The HP/Agilent 8481A is a thermocouple power sensor engineered for precise RF and microwave power measurements across 10 MHz to 18 GHz. It integrates directly with HP and Agilent power meters, delivering calibration-grade accuracy and stable performance in laboratory and field environments. The sensor combines high sensitivity with excellent linearity, enabling confident measurement from low to moderate power levels across demanding test applications.
– Technical Specifications
Measurement Range: −70 dBm to +20 dBm
Frequency Range: 10 MHz to 18 GHz
Accuracy & Stability
• Calibration factor uncertainty: ±0.3% at 25 °C
• Reflection coefficient (VSWR): <1.06 across full frequency range
• Low temperature coefficient for stable readings over ambient temperature variation
Electrical Characteristics
• Impedance: 50 Ω
• Connector: Type N male
• Rapid measurement response time
– Key Features
• High sensitivity for accurate low-power measurement
• Excellent linearity across the specified power range
• Calibration data stored within sensor for automatic meter recognition
• Durable construction for field deployment
– Typical Applications
RF and microwave power measurement in test and characterization workflows, including transmitter validation, amplifier performance assessment, and signal path power level verification across the S-, C-, Ku-, and lower Ka-band frequencies.
– Compatibility & Integration
Designed for use with HP and Agilent power meters supporting the 8480 series sensor family. Commonly compatible with EPM-series instruments such as the E4418B and E4419B, as well as legacy power meters. Automatic sensor recognition enables plug-and-play operation without manual calibration entry.
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