Here is what happen. I had a pixhawk from radiolink. Barometer went bad and their support wanted as much as a new one to fix the old one. I bought another pixhawk which was labeled pixhawk 2.4.8 on the unit. Using the same connections I had for the previous pixhawk from the minum osd I now do not see any osd data on the monitor where I did have before with the other pixhawk. I believe the pinouts are the same. I checked the osd with the ftd and the set up is good. Anyone have any insight where to look? Mission planner configuration is the same as before. I kept screen shots of the settings so I could easily set the replacement pixhawk up.