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SDS1000X HD Series User Manual
int siglent.com 143
19.3.4 Absolute
Absolute（|x|）calculates the absolute value of the selected trace.
19.3.5 Sign
In mathematics, the sign function or signum function (from signum, Latin for "sign") is an odd
mathematical function that extracts the sign of a real number.
The sign function of a real number x is defined as follows:
Sign(x) = -1 if x < 0,
= 0 if x = 0,
= 1 if x > 0.
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