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The integrate calculation is relative to the currently selected source’s

input offset. The following examples illustrate any changes in offset

level.

Integrate and Offset

•

FFT (Fast Fourier Transform) inputs the digitized time record of the source

and transforms it to the frequency domain. The FFT spectrum is plotted

on the oscilloscope display as dBV (dBV or dBm for 54610 and

54615/54616) versus frequency. Selecting this function also adds the FFT

Menu. See "FFT Measurement" later in this chapter for more information.

Press the Units/div softkey and rotate the knob closest to the

Cursors key to set the vertical sensitivity of the resulting

waveform.

Units per division changes from volts to dB when FFT is selected.

Figure 2– 1

Operating the Measurement/Storage Module

Function 2

2–6

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Agilent Technologies 54657A Betriebsanweisung Seite 22