Agilent / Keysight E4412A Wide Dynamic Range Power Sensor, E-Series

The Keysight E4412A is a CW diode power sensor engineered for accurate average power measurement across broad frequency and power ranges. Part of the E-Series and EPM product families, it delivers 90 dB dynamic range with internal calibration data storage and fast measurement acquisition, making it ideal for RF and microwave signal analysis in laboratory and production environments.

Technical Specifications

Measurement Type: Average power for CW signals Frequency Range: 10 MHz to 18 GHz Power Measurement Range: −70 dBm to +20 dBm Dynamic Range: 90 dB Measurement Speed: Up to 400 readings per second Connector: Type-N Male Output Units: dBm, dB (logarithmic), Watts, or % (linear) when interfaced with compatible power meters Data Storage: Calibration factors, linearity, and temperature compensation stored in EEPROM

Key Features

• Wide Dynamic Range: 90 dB span enables precision measurement from −70 dBm to +20 dBm


• Excellent SWR: Reduces mismatch uncertainty in test configurations


• Fast Acquisition: Achieves up to 400 readings per second for efficient test throughput


• Onboard Calibration: EEPROM stores calibration factors and temperature compensation data


• Broad Frequency Coverage: Operates from 10 MHz through 18 GHz for VHF through microwave bands

Signal Compatibility Optimized for continuous wave (CW) signals. Digital modulation, pulsed, or amplitude-modulated signals may introduce measurement errors. Multi-tone signals or those containing harmonic content greater than −45 dBc may degrade accuracy at high power levels.

Compatibility & Integration Works with EPM Series (N1913B/14B, N1913A/14A, E4418B/19B), EPM-P Series (E4416A/17A), P-Series (N1911A/12A), and legacy HP power meters (435B, 436A, 437B, 438A, 70100A, E1416A).