Agilent/Keysight 85082A

The Agilent/Keysight 85082A is a 50-ohm input module that extends the RF and microwave measurement capabilities of the 8508A vector voltmeter. Operating from 300 kHz to 2 GHz, this plug-in module enables precise RF voltage and phase characterization across a signal level range of −47 dBm to 13 dBm. The narrowband measuring technique delivers 10 µV sensitivity, making it suitable for low-level signal detection and analysis.

When integrated with the 8508A mainframe, the 85082A supports RF voltage measurements, RF phase measurements, group delay calculations, and electrical length determination. The module’s matched 50-ohm impedance ensures accurate source connection and signal fidelity across the full operating bandwidth. Installation is straightforward—the module plugs directly into the 8508A vector voltmeter without requiring external interface components.

– Technical Specifications

• Frequency Range: 300 kHz to 2 GHz
• Impedance: 50 Ohms
• Sensitivity (with 8508A): 10 µV
• Signal Level Range (with 8508A): −47 dBm to 13 dBm
• Module Type: Plug-in input module

– Key Features

• Narrowband measuring technique for enhanced signal resolution
• Dual-channel phase measurement capability
• Supports both amplitude and phase characterization from 300 kHz to 2 GHz
• Low sensitivity floor enables detection of signals below −47 dBm

– Typical Applications

• RF and microwave signal analysis
• Phase and amplitude correlation measurements
• Group delay and electrical length characterization
• Low-level signal detection in research and production environments

– Compatibility & Integration

The 85082A is designed exclusively for the Agilent/Keysight 8508A vector voltmeter. Complete documentation, including operating and service information, is provided in the HP 8508A Vector Voltmeter Operating and Service Manual (HP part number 08508-90000) and the HP 70138A MMS Vector Voltmeter Service Manual (HP part number 70138-90002).