The Agilent/Keysight 85131G is a semi-rigid test port cable engineered for precision network analyzer measurements from DC to 26.5 GHz. The 53 cm (21 inch) cable features a rugged female NMD-3.5 mm connector at the test port and a male 3.5 mm connector at the device end, delivering controlled signal integrity across demanding high-frequency applications.
Technical Specifications
• Frequency Range: DC to 26.5 GHz
• Length: 53 cm (21 inches)
• Cable Type: Semi-Rigid
• Return Loss: 16 dB or better
• Insertion Loss (Test Port Connector): 0.3 × √f + 0.2 dB (f in GHz)
• Insertion Loss (Device Connector): 1.8 dB at 26.5 GHz maximum frequency
• Phase Stability (Amplitude): 0.06 dB (90-degree bend, 4-inch radius)
• Phase Stability (Phase): 0.16° × f + 0.5° (f in GHz, 90-degree bend, 4-inch radius)
– Key Features
• NMD Female Test Port Connector: Larger coupling threads provide enhanced stability and mechanical repeatability. This rugged design is optimized for network analyzer test ports and is not compatible with standard male connectors.
• Male 3.5 mm Device Connector: Standard interface for DUT connection.
• Precision Slotless Connectors: PSC-grade connectors deliver superior electrical performance and durability compared to slotted alternatives.
• Controlled Phase Stability: Characterized performance under mechanical stress ensures measurement confidence during field deployments and lab work.
– Typical Applications
• S-parameter measurements on high-frequency components and assemblies
• Network analyzer test port extensions
• High-frequency component characterization to 26.5 GHz
• Impedance and reflection coefficient measurements
– Compatibility & Integration
Designed exclusively for network analyzers equipped with male NMD-3.5 mm test ports. The female NMD connector at the test port end does not interface with standard male 3.5 mm connectors; mating requires compatible NMD-equipped instrumentation.
