Old Mill Fibre Connection
Hi
Having difficulty connecting a fibre cable in an old Mill. Fibre Cable could be 15-20 years old. It has male SC connectors at each end, which go into an 10/100 TX to FX Ethernet converter, with a single Ethernet port. These units are old and the power supply on it has failed a few times.
I am replacing these units with 2 x Zyxel GS1900 10H using some HP transceivers with LC connections.
I bought some LC to SC male to male fibre patch cables and 2 x SC to SC female couplers. When I connect both switches together on a table using the 2 patch leads and one coupler everything works, lights on both fibre modules on the switch are working and connection is good.
However, when I put the setup in the mill it doesn't work. Tried reversing A & B at either end, but no light comes on the switch for the transceivers. Put back the old modules and all OK. Any help much appreciated.
Having difficulty connecting a fibre cable in an old Mill. Fibre Cable could be 15-20 years old. It has male SC connectors at each end, which go into an 10/100 TX to FX Ethernet converter, with a single Ethernet port. These units are old and the power supply on it has failed a few times.
I am replacing these units with 2 x Zyxel GS1900 10H using some HP transceivers with LC connections.
I bought some LC to SC male to male fibre patch cables and 2 x SC to SC female couplers. When I connect both switches together on a table using the 2 patch leads and one coupler everything works, lights on both fibre modules on the switch are working and connection is good.
However, when I put the setup in the mill it doesn't work. Tried reversing A & B at either end, but no light comes on the switch for the transceivers. Put back the old modules and all OK. Any help much appreciated.
Do you know what type of fiber the old run is? Did you match that up with your patch cables and transceiver?
ASKER
No I don't. But there was another fibre network segment running to a shop. and that one worked OK. running the same HP transceivers and patch cable.
You need to find out if the fiber is single mode or multi mode. It is often printed on the jacket. Take a look. If you see something on the jacket but are not sure, post an image and we'll see if we can help.
You can also look at the media converter as it is going to be specific to a protocol. Can you post the model of the old media converter?
You can also look at the media converter as it is going to be specific to a protocol. Can you post the model of the old media converter?
ASKER
Says Multi mode on the back
Are you transceivers and patch cables multi mode?
ASKER
ASKER
Should be, other fibre segment had the same old boxes' and I swapped them out last year using the same HP transceivers. Only difference this time is that the hub is a Zyxel,
This hub happens to be POE, but that should not affect the fibre connection.
This hub happens to be POE, but that should not affect the fibre connection.
Are you changing speed? Perhaps the fiber is damaged or needs to be cleaned or reterminated. You may want to get a cabling company to come out to test and reterminate the line.
ASKER
No, not damaged as it works fine with the original old media converter.
Are you changing speed? ie. are you going up to a gigabit? The supported distance drops significantly if you move to a gigabit.
https://en.wikipedia.org/wiki/Multi-mode_optical_fiber
https://en.wikipedia.org/wiki/Multi-mode_optical_fiber
ASKER
Yes we are going up to gigabit, but the distance is short (for Fibre), around 300meters.
ASKER
Dose anyone know if I should be connecting A to A or crossover A to B as it is going from a switch to a switch?
OK, now we get into exactly what type of multimode fiber you have. It needs to be at least OM2. If not then 300m is too long of a distance.
ASKER
I'll go back there see if I can get some pictures of the main fibre cable.
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