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Measured Beatnote
Residual Measurement Fundamentals
The Calibration Options
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.
Table 8-3
Carrier Frequency
<500 kHz
<5 MHz
<50 MHz
<250 MHz
>250 MHz
or 1/2 the frequency range of the configured analyzer, or
whichever is lower.
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).
8-16 Agilent Technologies E5500 Phase Noise Measurement System
Beatnote Frequency Ranges
Beatnote Frequency
Range
10 Hz to 10 kHz
10 Hz to 100 kHz
10 Hz to 1 MHz
10 Hz to 10 MHz
10 Hz to 50 MHz
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