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High-Performance Phase Noise Test Probe

Easier, More Accurate and More Cost-Effective Measurements in One Box

The 3120A makes accurate phase-noise and ADEV measurements on signals from 0.5 MHz to 30 MHz, covering the full range of the most commonly used frequency references. The 3120A, requires an external reference and computer to be used with the 3120A Phase Noise Test Software to make ADEV and Phase noise measurements. Additionally, customers can purchase software upgrade options to make AM noise, AM Signal Statistics - HDEV, MDEV, TDEV and jitter measurements, to set test limits and to use it as a frequency counter.

Product Information

Product Information

Microsemi’s 3120A Phase Noise Test Probe makes accurate phase-noise and Allan deviation measurements on signals from 0.5 MHz to 30 MHz, covering the full range of the most commonly used frequency references. The Test Probe requires an external reference along with the 3120A Phase Noise Test Software running on an external computer to make measurements.

The 3120A Phase Noise Test Probe allows making accurate phase noise and Allan deviation measurements easier and more cost effective. The Test Probe measures the amplitude, phase and frequency stability of RF sources and two-port devices at frequencies from 0.5 MHz to 30 MHz. Measurement results can be viewed at timescales ranging from femtoseconds to days.

In addition to Phase Noise and Allan Deviation, the user has options to upgrade the test probe to take several other measurements such as HDEV, MDEV, TDEV, jitter along with using the probe as a frequency counter and set mask test limits.

The all-digital architecture employed in the 3120A uses advanced, high-speed, low-noise analog-to-digital converters in a patented architecture that does not require a phase-lock loop to make measurements. Along with the easy to use 3120A Phase Noise Test Software, customers can make measurements to characterize their references in a cost-effective manner.

The 3120A Phase Noise Test Probe needs an external reference oscillator and host PC to make measurements.

Upgrade Options

Customers can add options to the base model based on their needs and customers will be provided a software license key included with the product upon purchase based on their specific option choices.

AM Noise Measurement floor

This option allows the 3120A to measure the AM noise spectrum of the input signal. Results are displayed in dBc/Hz at offsets from 1 Hz to 100 kHz, with typical instrument noise below -165 dBc/Hz at 10 kHz (-160 dBc/Hz specified performance).

AM Signal Statistics - HDEV, TDEV, MDEV Measurement Floors and Jitter

The Signal Statistics option provides additional statistics for advanced stability monitoring and characterization. These include modified Allan deviation (MDEV), Hadamard deviation (HDEV), and time deviation (TDEV) for frequency stability measurements, as well as jitter, residual FM, and SSB carrier/noise levels between user-specified integration limits in phase noise measurements.

Frequency Counter

This option adds a real-time chart of absolute frequency measurements to the Frequency Difference graph. The chart is continuously updated at averaging times from less than one second to over 1000 seconds.

Mask Test

The Mask Test option takes the visual guesswork out of performance optimization and production testing. With this option, measurements made by the 3120A are automatically evaluated against user-definable limit lines for phase noise, AM noise, Allan deviation, and other graph types.