For example: Agilent E4440A or Anritsu 68369
High-Impedance Probe Input Module


Manufactured by: Keysight / Agilent


Keysight / Agilent 85081B - Probes

Keysight / Agilent 85081B Overview

The Agilent 85081B is a high-impedance input module with a frequency range of 100 kHz to 1 GHz and is included with every standard Agilent 8508A vector voltmeter. The Agilent 8508A is a two-channel receiver that makes high frequency voltage measurements easy. Its narrowband measuring technique gives it a sensitivity of 10 V to help you measure even the smallest signal. The Agilent 8508A also measures the phase between two signals - so you can use it for another complete set of measurements - like group delay and electrical length. The Agilent 11570A accessory kit allows measurements in a 50 ohm system using the probes of a standard Agilent 85081B.


  • RF voltage and phase measurements made accurately and simply
  • 100 kHz to 1 GHz with high impedance inputs

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