The Keysight 8158B Optical Attenuator is a programmable instrument for precise control of optical power in single-mode and multimode fiber systems. It delivers 60 dB attenuation range with 0.01 dB resolution and exceptional repeatability, enabling accurate power management across component testing, system calibration, and network simulation. Automatic wavelength correction enhances measurement fidelity by compensating for wavelength-dependent attenuation variations.
Technical Specifications
Attenuation Performance
• Attenuation range: 60 dB (excluding insertion loss)
• Display range: 0.00 to 64.00 dB
• Display resolution: 0.01 dB (minimum step size)
• Linearity (single-mode): < ±0.4 dB; (multimode): < ±0.2 dB
• Repeatability (single-mode, 9 µm): < 0.2 dB after 6 matings; (multimode, 50 µm): < 0.1 dB after 6 matings
Optical Characteristics
• Insertion loss (multimode, 50 µm): < 2.0 dB; (single-mode, Option 002 only): 27 dB; (including connectors): 14 dB
• Numerical aperture: Up to 0.3
Wavelength Options
• Option 001: 600 nm to 1200 nm
• Option 002: 1200 nm to 1650 nm
– Key Features
• Full HP-IB (IEEE-488) programmability for automated test integration
• Automatic wavelength correction via user-entry into instrument memory
• Manual or automatic attenuation sweep (up and down)
• Optical shutter with > 90 dB blocking capability
• User-selectable parameter storage and recall (9 settings)
• Multi-connector support: Diamond HMS-10/HP, FC/PC, DIN 47256, ST
– Physical & Power
• Dimensions: 212 mm W × 89 mm H × 345 mm D
• Weight: 5.3 kg net
• Power: 100/120/220/240 Vrms, ±10%, 90 VA max., 45–400 Hz
– Compatibility & Integration
Supports both single-mode and multimode optical fibers with numerical apertures to 0.3. IEEE-488 interface enables integration into automated test systems and laboratory environments requiring remote attenuation control.
