sinkplaat
Junior Member level 1
- Joined
- Jun 20, 2004
- Messages
- 15
- Helped
- 0
- Reputation
- 0
- Reaction score
- 0
- Trophy points
- 1,281
- Location
- Cape Town, South Africa
- Activity points
- 144
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
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