Agilent / Keysight 85563A 3-in-1 OSL Mechanical Calibration Kit, DC to 50 GHz, 2.4 mm (f)

The Keysight 85563A is a 3-in-1 OSL mechanical calibration kit designed to calibrate vector network analyzers and measurement systems operating DC to 50 GHz. This compact unit combines offset open, offset short, and broadband termination (load) standards in a single kit, all terminated with 2.4 mm female connectors. The kit delivers the high-precision calibration standards required for accurate component characterization across the microwave and mmWave frequency spectrum.

Technical Specifications

• Frequency Range: DC to 50 GHz


• Calibration Standards: Offset Open (female), Offset Short (female), Broadband Termination/Load (female)


• Load Return Loss: 26 to 42 dB across frequency range Mechanical Design


• Connector Type: 2.4 mm female


• Open Standard: Inner conductor supported by low-dielectric-constant plastic


• Short Standard: One-piece inner conductor construction with repeatable shorting plane geometry


• Form Factor: Compact, lightweight, three-in-one integration

Key Features

• Mechanical calibration standards eliminate the need for software-based calibration approaches on compatible instruments


• Offset architecture minimizes systematic errors at the test port reference plane


• One-piece short design delivers repeatable electrical contact across multiple calibration cycles


• Low-loss dielectric materials in open standards support measurement accuracy through 50 GHz


• Female connector gender accommodates direct connection to male test ports on Keysight network analyzers

Typical Applications

• Calibration of Keysight network analyzers rated to 50 GHz


• Component characterization (filters, amplifiers, transmission lines) with 2.4 mm connectors


• Laboratory and field measurement setups requiring portable calibration standards


• High-frequency device validation and quality assurance

Compatibility & Integration The 85563A is engineered for direct connection to Keysight vector network analyzers with 2.4 mm female test ports. The male-connector variant (85564A) addresses test systems with male test port geometry. Optional adapters enable gender conversion between test port and calibration kit connector types, allowing integration into existing measurement configurations.