The Keysight 85057B verification kit has a 2.4 mm connector and covers a frequency range of 10 MHz to 50 GHz. This kit includes a 50 ohm airline, stepped impedance airline, 20 dB and 40 dB attenuators. The verification kit is used with a Keysight 2.4 mm calibration kit and Keysight PNA series network analyzers.

Verification kits are used to verify that a network analyzer is operating within its specified performance. All verification kits include measurement data and uncertainties that are traceable to the U.S. National Institute of Standards and Technology (NIST).