Always perform a reset before setup and SOL.
I have a piece of that DX400max 50ft long I do not see that oddity.
That cable would have to be really poor to get that result.
Several possible things, adaptors, connectors, or cable was kinked.
also the load at the other end? If using a intermediate cable check
it and all adaptors.
Generally if called with a 51 ohm load and its used at the far end of the
cable its should not be as pronounced as you show.
Remotely possible is the cable is really off spec or someone substituted
75 ohm material.
Allison
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No direct email, it goes to bit bucket due address harvesting in groups.IO
