Agilent/Keysight 11878A

The Keysight 11878A is a four-piece adapter kit that bridges 3.5 mm connectors to Type-N connectors, enabling seamless integration of precision RF devices into network analyzer systems. Designed for signal integrity across DC to 18 GHz, the kit delivers all gender combinations required for flexible test configurations: 3.5 mm male to Type-N male, 3.5 mm male to Type-N female, 3.5 mm female to Type-N female, and 3.5 mm female to Type-N male. Each adapter maintains 50 Ohm impedance matching and precision mechanical alignment critical for accurate microwave measurements.

– Technical Specifications

• Connector types: 3.5 mm (male/female) to Type-N (male/female)
• Impedance: 50 Ohm
• Frequency range: DC to 18 GHz
• Kit contents: Four precision adapters plus storage box and foam pad
• Net weight: 0.8 kg
• Shipping weight: 1.3 kg

– Key Features

• Complete four-adapter set covers all mating gender combinations
• Precision 3.5 mm connectors minimize signal degradation and SWR
• DC to 18 GHz bandwidth supports wideband network analyzer measurements
• Protective end-caps included to maintain connector integrity during storage
• Recommended mating torque: 8 in-lb (96 N-cm); torque wrench required
• Connector alignment critical—push straight, never rotate center conductor

– Typical Applications

• Testing 3.5 mm-connector devices on Type-N equipped network analyzers
• Microwave and RF device characterization
• Interconnection of precision measurement systems with mixed connector standards

– Compatibility & Integration

Adapters mate exclusively with precision 3.5 mm connectors on test devices. Periodic gaging using 3.5 mm gage sets (e.g., Keysight 85052B calibration kits) is recommended to maintain measurement accuracy. Individual adapters are not field-serviceable; damaged units require complete replacement.