Agilent Technologies HP 8642A/B Spécifications Page 73

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Measurement Type
To select the correct type of measurement, you need to determine the type
of noise to be measured and then the technique that best suits the device
and available hardware.
Noise measurements can be categorized as either:
Phase Noise Measurements,
AM Noise Measurements, or
Baseband Noise Measurements.
Next Type
softkey to position the inverse video window at the
Press the
type of measurement you wish to perform.
NOTE
The Measurement Type that you specify will determine
which parameter entry fields appear in the remaining
Measurement Definition displays.
Phase Noise Measurements
Phase Noise Using a Phase Lock Loop measurement type is used to
measure the Phase Noise of two sources, a Reference Source and the
device under test (DUT) Source. A phase lock loop configuration is used
to maintain quadrature during the measurement. This requires that one
of the two sources is a VCO with an adequate tuning range to maintain
phase lock between the sources.
2-4 Type/Range
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