Tektronix AWG610 Manuel d'utilisateur Page 442

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Appendix F: Miscellaneous
F-2
AWG610 Arbitrary Waveform Generator User Manual
In actual practice, when function f(x)is expressed by n values, the differential
value f’(x
i
) at point x
i
is given by the following equation:
Ȁ(
+
NJ
(
)1
) (
1
Nj
Here, “n” is the number of waveform points and “i” is an integer in the range,
i=1, 2, ..., n.
f(x
i
)
x
i
x
n
n
x
f(x
i+1
)
f(x
i–1
)
n
x
Figure F-1: Equation differentiation
The values at the first and last points are obtained from the following equations
rather than from the center deviation:
First point
Ȁ(
1
+
NJ
3 (
1
) ) 4 (
2
) (
3
Nj
Last point
Ȁ(
+
NJ
(
2
)4 (
1
) ) 3 (
Nj
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