31. Gray codes are not uniquely defined, because a permutation of the columns of such a code is a Gray code too.32. Gray codes are not uniquely defined, because a permutation of the columns of such a code is a Gray code too. 33. The gray coding may be useful if sending raw, but normally an application will just burst the bit-fields out. 34. It is a modified form of a Gray code and is sometimes referred to as a " Gray code " in avionics literature. 35. It is a modified form of a Gray code and is sometimes referred to as a " Gray code " in avionics literature. 36. In "'balanced Gray codes "', the number of changes in different coordinate positions are as close as possible. 37. The encoder uses 11 wires to pass altitude information to the transponder in the form of a Gillham Code, a modified binary Gray code . 38. With three binary digits, gray code ( or any other code for that matter ) can encode 2 3 = 8 positions at most: 39. In a mode C reply, the altitude is encoded by a " Gillham interface ", Gillham Code, which uses gray code . 40. :: : I re-read the section on single-track Gray code but still don't see how it's connected.
