The HP/Agilent 8494B is a manual step attenuator engineered for precision signal level control in RF and microwave test environments. It delivers 0 to 11 dB of attenuation in 1 dB increments across frequencies from DC to 18 GHz, with 50 Ohm impedance matching. This attenuator provides the discrete attenuation control and repeatability required in vector network analyzers, signal generators, spectrum analyzers, and integrated RF signal processing systems. The stepped dial interface enables rapid, operator-controlled signal reduction without external power or control lines.
## Technical Specifications
• **Model:** HP/Agilent 8494B
• **Type:** Manual Step Attenuator
• **Frequency Range:** DC to 18 GHz
• **Attenuation Range:** 0 to 11 dB
• **Attenuation Resolution:** 1 dB steps
• **Impedance:** 50 Ohms
• **Connectors:** SMA (Sub-Miniature version A)
## Key Features
• Manual step-dial control for independent attenuation adjustment
• Discrete 1 dB steps ensure precise, repeatable signal reduction
• Broadband performance from DC through 18 GHz
• 50 Ohm characteristic impedance for standard RF system integration
• Mechanical reliability and long mechanical life
## Typical Applications
• Benchtop RF and microwave measurements
• Signal conditioning in vector network analyzer (VNA) test setups
• Gain and loss verification in signal generator and spectrum analyzer configurations
• Production testing and quality assurance environments
• Laboratory development and prototype validation
## Compatibility & Integration
The 8494B integrates directly into standard 50 Ohm RF test systems via SMA connectors. It pairs with signal sources, analyzers, and measurement instruments requiring variable attenuation without active control. Suited for fixed-position system integration or portable benchtop use across research, development, and manufacturing test floors.
