The Phase Noise application measures the phase noise of a DUT's output signal within a specified offset frequency range.
In this topic:
Absolute Phase Noise measurements
AM noise measurement
Spur identification and removal
Automatic carrier search
Segment Sweep
How to start Phase Noise |
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Using Hardkey/SoftTab/Softkey |
Using a mouse |
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The Phase Noise application measures the power density of the noise sideband relative to the power of the carrier over a start/stop offset frequency. The offset frequency corresponds to the distance from the carrier frequency. The log-transformed phase noise is displayed in dBc/Hz.
The bottom of the display area shows the carrier frequency, carrier power, and the Phase Noise start and stop offset frequencies. The x-axis is the offset frequency range displayed on a logarithmic scale to allow viewing the full offset range.
If the sweep time is greater than 2 seconds, a sweep indicator is displayed at the bottom of the display area to provide sweep time percentage complete:
Noise tables showing Spurious, Integrated Noise, and Spot Noise data can be displayed below the trace area.