The Agilent/Keysight 85518A is a 4-in-1 OSLT mechanical calibration kit designed for precision network analyzer calibration across DC to 18 GHz. It provides open, short, load, and thru standards with Type-N male connectors and 50 ohm impedance, enabling accurate error correction and characterized measurements in RF and microwave test environments.
Technical Specifications
• Frequency Range: DC to 18 GHz
• Connector Type: Type-N male, 50 ohm
• Calibration Standards: Open, Short, Load, Thru (4-in-1)
• Physical Dimensions: 106 × 72 × 22 mm (H × W × D)
• Weight: Approximately 2 lbs
• Operating Temperature: +18 °C to +28 °C
• Storage Temperature: −40 °C to +70 °C
Open Phase Error:
• 0–6 GHz: ≤ 2.0°
• 6–9 GHz: ≤ 3.0°
• 9–18 GHz: ≤ 4.0°
Short Phase Error:
• 0–6 GHz: ≤ 1.5°
• 6–9 GHz: ≤ 2.5°
• 9–18 GHz: ≤ 3.0°
Load Return Loss:
• 0–6 GHz: ≥ 42 dB
• 6–9 GHz: ≥ 35 dB
• 9–18 GHz: ≥ 32 dB
Through Return Loss (typical):
• DC–4 GHz: ≥ 38 dB
• 4–8 GHz: ≥ 34 dB
• 8–18 GHz: ≥ 28 dB
Through Electrical Delay: 245.383 ps (male-male)
Through Insertion Loss (typical): ≤ 0.035 dB × √(f/GHz) (DC to 18 GHz, male-male)
Offset Delay (Open, male): 85.954 ps
– Key Features
• Compact, lightweight design for laboratory and field deployment
• Integrated thru standard enables calibration of non-insertable devices such as cables and filters with male-male connectors
• All four OSLT standards included for complete error correction
• Type-N male connectors ensure compatibility with standard RF and microwave equipment
• Protective storage recommended to maintain precision performance and connector integrity
– Typical Applications
• Network analyzer calibration and error correction
• RF and microwave measurement verification
• Cable and filter device characterization
• Precision test system validation across DC to 18 GHz
– Compatibility & Integration
The 85518A interfaces with Agilent/Keysight network analyzers and compatible third-party RF instrumentation equipped with Type-N male connectors. The male-male thru configuration supports direct connection to test ports and external devices without adapter requirements.
