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5
6
7
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 shown in
Table 31 Frequency ranges
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 0.1 Hz to 50 MHz at the phase
Agilent E5505A User's Guide
The system software will then calculate the phase detector constant
automatically using the following algorithm:
The system software will then prompt you to set the phase noise software's
meter to quadrature.
The system will now measure the noise data.
Table 31
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).
Residual Measurement Fundamentals
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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