Agilent Technologies HP 8642A/B Spécifications Page 131

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Considerations for the Derive From Measured
+/- DC Peak Method
This method for determining the Phase Detector Constant provides more
accuracy than an estimated entry but less than the Beatnote, Double Sided
Spur, or Single Sided Spur methods.
The accuracy of the Phase Detector Constant using this method depends
upon the power level driving the phase detector. The phase detector
should be operated in its linear region for best accuracy. Very high
input levels are often used to maximize the system's noise floor at the
expense of driving the Phase Detector in its non-linear region. The
HP 3048A assumes the phase detector is operating in its linear region
during calibration. If the Phase Detector is operating in its non-linear
region, the Detector Constant could be slightly in error (maximum error
is w 1 dB).
2-62 Calibr Process:
3>N
w/o PLL
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