Agilent/Keysight 8481D

The Agilent/Keysight 8481D is a diode power sensor for precise average power measurement of RF and microwave signals from 10 MHz to 18 GHz. Designed for use with compatible Agilent/Keysight power meters, it delivers calibrated measurements traceable to NIST across a dynamic range of -70 dBm to -20 dBm (100 pW to 10 µW) with 50 Ohm impedance and Type-N male connector.

Technical Specifications

• Frequency Range: 10 MHz to 18 GHz


• Power Measurement Range: -70 dBm to -20 dBm (100 pW to 10 µW)


• Impedance: 50 Ohm


• Connector Type: Type-N male


• Dimensions: 1.5 in (H) × 4.02 in (L) × 1.5 in (W)


• Weight: 0.16 kg (0.37 lb)


• Operating Temperature: 0°C to +55°C


• Relative Humidity: 0 dBm incur additional ±0.5%/dB linearity error.


• Supplied Attenuator: Includes 11708A 30 dB attenuator for calibration against the power meter's 0 dBm, 50 MHz reference output.


• Static-Sensitive Device: Requires handling at a static-free workstation.

Typical Applications Average power measurement of continuous wave and modulated RF/microwave signals in laboratory and field environments requiring NIST-traceable measurement uncertainty.

Compatibility & Integration The 8481D integrates with 435A/B, 436A, 437A, 438A, and 70100A power meters; EPM series (E4418B, E4419B, N1913A/14A); EPM-P series (E4416A, E4417A); E1416A VXI; N1911A, N1912A, N1913A, N1914A; and discontinued 43X power meters.