Tektronix AWG610 Uživatelský manuál stáhnout pdf (Strana 446)

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Appendix F: Miscellaneous

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AWG610 Arbitrary Waveform Generator User Manual

Unlike convolution, the result of A×B and B×A are different in correlation. B×A

is calculated as follows (B and A are those from the example on page F–5):

For nonperiodic case:

A×B = b0a4,

b0a3+b1a4,

b0a2+b1a3+b2a4,

b0a1+b1a2+b2a3,

b0a0+b1a1+b2a2,

b1a0+b2a1,

b2a0,

0, (8 points)

For periodic case:

A×B = b0a0+b1a1+b2a2,

b0a4+b1a0+b2a1,

b0a3+b1a4+b2a0,

b0a2+b1a3+b2a4,

b0a1+b1a2+b2a3,

(5 points)

Waveforms A and B are regarded as periodic during calculation. The count of the

operation of sum of products is equivalent to the length of the shorter waveform.

The resulting waveform’s cycle equals the same as the longer waveform. The

actual output segment of the waveform corresponds to one cycle. The starting

point value of the waveform equals the sum of the products that is obtained with

the starting point values of waveforms A and B added.

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