Tektronix AWG610 Manual do Utilizador descarregar pdf (Página 428)

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Appendix D: Sample Waveforms

D-2

AWG610 Arbitrary Waveform Generator User Manual

Waveform File Descriptions

This subsection describes the 22 representative waveform files. Some of the

waveform files were obtained by creating an equation file in the equation editor

and then compiling it to create a waveform file. Others were created in the

waveform editor or disk application. To output a waveform file, select the file in

the SETUP menu.

Table D-2: Gaussian pulse

File name GAUSS_P.WFM Made with equation editor

Equation size = 640

clock = 1e9

'pulse width k0 = 30e-9

'peak location k1 = 320e-9

gauss_p.wfm" = exp(-log(2) * ((2* (time - k1) / k0) ^ 2))

Descriptions The waveform that is generated when the pulse width is tW50 and the

peak location is 0 can be expressed as:

V(t) + exp

–In(2) @

w50

F(jw) + 2p

s @ exp

–

This shows that this signal has a form in the frequency domain

as well.

f(t) + exp

–

Substituting gives,

s +

w50

2 2 In(2)

and taking the Fourier transform gives:

Example When tw50 is 30 ns, the bandwidth will be 10.4 MHz.

Settings Waveform points: 640, Clock frequency: 1.0 GHz,

Output time: 640 ns

1 2 ... 423 424 425 426 427 428 429 430 431 432 433 ... 465 466

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