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Figure 8-16 Calibration Setup
Table 8-7
Acceptable Amplitude Ranges for the Phase Detectors
Phase Detector
50 kHz to 1.6 GHz
Document Part No. E5500-90024Ed. 1.0
Broadband couplers with good directivity are available, at
reasonable cost, to couple in the calibration spur.
Disadvantages:
Requires a second RF sources that can be set between 10 Hz and up
to 50 MHz (depending on the baseband analyzer used) from the
carrier source frequency.
Requires an RF spectrum analyzer for manual measurement of the
signal-to-spur ratio and the spur offset frequency.
Procedure
1
Connect circuit as per
Note that the input signal into the directional coupler is being
supplied to the coupler's output port.
2
Measure the power level that will be applied to the Signal Input
port of the Agilent 70420A's Phase Detector. The following chart
shows the acceptable amplitude ranges for the Agilent 70420A
Phase Detectors.
1.2 to 26.5 GHz
E5500 Phase Noise Measurement System Version A.02.00
Residual Measurement Fundamentals
Figure
8-16, and tighten all connections.
*
8
Calibration Options
8-23
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