Agilent / Keysight 85056K Mechanical Calibration Kit, DC to 50 GHz, 2.4 mm & 2.92 mm

The Agilent/Keysight 85056K is a mechanical calibration kit for precise network analyzer calibration across DC to 50 GHz, supporting 2.4 mm and 2.92 mm connector systems. It delivers systematic error correction and high-fidelity RF and microwave measurements through precision-machined calibration standards, metrology-grade terminations, and adapter assemblies engineered for repeatable, broadband performance.

Technical Specifications

-# Frequency Range

• DC to 50 GHz (2.4 mm connectors)


• DC to 40 GHz (with 2.4 mm to 2.92 mm adapters) -# Connector Systems


• 2.4 mm and 2.92 mm compatible


• Precision adapters with tight tolerances: 2.4 mm to 2.4 mm and 2.4 mm to 2.92 mm


• Nominal electrical lengths matched for calibration of non-insertable devices -# Calibration Standards

Offset Opens and Shorts: Machined precision standards with controlled pin depth and precise phase deviation specifications across DC to 50 GHz, with frequency-dependent tolerances. Broadband Terminations: Metrology-grade 50Ω loads rated to 50 GHz, featuring distributed resistive element on sapphire substrate for stability and repeatable return loss performance. Sliding Loads: Optimized operation from 4 GHz to 50 GHz.

Key Features

• Offset opens and shorts with tightly controlled phase error across full frequency band


• Repeatable connections via rugged internal termination structure


• Precision adapters designed for stable broadband performance and non-insertable device calibration


• Complete mechanical standard set with minimal systematic error

Included Accessories

• Torque wrenches: 5/16 in at 90 N-cm (8 in-lb) and 5/16 in at 56 N-cm (5 in-lb)


• 7 mm open-end wrench


• Connector gauges for interface verification and maintenance


• Calibration definition data disk for network analyzer loading


• User's and Service Guide with specifications, maintenance, care, and performance verification procedures

Compatibility & Integration Designed for use with 2.4 mm test port cables. Kit includes adapters to facilitate cross-connector measurements and maintains identical nominal electrical lengths to support both insertable and non-insertable device characterization.