Agilent Technologies HP 8642A/B Specifiche Pagina 130

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Derive From Measured +/- DC Peak
Introduction
The Derive From Measured +/ DC Peak selection configures the system
to measure the positive and negative peak voltages out of the phase
detector. The measured + / DC Peak voltages out of the phase detector
are averaged to determine the Phase Detector Constant (Peak volts
Detector Constant in V/Rad.)
This method requires a phase shifter, or an
RF
source capable of tuning the
phase detector through 360° of phase shift to achieve the maximum and
minimum dc voltages. The system will prompt you to adjust the phase.
One of the advantages of using this method of calibration is that the phase
detector is calibrated using the same equipment used for the measurement.
Manual operation of the equipment may be required, however.
n
LINE STRETCHER DUT
SOURCE f
POWER
SPLITTER
0
HP 3048A
Figure 2-18. +/ DC Peak Setup Diagram
Calibr Process: $N w/o PLL 2-61
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