Your fieldtest software could be decoding the right bsic, but display the number as a decimal. You need to convert from Decimal to Octal..
And you will notice that 49 in decimal = 61 in octal.
BUT… perhaps you’re reading 39 🙂 that is equal to 47 in octal. You MUST be reading 39 🙂
So when you define 47 in the BSIC, it will be displayed as 39 on your software, just because it is using different format.
http://www.ascii.cl/conversion.htm
The column “OCT”, see how it increases:
00, 01, 02, 03, 04, 05 , 06, 07, 10, 11, etc.
The BSIC (= NCC + BCC) is in this format.
Cheers,
Pix