[Gavin Newman]

Sounds interesting for an ROV project I am working on. Does your design incorporate limit switches to stop the drive motor at each end of the zoom?

gavin

[Gavin Newman]

Hi there,

Yes Richard thats exactly the situation.
The DGO connectors are a proprietary design of connector designed to pass the Coax signal through the housing pressure bulkhead. Once inside the cabling reverts to the common BNC for connection to the video devices.

In response to your question Maurice about the subsea cables.
Yes its the air in the standard cable that makes it unsuitable for subsea use. The cable would get crushed at depth and the isolation gap lost.
The subsea coax we will use is a 6mm diameter cable RG59 Coax. The dielectric is made of Polyethylene and the cable is jacketed with Polyurethane.

All the best
gavin

https://www.gavinnewman.com
https://www.nemo-rov.com

[Gavin Newman]

Hi Bob and Richard,

Thanks for the replies to my query and confirming my thinking.
Bob. The world of subsea cables and connectors is obviously a new world for you as indeed such things do exist. Maybe you misunderstood my application.
I have an underwater camera pod with HD camera in it and a seperate pod with fiber transmission systems etc. The two pods are fitted to a deep water robotic vehicle
https://www.nemo-rov.com
So the connectors and cable are exposed to the full pressure of the ocean at up to 500m depth. Normal BNC connectors would just flood and normal coax cable would crush. Hence the existence of subsea connectors. All the power and signal connectors on our ROV are capable of withstanding full ocean depth pressure of 6000m sea water.
For your interest details of the subsea coaxial connectors we’re proposing to use are:
https://www.dgo.com/products_coax.cfm

The nonsense is not in the marketing but in the cost!

Thanks again,

gavin