Manuals / Agilent Technologies / Lawn and Garden / Portable Generator

Agilent Technologies E8247C PSG CW, E8267C PSG, E8257C PSG To Level with a mm-Wave Source Module

Models: E8267C PSG E8247C PSG CW E8257C PSG

1 220
Download 220 pages 10.54 Kb
Page 73
Image 73

Optimizing Performance

Using External Leveling

External Leveling with Option 1E1 Signal Generators

Signal generators with Option 1E1 contain a step attenuator prior to the RF output connector. During external leveling, the signal generator automatically holds the present attenuator setting (to avoid power transients that may occur during attenuator switching) as the RF amplitude is changed. A balance must be maintained between the amount of attenuation and the optimum ALC level to achieve the required RF output amplitude. For optimum accuracy and minimum noise, the ALC level should be greater than −10 dBm.

For example, leveling the CW output of a 30 dB gain amplifier to a level of −10 dBm requires the output of the signal generator to be approximately −40 dBm when leveled. This is beyond the amplitude limits of the ALC modulator alone, resulting in an unleveled RF output. Inserting 45 dB of attenuation results in an ALC level of +5 dBm, well within the range of the ALC modulator.

NOTE

In the example above, 55 dB is the preferred attenuation choice, resulting in an ALC level

 

of +15 dBm. This provides adequate dynamic range for AM or other functions that vary the

 

RF output amplitude.

 

 

To achieve the optimum ALC level at the signal generator RF output of −40 dBm for an unmodulated carrier, follow these steps:

1.Press Amplitude > Set Atten > 45 > dB.

2.Press Set ALC Level > 5 > dBm.

This sets the attenuator to 45 dB and the ALC level to +5 dBm, resulting in an RF output amplitude of -40 dBm, as shown in the AMPLITUDE area of the display.

To obtain flatness-corrected power, refer to “Creating and Applying User Flatness Correction” on page 64.

To Level with a mm-Wave Source Module

Millimeter-wavesource module leveling is similar to external detector leveling. The power level feedback signal to the ALC circuitry is taken from the millimeter-wave source module, rather than the internal signal generator detector. This feedback signal levels the RF output power at the mm-wave source module output through the signal generator’s rear panel SOURCE MODULE interface connector.

For instructions and setups, see “Extending the Frequency Range with a mm-Wave Source Module” on page 47.

Chapter 3

63

Page 72 Page 74
Page 73
Image 73
Agilent Technologies E8247C PSG CW, E8267C PSG, E8257C PSG manual To Level with a mm-Wave Source Module
Page 72 Page 74

E8267C PSG, E8247C PSG CW, E8257C PSG specifications

Agilent Technologies, a leading provider of electronic test and measurement equipment, offers a range of signal generators that are pivotal in various applications, including telecommunications, aerospace, and research. Among their top-tier offerings are the E8257C PSG, E8247C PSG CW, and E8267C PSG. These signal generators are known for their exceptional performance, flexibility, and cutting-edge technologies.

The E8257C PSG is a high-performance microwave signal generator capable of generating signals from 10 MHz to 40 GHz. Its versatility makes it ideal for applications such as radar and satellite communications. One of the standout features of the E8257C is its low phase noise and superior output power, which ensure high-quality signal generation. The instrument incorporates advanced digital signal processing technology, allowing users to create complex modulated signals with precision. It also boasts a comprehensive set of modulation formats, including AM, FM, PM, and pulse modulation, making it suitable for diverse testing scenarios.

The E8247C PSG CW is designed specifically for continuous wave (CW) applications, covering frequencies from 500 kHz to 20 GHz. This generator is optimized for high stability and low output noise, making it ideal for applications that require a reliable signal source, such as manufacturing testing and maintenance of communication systems. The E8247C features a compact design and is equipped with an intuitive user interface, allowing quick access to essential functions. Its frequency agility and fast switching capabilities enhance productivity, enabling engineers to optimize their workflow.

The E8267C PSG delivers unparalleled performance in the microwave frequency range of 250 kHz to 70 GHz. It includes advanced modulation capabilities, allowing users to generate complex waveforms with relative ease. The E8267C supports various digital modulation schemes, including QAM, which is crucial for testing modern communication systems. Its high output power and excellent spectral purity make it suitable for both R&D and manufacturing applications. Additionally, the E8267C features built-in functionality for frequency and power sweeps, providing users with extensive testing options.

In summary, Agilent Technologies’ E8257C, E8247C, and E8267C signal generators are integral tools for professionals seeking high performance and versatility in their testing environments. With unique features and advanced technologies, these generators cater to the demands of modern applications, ensuring reliable and accurate signal generation for a wide range of industries. Whether it's for research, development, or manufacturing, these instruments demonstrate Agilent's commitment to delivering top-notch testing solutions.