The Agilent/Keysight 86109B is a plug-in module for 86100 series oscilloscopes delivering simultaneous optical and electrical signal analysis across the 1000–1600 nm wavelength range. Engineered for high-speed digital communications testing, this dual-channel module characterizes modern optical communication signals with selectable bandwidth modes and calibrated performance at 1310 nm and 1550 nm.
Technical Specifications
Optical Channel
• Bandwidth (user selectable): 26 GHz / 40 GHz
• Wavelength range: 1000 to 1600 nm (calibrated at 1310 nm and 1550 nm)
• Frequency response: 30 GHz (–2.5 dB), 40 GHz (–3.5 dB), 50 GHz (–4.5 dB) in best signal integrity mode; 26 GHz (–3 dB) in best noise performance mode
• Optical conversion: 11 V/W at 1550 nm; 12 V/W at 1310 nm
• Impulse risetime (10%–90%): 8.5 ps
• Impulse pulsewidth (FWHM): 12 ps
• Impulse aberrations: < 10% peak-to-peak
• Polarization dependent loss: < 0.5 dB
• RMS noise: 50 μW characteristic / 70 μW maximum (best pulse integrity mode); 20 μW characteristic / 30 μW maximum (best noise performance mode)
• Scale factor: 20 μW/division to 1.0 mW/division
• CW accuracy: ±50 μW ±4% of reading
• Average power monitor: –23 dBm to +9 dBm
• Factory calibrated accuracy: ±5% ± 100 nW at 20–30°C
• User calibrated accuracy: ±2.5% ± 100 nW for <5°C change
• Maximum input power: 8 mW (+9 dBm)
• Maximum non-destruct peak power: 50 mW (+17 dBm) or 0.25 pJ per pulse
• Maximum non-destruct average power: 10 mW (+10 dBm)
• Fiber input: 9/125 μm with user-selectable connector
• Input return loss: 30 dB (HMS-10 connector)
Electrical Channel
• Bandwidth: 26 GHz / 50 GHz
– Key Features
• Simultaneous dual-channel optical/electrical measurement capability
• Selectable bandwidth for optimized signal integrity or noise performance
• Low impulse aberrations and polarization-dependent loss
• Offset range: –6 mW to +2 mW
• Operating temperature: +10°C to +40°C
• Recommended calibration cycle: 12 months
– Compatibility & Integration
Compatible with Agilent DCA mainframes 86100x series, 83480A-series, and 54750-series modules.


















