Creating and Downloading User-Data Files

User File Data (Bit/Binary) Downloads (E4438C and E8267D)

Binary File Type Data

With the Binary file type, the signal generator sees all of the bytes within the downloaded file and attempts to use all of the data bits. When using this file type, the biggest challenge is creating the data, so that the signal generator uses all of the bits (bytes) contained within the file. This is referred to as using an even number of bytes. The method of creating the user file data pattern depends on whether you are using unframed or framed data. The following two sections illustrate the complexities of using the binary file format. You can eliminate these complexities by using the bit file format (see “Bit File Type Data” on page 288).

Unframed Binary Data

When creating unframed data, you must think in terms of bits per symbol; so that your data pattern begins and ends on the symbol boundary, with an even number of bytes. For example, to use 16QAM modulation, the user file needs to contain 32 bytes:

•enough data to fill 16 states 4 times

•end on a symbol boundary

•create 64 symbols (the signal generator requires a minimum of 60 symbols for unframed data) To do the same with 32QAM, requires a user file with 40 bytes.

When you do not use an even number of bytes, the signal generator repeats the data in the same symbol where the data stream ends. This means that your data would not end on the symbol boundary, but during a symbol. This makes it harder to identify the data content of a symbol. The following figure illustrates the use of an uneven number of bytes and an even number of bytes.

 

Unframed Data

MSB

LSB

Data pattern: 1 0 1 1 0 1 1 0 1 1 0 0 1 1 0 0

Uneven Number of Bytes

Data repeats during a symbol

32QAM 5 bits/symbol: 1 0 1 1 0 1 1 0 1 1 0 0 1 1 0 0 1 0 1 1 0 1 1 0 1 1 0 0 1 1 0 0 1 0 1

 

Symbol

 

Symbol

 

 

Symbol

 

 

 

Symbol

Symbol

 

 

Symbol

 

 

Symbol

 

 

 

 

 

Using an uneven number of bytes makes it harder to identify the data within a symbol.

 

 

 

 

 

 

 

 

 

 

Even Number of Bytes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Data repeats at the symbol boundary

 

16QAM 4 bits/symbol: 1 0 1 1 0 1 1 0 1 1 0 0 1 1 0 0

 

 

1 0 1 1 0 1 1 0 1 1 0 0 1 1 0 0

Data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

repeats

Symbol

Symbol Symbol Symbol

 

 

 

Symbol

Symbol

Symbol

Symbol

Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide

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Agilent Technologies N5181A/82A, N5183A MXG, E8663B manual Binary File Type Data, Unframed Binary Data
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N5183A, N5183A MXG, E8663B, N5181A/82A specifications

Agilent Technologies is renowned for its innovative solutions in electronic test and measurement equipment. Among its offerings are several signal generators including the N5181A, N5182A, E8663B, and N5183A MXG. These models are distinguished not only by their performance but also by their versatility across various applications in communications, aerospace, and electronics.

The Agilent N5181A and N5182A, part of the MXG family, are highly versatile signal generators known for their exceptional frequency performance and flexibility. The N5181A operates from 100 kHz to 6 GHz, while the N5182A extends that range up to 12 GHz. They provide high fidelity signals with low phase noise, making them ideal for the development and testing of RF components and systems. These generators support a wide variety of modulation formats, including AM, FM, PM, and pulse modulation, catering to diverse application needs.

The E8663B, meanwhile, is designed for the range of 250 kHz to 3 GHz and is also recognized for its high-performance features. Its built-in capabilities for modulation make it effective for testing wireless devices, ensuring that signals can be simulated accurately in both laboratory and field environments. It is especially beneficial for users requiring a straightforward and efficient solution with high reliability.

The N5183A MXG signal generator enhances the lineup with frequency coverage up to 6 GHz and advanced capabilities. It integrates various modulation capabilities while ensuring high signal integrity. Its architecture is tailored for both production test environments and research applications, providing users with the flexibility to adapt to changing testing requirements.

Common characteristics across these models include a user-friendly interface that simplifies configuration and operation. They are often equipped with LAN and USB interfaces for easy remote control and integration into automated test systems. The robustness of these generators allows them to perform reliably in challenging environments, making them essential tools in laboratories, manufacturing floors, and field testing scenarios.

In summary, Agilent's signal generators, including the N5181A, N5182A, E8663B, and N5183A MXG, represent a blend of advanced technology, flexibility, and precision. These instruments are vital in facilitating the evolution of cutting-edge communication technologies, ensuring that designers and engineers can confidently meet the demands of modern electronics.
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