Performance Tests

Test 5. Amplitude Accuracy and Linearity

completely filled in.

10Disconnect the fiber- optic cable from the optical power meter and connect it to the Agilent 86120C’s OPTICAL INPUT connector.

11Set the optical attenuator for the value that you recorded in Step 8.

12Place the polarization controller in the auto scan mode.

13Press the Agilent 86120C’s front- panel Preset key.

14Press List by Power, Appl’s, and then DRIFT.

15After two minutes, stop the polarization controller’s auto scan function.

16Press the MAX-MINsoftkey so that MAX is highlighted. Enter the maximum drift reading on the following line:

maximum drift: ____________

17Press the MAX-MINsoftkey so that MIN is highlighted. Enter the minimum drift reading on the following line:

minimum drift: ____________

18Use the values recorded in Step 8, Step 16, and Step 17 to calculate the power- correction offset value as shown in the following equation:

minimum drift + maximum drift offset = ---------------------------------------------------------------------------Pwr

2

Enter the calculate value on the following line:

power- correction offset: ____________

19Change the attenuator to the settings shown in Table 5- 21. For each setting, record the power measured on the Agilent 86120C.

After completing this step, the table’s column titled “Agilent 86120C Power Reading” should be completely filled in.

20Calculate the “Linearity” value for each row in the table using the following equation:

Linearity = Power Meter Reading 86120C Power Reading offset

21Compare the linearity values with the specification listed in Chapter 6, “Specifications and Regulatory Information”. The data may show multiple amplitude plateaus separated by small amplitude steps. This is not a problem as long as the amplitude steps are within the linearity specification.

5-10

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Agilent Technologies Agilent 86120C manual Linearity = Power Meter Reading 86120C Power Reading offset

Agilent 86120C specifications

Agilent Technologies is renowned for its innovative solutions in the field of electronic measurement and test instrumentation. Among its extensive portfolio, the Agilent 86120C stands out as a high-performance optical sampling oscilloscope designed for advanced optical communication system testing and development.

One of the key features of the Agilent 86120C is its ability to perform high-speed digital modulation analysis. With a bandwidth of up to 20 GHz, it supports a wide range of optical signals, making it ideal for testing and characterizing various optical components and systems. The device is capable of analyzing multiple modulation formats, including pulse amplitude modulation (PAM-4), making it a critical tool for engineers working on next-generation data transport technologies.

Another outstanding characteristic of the Agilent 86120C is its sophisticated optical performance monitoring capabilities. It employs advanced algorithms and techniques to provide real-time assessment of signal integrity. The oscilloscope can measure parameters such as eye diagrams, jitter, and signal-to-noise ratios, which are crucial for ensuring the reliability and performance of optical communication links.

Incorporating cutting-edge technologies, the Agilent 86120C features a high-sensitivity photodetector optimized for low-light detection and high-speed applications. This allows users to accurately capture and analyze signals, even when working with low-power transmission systems. The oscilloscope also supports multiple input channels, enabling simultaneous testing of multiple wavelengths or different signal paths.

User-friendly software is another highlight of the Agilent 86120C. The intuitive interface streamlines the measurement process and provides comprehensive data analysis tools. Users can quickly generate reports, conduct statistical analysis, and visualize data in various formats to enhance their understanding of signal behavior.

Additionally, the Agilent 86120C is equipped with connectivity options for seamless integration into larger test setups. It can easily interface with other Agilent test instruments, PCs, and networked environments, allowing engineers to create a comprehensive testing environment tailored to their specific needs.

In conclusion, the Agilent 86120C optical sampling oscilloscope combines high performance, advanced features, and cutting-edge technologies to meet the demanding requirements of optical communication testing. Its versatility makes it an essential tool for engineers working in the rapidly evolving field of data communications.