Hello, I’m working with a quadrotor powered over tether, I’m using almost 400 VDC from a ground station, on the vehicle I use a step-down converter. I want to transfer video from the quad, so my question is, can the fathom X work with 400 VDC?
Thanks in advance.
It is designed to handle 400V, and some customers have had success with this. We do not support this type of use though.
Did you end up using the fathom-x on your system?
Does it work ok?
Hello Arikarbel. I have bench tested at 350VDC (albeit with a slightly different PCB for the LX200V20) and it worked fine. I have yet to test in the water but don’t anticipate significant issues. Depending what your input filter at your step-down regulator looks like, it may be necessary to alter your input impedance. I used a 68uH/10A inductor (in parallel with a 47Ohm resistor) in series between my data connection and the input of the 500W power supply. It worked fine on the bench, but was only a test with 30m of tether. Power wires were untwisted 22AWG, voltage was just over 350. however, I use a tether with 2 twisted pairs + power, so I haven’t really needed to run this option. I am now experimenting with running the FathomX (with added zero-cross circuity) over 240VAC. I’ll post once we have some good field data. Please let us all know how your setup goes.