The HP/Agilent 41952A is a 50 Ohm transmission/reflection test set that expands the measurement capability of the 4195A Network/Spectrum Analyzer. This accessory enables S-parameter characterization of RF devices and networks across a wide frequency range without requiring DUT reorientation. Internal power splitters and directional couplers facilitate simultaneous transmission and reflection measurements, making it ideal for filter, amplifier, and cable assessment.
## Technical Specifications
**Operating Frequency**
• 100 kHz to 500 MHz
**Directivity**
• 40 dB from 300 kHz to 200 MHz
**Measurement Accuracy**
• Transmission magnitude: ±1 dB @ 300 kHz
• Transmission phase: ±5 degrees @ 300 kHz
• Reflection magnitude: ±1 dB @ 1 MHz
• Reflection phase: ±5 degrees @ 1 MHz
**Source Match at Test Port**
• >20 dB @ 300 kHz
**Connectors**
• Test port: Type N (female)
• RF input: 50 Ohm Type N (female)
• Incident port: 50 Ohm Type N (male)
## Key Features
• Single-unit transmission/reflection measurement capability
• Dual-unit S-parameter configuration supported
• Directional coupler and power splitter integration
• 50 Ohm impedance throughout
• Compact box form factor
## Typical Applications
• RF filter characterization and tuning
• Amplifier gain and stability assessment
• Cable loss and phase measurement
• Two-port device S-parameter extraction
• Return loss and VSWR analysis
## Compatibility & Integration
Designed exclusively for the HP/Agilent 4195A Network/Spectrum Analyzer platform. Operates as a standalone unit for basic transmission/reflection work, or pairs with a second 41952A/B test set for complete four-port S-parameter measurements.
