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Highlights

The Keysight 8491B coaxial fixed attenuator provides precise attenuation, flat frequency response, and low SWR over broad frequency ranges. The attenuator is available in nominal attenuations of 3 dB and 6 dB, as well as 10 dB increments from 10 dB to 60 dB. It has type-N connectors with a maximum frequency of 18 GHz. This swept-frequency tested attenuator ensures specification compliance at all frequencies. A nameplate chart attached to each unit lists calibration points.

Superior RF Performance

  • Frequency Range: DC to 18 GHz
  • Maximum SWR: 1.2 to 8 GHz, 1.3 to 12.4 GHz, 1.5 to 18 GHz

Power Handling

  • Maximum Input Power: 2 W (average), 100 W (peak)

Features

  • Connector: Type-N male, female

Interested in a 8491B?

Featured Resources

Data Sheets 2014.07.31

Keysight 8491B Coaxial Fixed Attenuator

Keysight 8491B Coaxial Fixed Attenuator

This data sheet gives specifications on the 8491B coaxial fixed attenuator, DC to 18 GHz. The attenuator comes in nominal attenuations of 3 dB and 6 dB, as well as 10 dB increments from 10 dB to 60 dB.

2014.07.31

Technical Overviews 2020.03.26

8491A/B, 8493A/B/C, 11581A, 11582A and 11583C Coaxial Attenuators

8491A/B, 8493A/B/C, 11581A, 11582A and 11583C Coaxial Attenuators

This 9 page product overview describes Keysight 849x and 1158x series Coaxial Attenuators. Includes details on product description, construction, applications, benefits, calibration data, SWR chart, uncertainties chart, technical specifications, environmental specifications, and ordering information.

2020.03.26

User Manuals 2019.06.24

849x and 1158x Operating and Service Manual

849x and 1158x Operating and Service Manual

849x Coaxial Fixed Attenuators and 1158x Attenuator Sets Operating and Service Manual.

2019.06.24

Product Fact Sheets 2014.08.01

RF & Microwave Coaxial Fixed Attenuators

RF & Microwave Coaxial Fixed Attenuators

This two-page quick fact sheet highlights the key features and specifications for RF & Microwave Coaxial Fixed Attenuators.

2014.08.01

User Manuals 1981.06.30

849xA/B Attenuator and 1158xA Attenuator Sets Operating and Service Manual

849xA/B Attenuator and 1158xA Attenuator Sets Operating and Service Manual

Part Number: 08491-90065 (Jul81).

1981.06.30

Brochures 2020.08.13

RF & Microwave Attenuators

RF & Microwave Attenuators

This brochure eases selection of Keysight attenuators by providing a brief overview and specifications of fixed, manual, and programmable step attenuators.

2020.08.13

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