The Keysight 81560A and 81561A are small and cost effective attenuator modules with high resolution. The Keysight 81566A and 81567A feature power control functionality that allows setting the output power level directly. When the power control mode is enabled, the module automatically corrects power changes at the input to maintain the output level set by the user.

• High input powers up to 2 Watt
• Excellent wavelength flatness: typical ± 0.05 dB
• Low insertion loss: typical 0.7 dB
• Wide wavelength range: 1200 nm to 1700 nm (SM), 700 nm to 1400 nm (MM)
• High resolution: 0.001 dB
• Modular design allows up to 17 attenuators in one mainframe
• Active power control options to set power levels directly
• Comprehensive offsets allow easy calibration of the set-up
• Integrated shutter
• The Keysight versatile optical connector interfaces for all