second page

  • #34
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    fyi
    looking into fibre ports on cards an patch racks is not a smart idea

    most cards emit light in the non visible specturm ie infared
    some mostally singlemode but some multimode use laser emitters at
    850 to 1560nm

    and is like looking into a laser pointer but u cant see the light


    chears
    mat

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