The Keysight 34947A is a triple 1×2 SPDT unterminated microwave switch module engineered for integration into the Keysight 34980A Multifunction Switch/Measure Unit. It delivers bi-directional signal routing from DC to 26.5 GHz across three independent switch channels, each capable of handling up to 50 W. The module employs SMA connectors and the Agilent N1810UL series switch architecture to achieve excellent insertion loss, high isolation, and low VSWR across supported frequency bands.
Technical Specifications
• Switch Configuration: Three independent 1×2 SPDT unterminated switches
• Frequency Range: DC to 26.5 GHz (option dependent); available at 4 GHz, 20 GHz, and 26.5 GHz
• Signal Power Handling: Up to 50 W switching
• Switch Type: Agilent N1810UL series unterminated switches
• Connectors: SMA connectors
• Impedance: 50 ohms
• Signaling: Bi-directional switching capability
• Performance: Excellent insertion loss, high isolation loss, low VSWR
– Key Features
• Three independent channels enable simultaneous multi-band routing
• Unterminated architecture simplifies integration into existing microwave test systems
• Frequency options (Option 004 at 4 GHz, Option 020 at 20 GHz, Option 026 at 26.5 GHz) accommodate varied bandwidth requirements
• Option 001 supports external N1810 switch mounting or control
• Integrated control via the 34980A mainframe front panel or Web UI
– Typical Applications
• Switching separate signal sources for multi-band receiver/transmitter testing
• Complex microwave signal routing in automated test setups
• High-frequency data acquisition requiring precise signal path control
– Compatibility & Integration
The 34947A plugs directly into the Keysight 34980A mainframe. RF signals connect via SMA connectors on external cables. Programmatic control operates through the host unit’s front panel interface or Web UI. External N1810 switches can be mounted or driven via Option 001.
