The Agilent/Keysight 81594B Optical Head Interface Module is a 2×2 optical switch plug-in for the 8164B Lightwave Measurement System mainframe. It routes optical sources—such as lasers—and optical receivers, including power sensors and oscilloscopes, with low insertion loss and fast switching. Available in Single-Mode Fiber (SMF) and Multi-Mode Fiber (MMF) configurations, this module delivers reliable performance across millions of switching cycles, making it ideal for test automation and signal routing in optical measurement systems.
– Technical Specifications
• Switching Time: Less than 10 ms
• Insertion Loss: Less than 1.5 dB
• Polarization Dependent Loss (PDL): Less than 0.05 dB (SMF option)
• Repeatability: 0.02 dB over 10,000 random switch cycles
• Guaranteed Lifetime: Greater than 10 million cycles
• Return Loss: Specified for input ports
• Crosstalk: Specified for output ports
– Key Features
• Compact module form factor integrates into 8164B mainframe
• Dual fiber type options for SMF and MMF deployment
• Sub-10 ms switching enables rapid signal path selection
• Exceptional PDL performance maintains signal integrity in polarization-sensitive applications
• Field-proven reliability with >10 million cycle guarantee
• Low repeatability error ensures consistent attenuation across extended measurement campaigns
– Typical Applications
• Automated optical source and receiver routing
• Multi-channel optical power measurements
• Laser characterization and testing
• Optical receiver validation
• Test system signal path switching
– Compatibility & Integration
Designed exclusively for the Agilent/Keysight 8164B Lightwave Measurement System. The 8164B mainframe accommodates up to four compact modules alongside tunable laser sources and provides GPIB and LAN interfaces for remote operation and integration into automated test systems.
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