The Keysight 84904K Programmable Step Attenuator is built to deliver reliable, repeatable, and precise signal attenuation for RF and microwave testing. Offering 1 dB increments across an 11 dB range, it enables engineers and researchers to fine-tune signals with accuracy and confidence. With excellent performance from DC to 26.5 GHz, this attenuator is ideal for use in communications, aerospace, defense, and advanced research applications where high-frequency performance and consistency are critical.
Key Features:
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Programmable step attenuator with 1 dB resolution
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11 dB maximum attenuation range
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Broad frequency coverage from DC to 26.5 GHz
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High repeatability for consistent test results
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Compact, rugged design for long-term use
Included Accessories:
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User documentation
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Standard RF connectors (SMA or equivalent, as specified)
Compliance:
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Manufactured to Keysight quality and calibration standards
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Suitable for ISO/IEC 17025 accredited labs
Benefits for Lab Users:
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Provides precise and repeatable signal control
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Simplifies automated and manual RF test setups
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Reduces measurement uncertainty in sensitive applications
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Increases flexibility for system integration and research use




