R&S FSPN - Noise Diagram

Measurements and Result Displays
R&S
®
FSPN
88User Manual 1179.4363.02 ─ 01
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"Current / Voltage" on page 94
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"Power vs. Frequency" on page 94
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"Harmonic Power" on page 94
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" Marker Table " on page 96
Spot noise vs tune measurements:
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"Spot Noise vs Tune PN" on page 95
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"Spot Noise vs Tune AM" on page 95
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" Marker Table " on page 96
Transient analysis
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"Frequency (Transient Analysis)" on page 95
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"Frequency Deviation" on page 96
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"Phase" on page 96
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" Marker Table " on page 96
Noise Diagram.............................................................................................................. 88
Integrated Measurements............................................................................................. 89
Spurious List................................................................................................................. 90
Spot Noise.....................................................................................................................91
Allan Variance / Allan Deviation.................................................................................... 92
Frequency (VCO Characterization)...............................................................................93
Sensitivity......................................................................................................................93
Power............................................................................................................................93
Current / Voltage........................................................................................................... 94
Power vs. Frequency.................................................................................................... 94
Harmonic Power............................................................................................................94
Spot Noise vs Tune PN.................................................................................................95
Spot Noise vs Tune AM.................................................................................................95
Frequency (Transient Analysis).....................................................................................95
Frequency Deviation..................................................................................................... 96
Phase............................................................................................................................96
Marker Table ................................................................................................................ 96
Noise Diagram
The "Noise Diagram" result display shows the power level of the noise over a variable
frequency offset from the carrier frequency.
The unit of both axes in the diagram is fix. The x-axis always shows the offset frequen-
cies in relation to the carrier frequency on a logarithmic scale in Hz. It always has a
logarithmic scale to make sure of an equal representation of offsets near and far away
from the carrier. The range of offsets that the x-axis shows is variable and depends on
the measurement range you have defined and the scope of the x-axis that you have
set.
The y-axis always shows the noise power level contained in a 1 Hz bandwidth in rela-
tion to the level of the carrier.
Result Displays