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7
Absolute Measurement Examples
Stable RF Oscillator
Stable RF Oscillator
Required Equipment
7-2
E5500 Phase Noise Measurement System Version A.02.00
This measurement example will help you measure the phase noise of
a stable RF oscillator with frequency drift of <20 ppm over a period
of thirty minutes.
CAUTION:
To prevent damage to the Agilent 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
shown in
Table
7-3. Apply the input signal when the connection diagram
appears.
Table 7-1
shows equipment required for this example in addition to
the phase noise test system and your unit-under-test (UUT).
NOTE: 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 7-1
Required Equipment for the Stable RF Oscillator Measurement
Example
Equipment
VCO Reference Source
Coax Cables
Quantity
1
Document Part No. E5500-90024 Ed. 1.0
Comments
Refer to
Chapter
6,
"Selecting a
Reference" for more
information about
reference source
requirements
And adequate
adapters to connect
the UUT and reference
source to the test set.
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