Keysight Technologies X Series User Manual

Keysight EXG and MXG X-Series Signal Generators User’s Guide 333
Using Real–Time Phase Noise Impairments for N5172B/82B with Option 432 and 653/655/656/657
Phase Noise Shape and Additive Phase Noise Impairments
Phase Noise Shape and Additive Phase Noise Impairments
Flat mid–frequency offset
−50 dBc/Hz
−50 dBc/Hz
Keysight X-Series Phase Noise Plots Without Phase Noise Impairment
The Keysight X-Series vector signal
generator demonstrates a definitive shape to
its phase noise plot. The mid–frequency
offsets are characterized by a leveling
(flattening) of the phase noise amplitude from
approximately a 3 kHz offset to approximately
a 70 kHz offset.
Close in and far out offsets demonstrate
sloping characteristics (areas before and after
the mid–frequency offsets).
The signal generator degrades the phase noise by moving the mid–frequency
characteristics and/or changing its amplitude using the following settings:
Start frequency (f1) of the mid–frequency characteristics
Stop frequency (f2) of the mid–frequency characteristics
Amplitude (Lmid) of the mid–frequency characteristics
f1
f2
Mid–frequency characteristics
−50 dBc/Hz
−50 dBc/Hz
Amplitude
(Lmid)
This is a plot of the unmodified phase noise
shape that shows the location that each
value alters.

Keysight Technologies X Series Specifications

General

Brand	Keysight Technologies
Model	X Series
Category	Measuring Instruments
Language	English