For each character in the ATQB, all timing intervals calculated shall be equal to (128 * n) 1/fc +/- 2/fc.
Here is one example of the result of a failed test:
Measuring the timing interval of character 12
Character value: 73
Interval 1 = 9.218 µs
Interval 1 = 125.0 1/fc
Interval 1 is not equal to 1 * 128 ± ε
To get a pass, the timing should be between 126 * 1/fc and 130 * 1/fc.
Moreover, if at least one timing is outside of the interval, the whole CB144 test case will fail.