RNGFND_TYPE Parameter issue

Hello,

Our team at Ainstein has developed a radar altimeter, the US-D1, which has been supported by Ardupilot for some time now. A customer has recently expressed that the device is not working with firmware 4.0.7 because the parameter RNGFND_TYPE = 33 is not being detected (as a US-D1 with CAN protocol). Could you help us to make sure our US-D1 driver is up-to-date and help us to find out what is causing this issue?

Thanks,
Camron

Can you reproduce the issue?
Can you test it on version 4.1.5?