Creating and Downloading User-Data Files

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

timeslots/frames

User File Bit Order (LSB and MSB)

The signal generator views the data from the most significant bit (MSB) to the least significant bit (LSB). When you create your user file data, it is important that you organize the data in this manner. Within groups (strings) of bits, a bit’s value (significance) is determined by its location in the string. The following shows an example of this order using two bytes.

Most Significant Bit (MSB)

This bit has the highest value (greatest weight) and is located at

 

 

 

 

 

 

 

the far left of the bit string.

Least Significant Bit (LSB)

This bit has the lowest value (bit position zero) and is located at

 

 

 

 

 

 

 

the far right of the bit string.

Bit Position

15 14 13 12

11

10

9

8

7

6

5

4

3

2

1

0

Data

1

0

1

1

0

1

1

1

1

1

1

0

1

0

0

1

MSB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LSB

Bit File Type Data

The bit file is the preferred file type and the easiest to use. When you download a bit file, you designate how many bits in the file the signal generator can modulate onto the signal. During the file download, the signal generator adds a 10- byte file header that contains the information on the number of bits the signal generator is to use.

Although you download the data in bytes, when the signal generator uses the data, it recognizes only the bits of interest that you designate in the SCPI command and ignores the remaining bits. This provides greater flexibility in designing a data pattern without the concern of using an even number of bytes as is needed with the binary file data format. The following figure illustrates this concept. The example in the figure shows the bit data SCPI command formatted to download three bytes of data, but only 23 bits of the three bytes are designated as the bits of interest. (For more information on the bit data SCPI command format, see “Downloading User Files” on page 296 and “Command for Bit File Downloads” on page 299.)

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

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Agilent Technologies N5183A MXG, N5181A/82A, E8663B manual User File Bit Order LSB and MSB, Bit File Type 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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