The new 8-byte DIF field includes a cyclical redundancy code (CRC) to protect the data, a reference tag to protect against misdirected writes, and an application tag.
But the gates may not be practical by using the magnetic field and need rotate the field to adjust the cyclical initial states.
但是在多循环方案中不能直接用磁场来实现量子门，而需要用到旋转场的方法来调整循环初态。
3
Test and calculation explain that cyclical magnetic field disturbances of TC-1 spacecraft come from the wiring of the electric current string at the back of solar panel.