The Phase Lock Loop Technique - Agilent Technologies E5500A User Manual

Absolute Measurement Fundamentals

The Phase Lock Loop Technique

The Phase Lock Loop Technique
The phase lock loop measurement technique requires two signal sources; the
source-under-test and a reference source. This measurement type requires
that one of the two sources is a voltage-controlled-oscillator (VCO).
You will most likely use the phase lock loop technique since it is the
measurement type most commonly used for measuring signal source
devices. This chapter focuses on this measurement type for signal source
measurements.
6-2 Agilent Technologies E5500 Phase Noise Measurement System