Configuring Awgn

Basic Digital Operation

Using the Dual ARB Waveform Player

Bandwidth softkey sets the bandwidth over which the noise is integrated and the Noise Bandwidth Factor softkey allows you to select a flat noise bandwidth. These softkeys are described in the E8257D/67D PSG Signal Generators Key Reference.

The following procedure sets up a carrier and modulates it using the pre- defined SINE_TEST_WFM waveform file. AWGN is then applied to the carrier.

1.Preset the signal generator. Press the Preset hardkey.

2.Press the Frequency hardkey and enter 15 GHz.

3.Press the Amplitude hardkey and enter –10 dBm.

4.Press RF On Off to On.

5. Press Mode > Dual ARB > Select Waveform and select the SINE_TEST_WFM waveform.

6.Press Select Waveform.

7.Press ARB Off On to On.

8.Press ARB Setup > ARB Sample Clock enter 50 MHz.

9.Press Real-time Noise Setup > Carrier to Noise Ratio and enter 30 dB.

10.Press Carrier Bandwidth and enter 40 MHz.

11.Press Real-time Noise Off On to On.

This procedure applies AWGN to the 15 GHz carrier. The displayed power level of the signal generator, –10 dBm, will include the noise power which is set as a carrier to noise ratio (C/N) of 30 dB. Noise power, for the purpose of C/N, is applied across a carrier bandwidth of 40 MHz. The default noise bandwidth factor is 1, which provides a flat noise signal bandwidth of a least 0.8 times the 50 MHz sample rate.

Storing and Loading Waveform Segments

Waveform segments can reside in volatile memory as WFM1 files, or they can be stored to non- volatile memory as NVWFM files, or both. To play or edit a waveform file, it must reside in volatile memory. Because files stored in volatile memory do not survive a power cycle, it is a good practice to store important files to non- volatile memory and load them to volatile memory whenever you want to use them.

Storing Waveform Segments to Non-volatile Memory

1.Press Mode > Dual ARB > Waveform Segments.

2.If necessary, press Load Store to Store.

3.Press Store All To NVWFM Memory.

Copies of all WFM1 waveform segment files have been stored in non- volatile memory as NVWFM files. To store files individually, highlight the file and press Store Segment To NVWFM Memory.

Chapter 3

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.

Agilent Technologies E8257D PSG manual Storing and Loading Waveform Segments, Configuring Awgn

Models: E8267D PSG E8257D PSG