Think I might have something here! So I started reviewing the def files you gave me here and found that test 3 and 4 were giving 0 or .10 hertz but no data errors (no data either though). Test 2 was giving the same problem as the others. I compared briefly 2 to 3 and saw that adx header connection on test 2 wasn't set to corvette connection like test 3 was. Changed that and bam works everytime so far! What else should I explore with this file to test functionality of scanning?