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Product Description:
The 5120A Digital Phase Noise Analyzer is not only capable of measuring phase noise but also frequency stability, phase difference, and frequency difference. It can also be used as a high-precision frequency counter. The unique patented technology of fully digitalized measurements significantly reduces measurement time and improves phase noise test accuracy compared to traditional analog phase noise analyzers. With the 5120A, there is no need for platform setup, making it easy to use and reducing testing costs.
Key Features:
● Simultaneous measurement of phase noise and Allan variance
● 1 - 30 MHz frequency range
● Instant display of measurement results without external data processing
● Leading industrial-grade accuracy (±1.0 dB)
● Measurement between different frequencies
● Allan variance measurement (up to 300 days)
● Phase noise measurement close to the carrier at 0.1 mHz
● No need for measurement calibration, saving testing time
● Real-time display of measurement results
● Optional internal reference oscillator
● Best cost-effective solution
● Intuitive remote network management and data acquisition
● User-friendly graphical user interface
● Phase noise measurement as low as -175 dBc/Hz
Quality Born from Heritage:
The 5120A is the result of over 20 years of research and exploration by Microsemi (acquired Symmetricom) in collaboration with NIST and the civilian industry. The 5120A multifunctional test instrument combines the advantages of the industry-standard Allan variance test instrument, the 5110A, with the highest level of phase noise measurement capability in the industry.
Exceptional Accuracy:
Due to the digital phase detector in the 5120A, it becomes the most accurate industrial measurement instrument. NIST has calibrated a prototype of the 5120A and confirmed its accuracy of up to ±1.0 dB, the highest in the industry. The Allan variance measurement of the 5120A also sets an industry-leading standard of <3E-15@1 second.
Wide Measurement Range Capability:
The 5120A supports phase noise and Allan variance measurements across the widest range, making it suitable for any commercial product. By converting the DUT and reference source signals into digital signals, the 5120A employs unique patented fully digitalized design, allowing phase noise measurement at the smallest frequency offset (<0.1 mHz) without the need for carrier suppression.
Additionally, this technology enables the 5120A to perform Allan variance measurements continuously for over 300 days. These technological advantages allow customers to better characterize the level of their high-performance frequency sources.
Advanced Spur Detection Technology:
The 5120A is equipped with advanced mathematical algorithms that detect and identify spurs in real-time. Through matched filtering, Fourier transformation with windowing functions, and waveform comparison of spurious signal responses, spurs are detected and highlighted in red on the display screen, as shown in the phase noise display screenshot of the 5120A. This reliable professional spur detection technology enables quick and convenient measurements.
Easy Operation:
Microsemi (acquired Symmetricom), with extensive expertise in phase noise and Allan variance measurements, has created an all-in-one solution with an intuitive and straightforward graphical user interface. The 5120A can be configured and calibrated on its own, eliminating the need for professional technicians to observe the testing process while still achieving highly accurate measurement results, saving manpower resources. As shown in the circuit connection of the 5120A-01 in the figure, connect the DUT signal to the "Input" port and press the green "Start" button, and the 5120A will automatically start the measurement.
No Requirement for the Same Frequency Point of Reference Source and DUT:
Unlike traditional measurement systems, the 5120A does not require the frequency of
the reference source to be the same as the DUT frequency. To achieve this advantage, the 5120A synthesizes two input frequencies into bandwidth.
The phase detector of the 5120A has an infinite bandwidth range and does not require phase locking between the two inputs. This means that as long as there is a low-noise reference source, precise measurements can be made at any tested frequency.
  Advantages of All-Digital Test Instrument
The 5120A combines state-of-the-art timing technology with Microsemi's patented phase measurement algorithm to create an advanced measurement device. As shown in the 5120A block diagram, the input signals from the Device Under Test and the reference source immediately enter the 5120A and are converted into digital signals by the analog-to-digital conversion circuit. This allows the 5120A to perform precise measurements without the need for external phase-locked loops or calibration. Additionally, the all-digital 5120A does not require the reference source frequency to be the same as the DUT frequency.
Cross-Correlation Technology
The parallel uplink and downlink paths shown in the 5120A block diagram illustrate the device's
cross-correlation technology. After parallel synchronous measurements, the 5120A performs discrete Fourier transforms on both measurement subsystems to evaluate the noise of the input devices and suppress the independent noise of the two measurement subsystems. This achieves measurement results that have lower noise floor and higher accuracy compared to single-channel devices.
