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7
Residual Measurement Fundamentals
Calibrating the Measurement
In the E5505A Phase Noise Measurement System, residual phase noise
measurements are made by selecting Residual Phase Noise (without using a
phase locked loop).
There are five calibration methods available for use when making residual
phase noise measurements. They are:
• User Entry of Phase Detector Constant
• Measured ±DC Peak
• Beatnote
• Double-Sided
• Single-Sided Spur
The method used will mainly be determined by the sources and equipment
available to you.
When calibrating the system for measurements, remember that the calibration
is only as accurate as the data input to the system software. See
Source
E5505a_genl_equip_setup
27 Feb 04 rev 1
Figure 148 General equipment setup for making residual phase noise measurements
206
Φ
M Spur
Power
splitter
R
Phase
detector
L
Agilent E5505A User's Guide
Figure
148.
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