Agilent Technologies HP 8642A/B Specifikace Strana 149

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Derive From Double Sided Spur
Introduction
The Derive From Double Sided Spur method is one of the most accurate
Discriminator Constant Calibration methods available for determining the
Discriminator Constant. However, it requires additional equipment and
presents a high level of technical difficulty.
This calibration method requires the generation of modulation sidebands.
The sideband (spur) level relative to the carrier level (dBc) and the spur
offset frequency must first be determined using an RF spectrum analyzer.
You must enter the relative level and offset frequency values either in the
Calibration Process display or when the Connect Diagram appears.
The HP 3048A measures the spur level at the output of the discriminator
(Phase Detector) and calculates the Discriminator Constant.
Calibr Process:
<&N
w/FM Discriminator 2-81
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