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CAUTION
Required Equipment
NOTE
Absolute Measurement Examples
Free-Running RF Oscillator
Free-Running RF Oscillator
This measurement example will help you measure the phase noise of a
free-running RF oscillator with frequency drift >20 ppm over a period of
thirty minutes.
To prevent damage to the Agilent/HP 70420A test set's hardware
components, the input signal must not be applied to the signal input
connector until the input attenuator has been correctly set for the desired
configuration, as show in
when the Connection Diagram appears.
The following equipment is required for this example in addition the phase
noise test system and your unit-under-test (UUT).
To ensure accurate measurements, you should allow the UUT and
measurement equipment to warm up at least one hour before making the
noise measurement.
Table 7-5
Equipment
Agilent/HP 8644B
Coax Cables
7-24 Agilent Technologies E5500 Phase Noise Measurement System
Table 7-7 on page
7-31. Apply the input signal
Required Equipment for the
Free-Running RF Oscillator
Measurement Example
Quantity
Comments
1
Refer to the "
"Selecting a Reference"
more information about reference
source requirements
And adequate adapters to connect
the UUT and reference source to
the test set.
Chapter 6,
for
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