| the value of a signal element of a uniform multivalue digital signal, with the unit of value being so chosen that adjacent values differ by one unit according to the following rules:
a) for all unbalanced signals, the lowest notional value is zero;
b) for balanced signals having an even number of permitted discrete values, the notional values are symmetrical about, but omit zero;
c) for balanced signals having an odd number of permitted discrete values, the notional values are symmetrical about, and include zero
NOTE – Examples of the notional values of uniform multivalue digital signals are as follows:
X
X
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