User`s guide

Table Of Contents
208 Agilent E5505A User’s Guide
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 six calibration methods available for use when making residual
phase noise measurements. They are:
User Entry of Phase Detector Constant
Measured ±DC Peak
Measured beatnote
Measured beatnote/automatic cal
Double-Sided
ΦM Spur
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 Figure 147.
Figure 147 General equipment setup for making residual phase noise measurements