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Re: Underwater video connector
by Bob Axtell-3
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The best way to do it is to make up the connectors as needed. Then
enclose the cable connector ends in a neoprene bag, and seal the ends
using hose clamps. But before you actually tighten the hose clamps,
fill the neoprene with kerosene (or mineral oil). Then tighten the
clamps over the bag ends.
The kerosene will prevent water from penetrating the bag, because
kerosene can't be easily compressed, even at 100' or more.
This is the method used by underwater seismic detectors, and they
operate in tough environments being dragged behind a boat.
On 6/24/09, Jinx <joecolquitt@...> wrote:
> Trying to help a friend out with a problem. He's got 50m of this cable
>
> http://www.canare.com/ProductItemDisplay.aspx?productItemID=82
>
> going to the SDI output of a camera in an underwater housing. He
> gets a very good picture with the cable connected unbroken directly
> to the camera, but he really wants this cumbersome cable removable
>
> The previous set-up was analogue video and picture quailty didn't
> suffer going through an 8-pin connector (a kind of sealable DIN)
> and short lengths of hook-up wire to the camera. The picture with
> SDI is badly torn and unstable though
>
> So we're looking for either submersible AV connectors or a way to
> use the existing connection that will either not affect the SDI or will
> buffer it. He's looked at an SDI-analogue convertor. Expensive
>
> TIA
>
> --
> http://www.piclist.com PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>--
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
enclose the cable connector ends in a neoprene bag, and seal the ends
using hose clamps. But before you actually tighten the hose clamps,
fill the neoprene with kerosene (or mineral oil). Then tighten the
clamps over the bag ends.
The kerosene will prevent water from penetrating the bag, because
kerosene can't be easily compressed, even at 100' or more.
This is the method used by underwater seismic detectors, and they
operate in tough environments being dragged behind a boat.
On 6/24/09, Jinx <joecolquitt@...> wrote:
> Trying to help a friend out with a problem. He's got 50m of this cable
>
> http://www.canare.com/ProductItemDisplay.aspx?productItemID=82
>
> going to the SDI output of a camera in an underwater housing. He
> gets a very good picture with the cable connected unbroken directly
> to the camera, but he really wants this cumbersome cable removable
>
> The previous set-up was analogue video and picture quailty didn't
> suffer going through an 8-pin connector (a kind of sealable DIN)
> and short lengths of hook-up wire to the camera. The picture with
> SDI is badly torn and unstable though
>
> So we're looking for either submersible AV connectors or a way to
> use the existing connection that will either not affect the SDI or will
> buffer it. He's looked at an SDI-analogue convertor. Expensive
>
> TIA
>
> --
> http://www.piclist.com PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
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