The HP/Agilent 8485A Power Sensor delivers precise RF and microwave power measurements from 50 MHz to 26.5 GHz across a dynamic range of -30 dBm to +20 dBm (1 µW to 100 mW). Built with a thermocouple sensing element and 50 ohm impedance, this instrument provides measurement uncertainty of ±0.6 dBm with calibration factor uncertainties ranging from ±1.6% to ±2.3% (RSS) across the frequency spectrum. The APC-3.5mm male connector ensures reliable signal coupling while excellent SWR characteristics minimize mismatch uncertainty.
Technical Specifications
• Frequency Range: 50 MHz to 26.5 GHz
• Power Range: -30 dBm to +20 dBm (1 µW to 100 mW)
• Connector: APC-3.5mm (male)
• Sensing Element: Thermocouple
• Impedance: 50 ohm
• Measurement Uncertainty: ±0.6 dBm
• Power Linearity: ±0.55% at 25°C (typical, after zero and calibration)
• Operating Temperature: 0°C to 55°C
• Weight: 0.2 kg (net); 0.5 kg (shipping)
– Key Features
• Calibration factor data provided at 1 GHz increments on sensor-specific sheets, traceable to NIST
• Calibration factor uncertainty at 1 mW ranges from ±1.6% (RSS) at 1.0 GHz to ±2.3% (RSS) at 16.0 GHz
• Probable Worst Case uncertainties extend from ±3.9% to ±5.7% across the frequency range
• Option 033 extends capability to 33 GHz with Type N to 3.5 mm adapter for 50 MHz calibration
• Each sensor includes individual calibration documentation and reflection coefficient data
– Typical Applications
Telecommunications, radar systems, and electronic warfare measurements requiring traceable, standards-referenced power characterization across L-, S-, C-, X-, Ku-, and Ka-band frequencies.
– Compatibility & Integration
The 8485A integrates with EPM Series (E4418B/19B, N1911A/12A, N1913A/14A), EPM-P Series (E4416A/17A), P-Series, 435B, 436A, 437B, 438A, 70100A, and E1416A VXI power meters.
