Tektronix MSO64 — руководство по использованию курсоров в спектровом анализе [456/628]

Spectrum cursors guidelines.

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Spectrum View only supports waveform cursors.

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Cursor readouts only appear in the selected spectrum slice. The cursor bar extends through all slices (similar to waveform

cursors in Stacked Waveform View slices).

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Cursors maintain their screen position if you change the center frequency or span.

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Cursor measurements are taken on the currently selected trace (Normal, Average, Max Hold or Min Hold) which is

indicated by the MANm trace handle. See Spectrum trace handle and trace types on page 147.

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Cursor A becomes the Reference marker. The cursor A readout shows Frequency, Amplitude and Noise Density values.

The automatic peak markers still show the same number of peaks as before, but they use the cursor A reference marker for

delta measurements.

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The cursor B readout depends on the Absolute/Delta mode:

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When cursor readouts are set to Absolute mode, the cursor B readout shows Frequency, Amplitude, and Noise

Density values.

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When cursor readouts are set to Delta mode, the cursor B readout shows the delta Frequency from cursor A, the delta

Amplitude from cursor A, and the Phase Noise of cursor B relative to cursor A (dBc/Hz).

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Split cursors readouts only display frequency readouts when the cursor sources are using different vertical units.

Spectrum badge menu

Use the Spectrum badge menu to set spectrum parameters including source, center frequency, span, RBW, FFT window type,

and spectrum time.

NOTE. Spectrum View is standard in 5/6 Series MSO instruments. Spectrum View is an option in 4 Series MSO instruments.

To open the Spectrum badge menu, double-tap the badge.

Menus and dialog boxes

426 4/5/6 Series MSO Help