Custom Arb Waveform Generator

Working with Modulation Types

5.Press the Delete Row softkey 16 times.

Repeat this pattern of steps using the following table:

Goto Row...

 

 

Press the Delete Row softkey...

 

 

 

 

0110 0000

(96)

16

times

 

 

 

 

1001 0000

(144)

16

times

 

 

 

 

1100 0000

(192)

16

times

 

 

 

 

0001 0000

(16)

4

times

 

 

 

 

0001 0100

(20)

4

times

 

 

 

 

0001 1000

(24)

8

times

 

 

 

 

0011 0000

(48)

4

times

 

 

 

 

0011 0100

(52)

4

times

 

 

 

 

0011 1000

(56)

4

times

 

 

 

 

0101 1000

(88)

8

times

 

 

 

 

0111 0000

(112)

4

times

 

 

 

 

0111 0100

(116)

4

times

 

 

 

 

0111 1000

(120)

8

times

 

 

 

 

 

 

6.Press Display I/Q Map to view the new constellation that has been created. The I/Q State Map in this example has 128 symbols.

7.Press Return. When the contents of an I/Q Values table have not been stored, I/Q Values (UNSTORED) appears on the display.

8.Press More (1 of 2) > Load/Store > Store To File.

If there is already a file name from the Catalog of IQ Files occupying the active entry area, press the following keys:

Editing Keys > Clear Text

9.Enter a file name (for example, 128QAM) using the alpha keys and the numeric keypad.

10.Press Enter.

The user- defined I/Q State Map should now be stored in the Catalog of IQ Files.

Creating a QPSK I/Q Modulation Type User File with the I/Q Values Editor

In I/Q modulation schemes, symbols appear in default positions in the I/Q plane. Using the I/Q Values editor, you can define your own symbol map by changing the position of one or more symbols. Use the following procedure to create and store a 4- symbol unbalanced QPSK modulation.

1. Press Preset.

Chpater 6

157

Page 170 Page 172
Page 171
Image 171
Agilent Technologies E8257D PSG, E8267D PSG manual Press More 1 of 2 Load/Store Store To File, Editing Keys Clear Text
Page 170 Page 172

E8267D PSG, E8257D PSG specifications

Agilent Technologies, a recognized leader in electronic measurement and communications solutions, offers a comprehensive range of signal generators, including the E8257D PSG (Pulsed Signal Generator) and E8267D PSG. These instruments are engineered to meet the demanding requirements of wireless communication, aerospace, defense, and various research applications.

The E8257D PSG is known for its versatility and reliability. It operates within a frequency range of 250 kHz to 40 GHz, making it suitable for a wide array of applications, from signal generation to vector modulation. With an output power capability of up to +30 dBm, it delivers high-quality signals with exceptional precision. Its low phase noise performance is especially critical for applications such as radar and communication system testing, where signal integrity is paramount.

One of the standout features of the E8257D is its advanced modulation capabilities, including analog and digital modulation schemes. This flexibility allows engineers to simulate real-world communications environments accurately. The PSG also features a built-in arbitrary waveform generator that enables users to create complex waveforms tailored to specific testing needs, providing a significant advantage in research and development.

On the other hand, the Agilent E8267D PSG is designed to cater to the needs of users requiring a combined signal generation and analysis solution. With the capability to generate signals from 250 kHz to 67 GHz, the E8267D is ideal for millimeter-wave applications, as well as testing next-generation wireless technologies.

This model includes features such as enhanced phase noise performance and faster switching speed, which are crucial for signal integrity in sophisticated networks. The instrument's intuitive user interface and powerful software integration facilitate effortless operation and automation, thereby improving workflow efficiency.

Both the E8257D and E8267D PSG instruments incorporate cutting-edge technologies such as low-noise microwave and RF components, as well as digital signal processing capabilities. They provide users with enhanced accuracy and reliability in their measurements.

In summary, Agilent Technologies' E8257D and E8267D PSG signal generators represent the pinnacle of precision in signal generation technology. With their extensive feature sets, advanced modulation capabilities, and robust performance specifications, these instruments are invaluable tools for engineers and researchers working across various high-tech industries.
Top Page Image Contents