sinkplaat
Joined: 20 Jun 2004
Posts: 15
Location: Cape Town, South Africa
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 28 May 2008 9:33 Need help matching CAT5 to 4-core instrument cable. |
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Hi all,
I have a setup where a Power Over Ethernet Network is connected to a towed instrument vechile behind a ship. The length of the cable can be up to 3km's long. The Ethernet extender works fine with CAT5 cable at these lengths, but not with the armored 4-core cable used in maritime applications.
The maritime cable has a typical capacitance of 20uF/1km @kHz between cores and a DC resistance of 188Ohms/km.
The CAT5 spec calls for a DC loop resistance of <188Ohm/km and a capacitance of 200pF/twisted pair/km.
My question:
Would it be possible to build a matching network that would match the Ethernet extender and receiver to the maritime cable? If so, what would be the design methology/steps be that I would need to follow?
Any advice would be greatly appreciated.
Best regards,
André
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