Editing 2B1Q (section)

==Encoding==
To minimize [[error propagation]], bit pairs ([[dibit]]s) are assigned to voltage levels according to a [[Gray code]], as follows:
{|class=wikitable
! [[Dibit]] !! Signal level
|-
| 10 || +450 mV
|-
| 11 || +150 mV
|-
| 01 || −150 mV
|-
| 00 || −450 mV
|}
If the voltage is misread as an adjacent level, this causes only a 1-bit error in the decoded data. 2B1Q code is not [[DC-balanced]].