I am having difficulties with Fathom X: initially when mounted on the ROV, connected via CAT 5 ‘tether’ (for now!) - single pair for Fathom, others unused. Power to on board Fathom X direct from battery (or bench PSU).
Surface Fathom X powered by wall wart (Raspberry Pi so capable of sufficient current).
Ethernet connection seems to come and go.
Remove electronics from ROV, powered ROV Fathom from another high power USB wart (Rasp Pi from yet another). Used new (5 metre) Cat 5 - single pair as before.
Same symptoms - unreliable connection.
When plugged directly connection is solid.
Running out of ideas - any suggestions please!