The Agilent/Keysight 8502A is a Transmission/Reflection Test Set designed for simultaneous S-parameter measurements on devices under test. Operating at 50 Ohms impedance, it combines an RF power splitter, directional bridge, and programmable attenuator to enable both transmission (S21) and reflection (S11) characterization in a single integrated setup. The unit connects directly to compatible network analyzers and provides calibration-ready hardware for error correction and measurement accuracy in RF and microwave network analysis.
Technical Specifications
Frequency Coverage
• Standard: 500 kHz to 1.3 GHz
• With Option H26: 4 MHz to 2.6 GHz
Directivity
• >35 dB to 1.3 GHz
• >30 dB from 1.3 GHz to 2.6 GHz (Option H26)
RF Performance
• Maximum operating level: +20 dBm
• Attenuation range: 0 to 70 dB
• Impedance: 50 Ohms
Frequency Response (Transmission)
• Magnitude: <0.9 dB to 1.3 GHz
• Phase: <±10 degrees to 1.3 GHz
Frequency Response (Reflection)
• Magnitude: <1.8 dB from 4 MHz to 1.3 GHz
• Phase: 30 dB across extended frequency range
• Option H26 extends operation to 2.6 GHz with specified directivity and phase stability
• DC bias input for active device characterization
– Typical Applications
• Component characterization (filters, amplifiers, passive networks)
• Device S-parameter extraction in development and quality assurance
• Network analyzer augmentation for simultaneous reflection and transmission analysis
• Calibration and error-correction workflows in microwave test environments
– Compatibility & Integration
Designed for use with network analyzers including the Agilent/Keysight 8754A. Optional calibration kit available. Out of production as of August 1, 1986; out of support as of June 1, 1992.
