[renee litapop] “ut I’m concerned that the broadcaster will see that the data rate number looks too low and will reject it.”
XDCAM HD 422 is a locked down specification. There are no settings to set. It will be to format specs. There can be other issues that aren’t format related like out of gamut colors, wrong audio levels etc. I’ve delivered hundreds if not a thousand files in this spec and none of them have had any issues with bit rate. If they have an automated QC-check they will let you know if/what you need to fix.
QC is a very specialized field with really expensive solutions but there are some free ones like MediaArea’s QCtools.