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5120A - All-Digital, High-Performance Phase Noise and Allan Variance Analyzer, enables precise measurement of phase noise and Allan variance while simplifying operation and reducing costs. Unlike traditional analog analyzers that require external phase-locked loops, the innovative 5120A phase noise analyzer can quickly and accurately measure SSB phase noise and Allan variance with just a click of a button.
The all-digital 5120A simplifies complex setup and calibration procedures. Users only need to directly connect the Device Under Test (DUT) and the reference signal. Then, by pressing the green "Start" button on the 5120A, the high-resolution screen will display precise measurement data.
The 5120A is the result of Microsemi's (acquired Symmetricom) integration of the industry-standard Allan variance measurement device, the 5110A, into a new generation product. In addition to exceptional Allan variance measurement capabilities, the 5120A also offers phase noise measurement with an accuracy level of ±1.0 dB, previously unattainable. Combined with accurate phase noise and Allan variance measurement noise floors, the 5120A can precisely measure the lowest phase noise.
Microsemi, with its expertise in phase noise and Allan variance measurement technology, leverages the advantages of high-speed, low-noise analog-to-digital conversion technology to integrate multiple measurement tools into a single solution. This allows the 5120A to achieve more precise measurements while maintaining low costs.
Users have the option to add an internal reference oscillator to the 5120A. This all-in-one solution (5120A-01) saves time in searching for and calibrating external reference sources. With just a connection from the DUT to the 5120A-01, precise measurements can be performed.
The 5120A replaces complex and expensive measurement instruments, making measurements faster, easier, more accurate, and cost-effective.
Multiple Output Options
The 5120A caters to applications that require printing or further data analysis. By simply connecting a compatible PostScript printer to the 5120A and setting up the printer, pressing the "Print" button on the 5120A will directly print the measurement data. Measurement data can also be output to a remote computer via the Ethernet connection, allowing for import into industry-standard software such as Stable32 for frequency stability analysis.
Precision Measurement without External Reference Source
With the optional high-performance internal reference oscillator, the 5120A makes phase noise measurements easier. The device uses a method to cancel out the intercorrelation noise between two internal oscillator channels, enabling effective measurements under the noise floor of both channels. The 5120A-01 achieves precision measurements as low as -168 dBc/Hz, at a significantly lower cost compared to phase noise analyzers with similar performance parameters and external reference oscillators. There is no longer a need to spend significant time searching for and calibrating external reference sources when relying on the 5120A-01.
Performance:
Frequency Range:
1-30 MHz (sine wave)
Allan Variance:
3E-15 @ 1 sec (0.5 Hz bandwidth)
Phase Noise Characteristics:
Measurement Accuracy:
±1.0 dB
Frequency Offset Range:
0.1 mHz to 1 MHz
System Noise Floor (10 MHz input):
Frequency Offset (f) Phase Noise
1 Hz -145 dBc/Hz
10 Hz -155 dBc/Hz
100 Hz -165 dBc/Hz
≥10 kHz -175 dBc/Hz
System Noise Floor (10 MHz input) during Operation with 5120A-01 Internal Reference Source:
Frequency Offset (f) Phase Noise
1 Hz -120 dBc/Hz
≥10 kHz -168 dBc/Hz
Electrical Characteristics:
Input Signal Level:
3-17 dBm
Input Impedance:
50Ω
Input Connector:
TNC (provided with two BNC adapters)
Mechanical and Environmental Characteristics:
Dimensions:
34 cm x 17 cm x 44 cm (13" x 7" x17")
Power Supply:
100-240 VAC, 47-63 Hz, 60W (max), IEC 320 connector, power conversion
Operating Temperature:
15°C to 40°C
Storage Temperature:
-25°C to 55°C
Net Weight:
9 kg (20 lbs)
Shipping Package Weight:
12 kg (26 lbs)
Options:
Internal Reference Oscillator (5120A-01) - Factory upgrade configuration
Rackmount Kit (Option 001)
Included Accessories:
5120A test instrument, 2 TNC-BNC adapters, CD-ROM with user guide, power cord, one-year warranty
Front Panel:
Display:
High-resolution 640x480 color LCD screen
Buttons:
6 soft keys and Start, Stop, Print, Power buttons
TNC (2x):
Input, Reference (3-17 dBm)
LED:
Power status indicator
Back Panel:
USB (2x):
Supports mouse, keyboard, and compatible PostScript printers
Network:
RJ-45 10/100BaseT Ethernet
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Documentation
5120A Phase noise analyzer【PDF】data
PDF
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