8-16
Agilent Technologies E5500 Phase Noise Measurement System
Residual Measurement Fundamentals
The Calibration Options
Measured Beatnote
This calibration option requires that one of the input frequency sources be
tunable such that a beatnote can be acquired from the two sources. For the
system to calibrate, the beatnote frequency must be within the following
ranges.
Advantages:
•
Simple method of calibration.
Disadvantages:
•
It requires two RF sources, separated by .1 Hz to 50 MHz at the phase
detector. The calibration source output power must be manually adjusted
to the same level as the power splitter output it replaces (requires a
power meter).
Table 8-3
Beatnote Frequency Ranges
Carrier Frequency
Beatnote Frequency
Range
<500 kHz
10 Hz to 10 kHz
<5 MHz
10 Hz to 100 kHz
<50 MHz
10 Hz to 1 MHz
<250 MHz
10 Hz to 10 MHz
>250 MHz
10 Hz to 50 MHz
or 1/2 the frequency range of the configured analyzer, or
whichever is lower.
