Agilent / Keysight 85082A 50-Ohm Input Module, 300 kHz to 2 GHz

The Agilent/Keysight 85082A is a 50-ohm input module that extends the measurement capabilities of the 8508A vector voltmeter across the 300 kHz to 2 GHz frequency band. This input module is a critical signal conditioning component in broadband noise figure and signal analysis systems, enabling precise RF voltage and phase measurements. The 85082A delivers low insertion loss and stable performance across its entire operating range, making it suitable for high-frequency measurement applications requiring consistent accuracy in both ratio and absolute amplitude measurements.

Technical Specifications

• Frequency Range: 300 kHz to 2 GHz


• Input Impedance: 50 Ohms


• Input Connectors: 50-ohm standard connectors


• Sensitivity (8508A system): 10 µV (narrowband measuring technique)


• Dimensions: 10 x 4 x 2 inches


• Weight: 1 lbs

Key Features

• Low insertion loss across the full frequency range


• Stable performance from 300 kHz through 2 GHz


• Enables RF voltage and phase measurements


• Amplitude accuracy specified for both ratio and absolute measurements


• Modular design for integration into vector voltmeter systems

Typical Applications

• Broadband noise figure analysis


• Signal analysis and RF voltage measurement


• Phase measurement systems


• Group delay measurements (when paired with 8508A dual-channel capability)


• Electrical length characterization

Compatibility & Integration The 85082A functions as an optional input module for the Agilent/Keysight 8508A vector voltmeter, a two-channel receiver platform designed for high-frequency voltage and phase measurements between two signals. This modular architecture allows the 85082A to integrate into existing 8508A-based measurement systems without requiring complete system replacement.