Keysight Technologies N5511A, Руководство пользователя

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150 N5511A Phase Noise Test System User’s Guide
Absolute Measurement Examples
OCXO Dual Channel Measurement
OCXO Dual Channel Measurement
This measurement example will help you measure the absolute phase noise of
a stable OCXO.
Required equipment
— DUT
— References (must be tunable and at the same frequency as the DUT)
— Cables (x7) and adapters to connect DUT, reference RFs, and reference
V
tune
ports
— Keysight N5511A Phase Noise Test System
— Oscilloscope: Keysight Infinivision MSO-X 3054A (or similar with
high-impedance inputs)
— SMB-BNC cables (x2) to connect monitor outputs to oscilloscope
— Power Divider (operational at carrier frequency)
To prevent damage to the test system’s hardware components, verify that the input signal is
within the test system’s power limits. Refer to the N5511A Data Sheet online.
The most ideal references are devices that are of identical or even better phase noise
performance than the DUT. This will minimize the amount of cross-correlations needed to
measure the DUT. This example features a 10 MHz OCXO in the PSG option UNY as a DUT, using
two identical OCXOs as references.