The Keysight (Agilent) N1812UL is a 5-port latching coaxial switch engineered for signal routing and transfer applications across DC to 67 GHz. This unterminated, rectangular coaxial switch delivers low insertion loss, high isolation, and exceptional repeatability in automated test equipment, calibration systems, and high-frequency measurement setups. Break-before-make contact configuration ensures signal integrity during transitions. Operating life reaches 2 million cycles standard, extending to 5 million cycles with Option 115. The switch supports multiple coil voltage options (5 V, 15 V, 24 V) and TTL/5V CMOS compatible drive electronics (Option 401), integrating into diverse test architectures.
Technical Specifications
RF Performance
• Frequency Range: DC to 67 GHz
• Insertion Loss: < 0.27 dB at 4 GHz; 120 dB at 4 GHz; > 70 dB at 26.5 GHz; > 70 dB at 67 GHz (with Option 301)
• SWR: < 1.10 at 4 GHz; < 1.60 at 26.5 GHz
• Maximum Power: 2 W CW (DC–4 GHz, 15 V drive); 1 W avg into load; 2 W avg into thru
Electrical
• Coil Voltage Options: 5 V (4.5–7.0 V), 15 V (12.0–20.0 V), 24 V (20.0–32.0 V)
• Supply Current: 550–600 mA @ 5 V; 125–300 mA @ 15 V; 75–200 mA @ 24 V
• Drive: Standard (manual grounding) or TTL/5V CMOS compatible (Option 401)
Mechanical & Reliability
• Switching Type: Latching
• Contact Configuration: Break-before-make
• Operating Life: 2 million cycles (standard); 5 million cycles (Option 115)
• Insertion Loss Repeatability: 0.03 dB to 1 million cycles; 0.1 dB to 2 million cycles; better than 0.03 dB to 5 million cycles
– Key Features
• Five ports with external termination capability on unused port
• Insertion loss consistency across 2 million operating cycles
• Option 301 provides enhanced isolation at 67 GHz
• Option 115 extends operating life to 5 million cycles
• Multiple voltage options reduce external supply requirements
– Typical Applications
• Automated test equipment signal routing
• Transfer switch and path reversal in measurement systems
• Dedicated calibration port switching
• High-frequency R&D validation and production test
– Compatibility & Integration
The N1812UL accepts standard coaxial connectors and operates with 5 V, 15 V, or 24 V supplies. TTL/5V CMOS drive option (Option 401) enables direct integration with digital control systems and microcontroller interfaces.
