Error Messages

GPIB Messages

-121 Invalid character in number

An invalid character was found in numeric data (note, this may include and alphabetic character in a decimal data, or a "9" in octal data).

-123 Exponent too large

The exponent must be less than 32000.

-124 Too many digits

The mantissa of a decimal number can have a maximum of 255 digits (leading zeros are not counted).

-128 Numeric data not allowed

Another data type was expected for this command.

-130 Suffix error

The suffix is the unit, and the unit multiplier for the data. This error indicates that the parser has found an error in suffix but cannot be more specific.

-131 Invalid suffix

The suffix is incorrect or inappropriate.

-134 Suffix too long

A suffix can have a maximum of 12 characters.

-138 Suffix not allowed

A suffix was found where none is allowed.

-140 Character data error

This error indicates that the parser has found an error in character data but cannot be more specific.

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Agilent Technologies 8156A Invalid character in number, Exponent too large, Too many digits, Numeric data not allowed
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8156A specifications

Agilent Technologies 8156A is a high-performance optical source offering advanced capabilities for testing and characterizing optical systems. Specifically designed for applications in telecommunications and data communications, the 8156A stands out due to its precision, versatility, and reliability, making it an essential tool for engineers and researchers in the telecommunications industry.

One of the main features of the 8156A is its ability to generate a stable, accurate, and tunable optical signal. This optical source operates across a wide wavelength range, typically from 1260 nm to 1675 nm, covering key regions used in fiber optics. The tunable laser module is particularly beneficial for applications requiring the testing of fiber optic components, systems, and networks, enabling users to specify any wavelength within this range.

The device employs advanced technologies, including distributed feedback (DFB) laser technology, offering low noise and high output power while ensuring minimal phase and frequency jitter. This results in precise measurements that are crucial for evaluating the performance of optical devices. The 8156A also features a built-in optical power meter, allowing for seamless integration and real-time monitoring of optical power levels during testing.

Another significant characteristic of the 8156A is its user-friendly interface, which includes easy-to-read displays and intuitive controls. This design simplifies operation, allowing users to set up tests quickly and efficiently. Additionally, it provides various output options, including single-mode and multi-mode fiber interface compatibility, expanding its usability across different applications.

The 8156A is equipped to handle numerous protocols and systems, including passive optical networks (PON), optical transport networks (OTN), and traditional wavelength-division multiplexing (WDM) technologies. Its agility in adapting to various protocols enhances its role in research and development settings.

Moreover, the device offers a range of automation features, enabling users to script complex measurement sequences, making it an adaptable solution for both laboratory and field environments. Combined with its robust build quality, the Agilent Technologies 8156A optical source not only ensures reliable operation but also provides a long service life, making it a valuable investment for any optical testing application.
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