The Keysight 87106C is a Single Pole, Six Throw (SP6T) multiport coaxial switch that routes RF signals across six output ports from DC to 26.5 GHz. Built on magnetic latching technology with opto-electronic position indicators, it delivers insertion loss repeatability of ±0.03 dB over 5 million cycles and isolation exceeding 90 dB at 26.5 GHz. The switch employs an interrupt circuit that opens all unselected paths before closing the selected RF path, eliminating transient signal leakage and contact failures inherent in conventional electromechanical designs. Rated for over 10,000,000 operating cycles, the 87106C integrates TTL/5V CMOS logic control with optional 24 VDC bias, making it ideal for automated test systems requiring high repeatability and long service life.
## Technical Specifications
**RF Performance**
• Frequency range: DC to 26.5 GHz
• Insertion loss repeatability: ±0.03 dB (guaranteed to 5 million cycles at 25 °C)
• Isolation: >100 dB up to 12 GHz; >90 dB at 26.5 GHz
• VSWR (unmatched): 10,000,000 cycles
• Opto-electronic position indicators with interrupt logic
## Key Features
• Interrupt circuit ensures all unselected ports open before selected path closes
• Opto-electronic indicators eliminate DC contact failures
• Insertion loss repeatability of ±0.03 dB maintains measurement accuracy over product life
• High isolation (>90 dB at 26.5 GHz) prevents cross-talk between switched signals
• Extended cycle life rated >10 million operations
## Typical Applications
• Automated test and measurement systems requiring multi-channel signal routing
• High-frequency signal monitoring and distribution
• Precision RF measurement configurations demanding low insertion loss repeatability
## Compatibility & Integration
TTL/5V CMOS control with optional 24 VDC bias supply. Requires 20–32 VDC external supply connected to pin 1 with ground on pin 15 for electronic position indicators.
