The Keysight N1911A is a P-Series single-channel RF and microwave power meter designed for high-speed peak, average, and peak-to-average ratio power measurements in R&D and production test environments. When paired with P-Series wideband power sensors (N1921A/N1922A), it delivers measurement speeds up to 1,500 readings per second with exceptional accuracy across a wide dynamic range.

• High-Speed Measurements: Up to 1,500 readings per second in free-run mode for capturing fast power transients and accelerated production throughput.
• P-Series Sensor Compatibility: Works with N1921A (50 MHz to 18 GHz) and N1922A (50 MHz to 40 GHz) wideband power sensors for versatile frequency coverage.
• Wide Dynamic Range: -70 dBm to +44 dBm power measurement range (sensor dependent) covering from low-level signal analysis to high-power transmitter testing.
• Multiple Measurement Modes: Peak, average, and peak-to-average ratio (PAR) measurements with built-in CCDF analysis for characterizing complex modulated signals.
• 30 MHz Video Bandwidth: Wide video bandwidth for accurate peak power measurements of pulsed and modulated RF signals including radar, WLAN, and LTE.
• Color TFT Display: Bright, easy-to-read color LCD with graphical trace display for visualizing power measurements over time.

The N1911A is part of the Keysight P-Series power measurement platform, which uses diode-based wideband sensors with internal digital signal processing. This architecture provides true RMS and peak power measurements independent of modulation format, making it ideal for testing modern communication signals with high crest factors such as LTE, 5G NR, and WLAN OFDM.

• USB 2.0 interface for direct PC connection with virtual COM port support.
• LAN 10/100 Base-T for network-based remote control with built-in web interface for monitoring and configuration.
• GPIB (IEEE-488.2) for integration into automated test systems with full SCPI command support.
• Internal and external TTL trigger for synchronized measurements in multi-instrument test setups.
• Compatible with Keysight VEE, LabVIEW, MATLAB, and BenchVue software.

• Wireless communication transmitter testing (cellular base stations, WLAN access points)
• Radar and pulsed RF system power characterization
• RF component gain and output power verification (amplifiers, filters, antennas)
• Production line automated power measurement and quality assurance
• EMC radiated and conducted power measurements
• Aerospace and defense RF system testing