Spectral math gating controls
Gating determines which portion of the acquired waveform is transformed into the frequency domain. The gate has a position and
a width control.
The gate position is the time in seconds from the trigger location to the center 50% position of the gate interval (see the next
figure). The position and width units are seconds.
The gate must reside within the duration interval of the source waveform. If the source waveform duration is adjusted, and the
gate position and width would result in the gate being outside of that duration, then the gate position or width is set within the
limits.
The width of the gate affects the resolution bandwidth of the spectral analyzer. Gate width has units of seconds. The resolution
bandwidth directly controls the gate width, but the numerical value is entered in units of hertz. Therefore, the time domain gate
markers move as you adjust the resolution bandwidth control.
The data contained in the gated region is transformed into the frequency domain.
The gate is identified on the display using dashed markers (similar to cursors). The default gate width setting is equal to the
duration of the source waveform.
What do you want to do next?
Go to a list of all spectral math controls.
Learn more about spectral math controls.
Go to a step-by-step procedure for defining a spectral math waveform.
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Oscilloscope reference
DPO70000SX, MSO/DPO70000DX, MSO/DPO70000C, DPO7000C, and MSO/DPO5000B Series 719
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