The 3M/Photodyne 19XT-062T is a portable variable optical attenuator engineered for precise signal attenuation across fiber optic systems. This instrument delivers electronically controlled attenuation with 0.1 dB resolution, supporting both multimode and single mode fiber at multiple wavelengths. Dual control modes—front panel and external voltage—provide operational flexibility for laboratory and field deployment.
Technical Specifications
• Attenuation Range: 0–70 dB at 850 nm and 1300 nm; 0–60 dB at 1550 nm
• Wavelengths: 850 nm, 1300 nm, 1550 nm
• Resolution: 0.1 dB
• Insertion Loss: 3.0 dB (measured)
• Fiber Types: Multimode and Single Mode
• Optical Interface: ST/PC
– Key Features
• Digital display with full attenuation and wavelength annunciation
• Front panel manual control or external electrical voltage input (25 dB per volt scale factor)
• Small, lightweight form factor
• AC adapter supplied; internal batteries user-replaceable
– Typical Applications
• Shortwave and longwave fiber optic signal testing
• Optical power level characterization across multimode and single mode systems
• Automated test sequences via analog voltage control
• Laboratory and field measurement environments
– Compatibility & Integration
The 19XT-062T accepts standard ST/PC connectors and operates across common fiber optic wavelengths (850 nm, 1300 nm, 1550 nm), making it compatible with both legacy multimode infrastructure and modern single mode deployments. External control capability enables integration into automated test stations through simple analog voltage signaling.
