Agilent/Keysight N8485A

The Agilent/Keysight N8485A is a wide dynamic range power sensor for average power measurement across 50 MHz to 50 GHz. It delivers accurate characterization of both low and high power signals in demanding RF and microwave test environments. The sensor integrates with Keysight power meters via a proprietary interface, enabling reliable power monitoring in applications ranging from base station verification to radar and satellite communications testing.

– Technical Specifications

• Frequency Range: 50 MHz to 50 GHz
• Measurement Type: Average Power
• Dynamic Range: -70 dBm to +20 dBm
• Accuracy: Varies by frequency and power level (detailed accuracy tables in product datasheet)
• Calibration: Traceable to national standards
• Input Connector: Type-N or 2.4 mm (configuration dependent; consult specific model documentation)

– Key Features

• Wide dynamic range enables measurement of both low-level and high-level power signals
• Supports power meter compatibility across Keysight E-series, V-series, and select RF/microwave meter models
• Proprietary sensor interface carries power, trigger, and measurement data
• National standards traceability ensures measurement confidence
• Effective measurement range depends on paired power meter capabilities and configuration

– Typical Applications

• Base station power verification in cellular infrastructure
• Satellite communications uplink and downlink signal characterization
• Radar transmitter output power and component performance monitoring
• Electronic warfare signal power characterization in complex environments
• Research and development RF and microwave power analysis

– Compatibility & Integration

The N8485A operates with Keysight power meters including the E4418B/E4419B, N1911A/N1912A, and M9381A (subject to appropriate firmware versions). Verify power meter firmware compatibility before deployment. Effective measurement performance depends on paired instrument configuration and settings.