NMD (Network Measurements Division) connectors and adapters are reinforced mechanical interface ports designed to provide strong durability and protect precision coaxial ports on RF test cables and adapters from wear or damage during use. Known for their sturdy and reliable mechanical design, NMD interfaces are widely used in vector network analyzer (VNA) systems and high-precision RF testing environments.

Understanding NMD Connectors and Adapters

The term NMD refers to a family of precision RF interfaces that follow standardized mechanical and electrical dimensions. These standards ensure compatibility across the industry, allowing engineers to correctly match connectors and adapters of the same NMD type.

Main NMD Interface Types:

• NMD 3.5mm

• NMD 2.92mm

• NMD 2.4mm

• NMD 1.85mm

Each connector type corresponds to specific frequency ranges and precision levels. The 50-ohm NMD interface standard is consistent with international manufacturing requirements for high-precision RF measurement instruments.

Interface standard

● NMD3.5mm

● NMD2.92mm

● NMD2.4mm

● NMD1.85mm

Applications of NMD Connectors and Adapters

NMD interfaces are essential in a variety of RF testing and calibration setups, providing stable connections with excellent mechanical repeatability. They are commonly used in:

• Vector Network Analyzer (VNA) panel ports

• Electronic calibration modules

• High-precision amplitude and phase stable test cable assemblies

By integrating NMD ports, systems can achieve better connection consistency, longer connector lifespan, and reduced signal degradation during repeated measurements.

Application

● Electronic Calibration Parts

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● Network Analyzer Ports

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● VNA Test Cable Assembly

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Focusimple’s Expertise in NMD Technology

Focusimple provides a comprehensive range of NMD connectors, adapters, and VNA test cable assemblies. Our designs ensure precision, durability, and phase stability, helping users achieve reliable performance in every measurement. Whether for electronic calibration or network analyzer integration, Focusimple offers customized NMD interface solutions that meet the highest standards of RF accuracy and consistency.