The Agilent/Keysight 85135E is a flexible test port cable assembly engineered for direct connection between Keysight network analyzer test ports and devices under test. Operating from DC to 18 GHz, this 97.2 cm cable delivers stable, low-loss signal transmission across broad frequency ranges with minimal phase and magnitude variation.
Technical Specifications
• Length: 97.2 cm (38.25 inches)
• Frequency Range: DC to 18 GHz
• Test Port Connector: 2.4 mm Female (NMD-2.4 mm -f- Slotted)
• Device Connector: 7 mm
• Return Loss: 17 dB or better
• Insertion Loss (Test Port): ≤ 0.46 × √f + 0.3 dB (f in GHz)
• Insertion Loss (Device Connector at 18 GHz): ≤ 2.25 dB
• Magnitude Stability (90° bend, 3–4 inch radius): < 0.22 dB change
• Phase Stability (90° bend, 3–4 inch radius): < 0.16 × f + 0.8 degrees (f in GHz)
– Key Features
• Flexible cable construction for field routing and test setup optimization
• Newport-type miniature device (NMD) connectors with enlarged coupling threads for repeatable mechanical stability
• Female slotted connector on test port end ensures secure mating with male NMD-2.4 mm test ports
• Controlled insertion loss profile minimizes signal attenuation across the operating band
• Stable electrical performance under mechanical stress; bend stability rated at 90° with 3–4 inch radius
– Typical Applications
• Direct connection from network analyzer test ports to devices under test
• Two-port and multi-port device characterization
• S-parameter measurements requiring low loss and phase stability
• Production and field testing environments requiring flexible routing
– Compatibility & Integration
Designed for use with Keysight network analyzers equipped with male NMD-2.4 mm test ports. Connection to non-standard device connectors requires an appropriate intermediate adapter. Cable is suitable for both benchtop and portable test configurations.
