Agilent/Keysight N1924A

The Agilent/Keysight N1924A is a wideband power sensor that delivers precise peak and average power measurements across 50 MHz to 40 GHz. Designed specifically for the Keysight 8990B Peak Power Analyzer, this sensor combines a wide dynamic range of −35 dBm to +20 dBm with fast temporal resolution - rise and fall times of ≤3 ns at frequencies ≥500 MHz - enabling detailed characterization of modulated and pulsed signals. The N1924A pioneered integrated zero and calibration functionality by embedding a DC reference source and switching circuits directly into the sensor.

This eliminates external calibration connections, reducing connector wear, test time, and measurement uncertainty. Calibration factors, linearity, temperature, and bandwidth correction data are stored in onboard EEPROM, ensuring traceability without external sources.

Technical Specifications

• Frequency range: 50 MHz to 40 GHz


• Dynamic power range: −35 dBm to +20 dBm (peak power measurement)


• Rise/fall time: ≤3 ns (≥500 MHz)


• Damage level: +23 dBm average power; +30 dBm peak power (<1 μs duration)


• Connector: 2.4 mm precision type


• Fixed sensor cable lengths: 1.5 m, 3 m, or 10 m

Key Features

• Peak power, peak-to-average ratio, average power, rise time, fall time, maximum power, minimum power, and statistical peak signal data


• Internal zero and calibration with integrated DC reference source and switching circuits


• EEPROM storage of calibration factors, linearity, temperature, and bandwidth correction data


• Fast temporal response enables characterization of complex modulation formats and pulse structures

Typical Applications

• Modulated signal power measurement in wireless and communications testing


• Pulsed RF signal characterization


• Peak power and duty cycle analysis


• Multi-carrier and MIMO signal measurement

Compatibility & Integration

• Primary instrument: Keysight 8990B Peak Power Analyzer


• Precision 2.4 mm connector interface