Programming

Example Programs

The Err_mngmt subroutine is used to actually read the value of the event status register. Examples 1 through 5 call this subroutine.

FNIdentity function

When this function is called, it resets the instrument and queries the instrument’s identification string which is displayed on the computer’s screen by the calling function. To accomplish this task, the FNIdentity function uses the *RST, *OPC?, and *IDN? common commands. This function is called from Examples 1 through 5.

Err_mngmt subroutine

This subroutine checks to make sure that no errors have set bits in the event status register and that there are no errors in the queue. Exiting this subroutine is only possible if no errors have occurred. Notice that the logic test in the subroutine tests for the same event status register bits enabled by the Set_ese subroutine: BIT(Cme,5), BIT(Cme,4), BIT(Cme,2).

This subroutine is called in Examples 1 through 5. However, it is mod- ified in Examples 3, 4, and 5 to allow it to indicate the last program- ming command that was sent to the instrument before an error occurred. This is accomplished by adding an optional argument string.

Cmd_opc subroutine

The Cmd_opc subroutine, found in Examples 3, 4, and 5, pauses the program until a non- sequential command has finished executing on the Agilent 86120C. It uses the *OPC? query.

For more information on non- sequential commands, refer to “Always force the Agilent 86120C to wait for non- sequential commands” on page 3- 12.

Tempo subroutine

This subroutine, which is only found in Example 3, pauses the pro- gram for a few seconds while the Agilent 86120C measures the drift on a laser. The argument in the example sets the pause for 10 seconds.

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Agilent Technologies Agilent 86120C manual FNIdentity function, Errmngmt subroutine, Cmdopc subroutine, Tempo subroutine

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.