ADInstruments AD2821A Operation Manual page 59

AD2821A OPERATION MANUAL
Figure 4-5 Absolute deviation（Δ）display mode
X − X
Δ =
x std
Where X is the measurement value, X is the standard value.
x std
4． Percent deviation（Δ%）display mode
Fixture 4-6 Percent deviation（Δ%）display mode.
X X
−
% x std 100 %
Δ = ⋅
X
std
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