Features:
- Insertion Loss Repeatability
- High Isolation
- Low SWR
- Low-Insertion Loss
- Long Life
The Keysight N1810 / N1811 / N1812 Series Coaxial Switches combines unmatched flexibility of configuration with excellent repeatability, high isolation, low SWR, low-insertion loss, and long life.
The N1811TL Keysight Coaxial Switch may still be available for purchase and support from Artisan Technology Group beyond End-Of-Life (EOL) by the manufacturer (OEM).
Functions
Electromechanical coaxial switch; DC to 26.5 GHz; SPDT; 50 ohm impedance; SMA connectors; switching time < 20 ms; +24 VDC actuation voltage; latching; break-before-make; Insertion Loss 0.5 dB at 26.5 GHz; Isolation 60 dB at 26.5 GHz.
Platforms
Self-terminating SPDT electromechanical coaxial switch operating DC to 26.5 GHz with internal 50-ohm termination on unterminated port. Features SMA female connectors, failsafe latching operation with 5V/12V/15V/24V DC drive options, TTL-compatible control interface, position indicator output, and bypass capacitors for DC isolation. Magnetic latching maintains state without continuous power draw. Supports USB, LAN, GPIB control via compatible switch drivers/matrices. Integrates into automated test systems, RF signal routing matrices, calibration standards switching, receiver protection schemes, and redundancy switching applications. Compatible with 87000/L4400/34980A mainframes and U2751A USB modular instruments.
Applications
RF signal routing in automated test systems, telecommunications, and R&D labs for precise, repeatable signal path switching up to 26.5 GHz with minimal insertion loss and high isolation.
Accessories
Requires 24V DC coil power supply; TTL control interface with specified logic levels; solder lug terminals for coil drive connections; no external mainframe needed; includes built-in 50 O termination on unused ports; connectors are four female SMA coaxial ports rated DC to 26.5 GHz; internal current interrupt for coil drive; optional TTL or standard drive configurations.
Interfaces
The device includes 1 RF coaxial connector, typically a Type N male, 50 ohms impedance, designed for microwave signal switching. It also uses a control connector for interface with external systems, often a DB9 or similar type for relay control signals, plus power connector terminals for operating voltage input.
Specifications
Eight-port single-pole-eight-throw (SP8T) RF/microwave coaxial switch providing automated signal routing from DC to 26.5 GHz. Features unterminated design with SMA female connectors, 0.4 dB insertion loss, 85 dB isolation, and 2 million cycle lifetime. Operates via TTL/CMOS logic control interface with 15ms switching speed. Integrates into automated test systems through parallel digital control lines, supporting matrix and multiplexer configurations. Common applications include multi-DUT testing, antenna switching, signal path verification, and RF production test systems requiring high-frequency signal distribution.
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