The Keysight U8487A is a USB thermocouple power sensor for precise power measurements across DC/10 MHz to 50 GHz. Engineered for engineers and system integrators, it delivers high-accuracy characterization in component testing, signal monitoring, and complex system integration. Direct USB connectivity eliminates external power meters and dedicated supplies—the sensor draws power from the host port.
Technical Specifications
• Frequency Range: DC/10 MHz to 50 GHz (Option 200 enables DC measurements for signal source/network analyzer calibration, power references, and EMC applications)
• Measurement Principle: Thermocouple
• Dynamic Range: −35 dBm to +20 dBm
• Power Linearity: <0.8% across full range; <0.55% for −1 dBm to +15 dBm; <0.80% for +15 dBm to +20 dBm at 0°C to 55°C ambient
• Measurement Speed: Up to 900 readings/second in free run/fast buffer mode
• RF Connector: 2.4 mm female (N-Type male adapter included)
• Zeroing Accuracy: ±25 nW
• Drift: ±10 nW
• Noise Floor: <±45 nW
– Key Features
• Internal Calibration: Integrated DC reference source and switching circuits enable in-situ calibration without disconnecting the device under test, reducing connector wear and measurement uncertainty
• Real-Time Measurement Uncertainty: Automatically computes and displays measurement uncertainty alongside power readings, eliminating manual calculations
• S-Parameter and Gamma Correction: Compensates for impedance mismatch and component-induced errors
• External Trigger Input: BNC to SMB connector for precise triggering of signals near the noise floor, supports direct connection from signal sources or devices under test
• Cable Options: Standard 1.5 m power sensor cable; optional 3 m and 5 m lengths. Supplied 1.5 m trigger cable (BNC male to SMB female, 50 Ω)
– Typical Applications
Component testing, signal monitoring, high-volume manufacturing characterization, and system integration where rapid, reliable power level measurement is essential.
– Compatibility & Integration
USB interface supports direct PC connection and integration with compatible Keysight instruments. No external power supply required.
