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Creating and Using Math Waveforms

3- 192

CSA7000B Series & TDS7000B Series Instruments User Manual

H Perform fine adjustment using the front-panel trigger level control

H Adjust the front-panel HORIZONTAL POSITION control

Using windows to filter. There are eight different spectral analyzer windows:

H Rectangular

H Hamming

H Hanning

H Kaiser--Bessel

H Gaussian

H Blackman--Harris

H Flattop2

H TekExponential

In the time domain a window is a bell-shaped function equal in length to the gate

duration. For most windows this function tapers to zero at both ends of the gate

region. Before computation of the spectral transform, the window is multiplied,

sample by sample, times the input data in the gate region. The window function

affects the shape of the spectral analyzer response in the frequency domain. The

window functions affect the ability to resolve frequency in the output spectrum

and can affect the accuracy of the magnitude and phase measurements.

Figure 3--53 shows how the time domain record is processed.

Tektronix CSA7404B User Manual

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