The Solar-Electronics Company 9123-1N is a clamp-on RF current probe engineered for non-invasive measurement of radio frequency currents in EMC testing and RF circuit troubleshooting. Its toroidal transformer design enables rapid installation without circuit interruption, making it ideal for conducted emissions evaluation and real-time RF current monitoring across military and aerospace platforms.
Technical Specifications
• Frequency Range: 10 kHz to 500 MHz
• Transfer Impedance (ZT): 1.0 to 5.0 Ω above 300 kHz
• Output Load Impedance: 50 + j 0 Ω
• Continuous Signal Current (CW): 40 A
• Maximum Power Current: 200 A DC to 400 Hz
• Peak Pulse Current: 60 A maximum
• Probe Circuit: Inserted primary toroidal transformer
• Connector: Type N female
• Weight: 1.2 pounds (0.55 kg)
• Aperture Diameter: 4.5 inches (11.43 cm)
• Depth: 0.75 inches (1.90 cm)
• Width: 3.0 inches (7.60 cm)
• Window Width: 1.25 inches (3.17 cm)
• Cable Height: 1.375 inches (3.49 cm)
– Key Features
• Clamp-on design eliminates need for circuit board modifications
• Compact aperture accommodates standard conductor routing
• Transfer impedance specification ensures accurate signal conversion across the 300 kHz to 500 MHz band
• 50 Ω output impedance matches standard test instrumentation
• High current capacity supports both continuous and transient measurement scenarios
– Typical Applications
• Military EMC testing per MIL-STD-461
• Conducted emissions assessment (MIL-STD-461 CS115 & CS116)
• Aerospace EMC verification per DO-160 Section 20
• RF current monitoring in shielded enclosures and interconnect paths
– Compatibility & Integration
Type N female connector integrates directly with standard RF test receivers, spectrum analyzers, and EMI measurement systems. The 50 Ω output load impedance ensures minimal mismatch loss and reliable signal fidelity across the operating frequency range.
