The AF-OS430NU, part of Advanced Fiber Solutions’ OS400 series, is a laser-based optical light source designed specifically for single-mode fiber optic testing. It’s used alongside an optical power meter to measure insertion loss and certify fiber links, especially in outside plant and long-haul applications.
Key Features & Specs
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Wavelengths: 1310 nm and 1550 nm lasers.
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Modulation Options: Continuous Wave (CW) and 2 kHz for identification/tracing.
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Output Power: Greater than –8 dBm, adjustable via side-mounted trim pots.
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Connector Styles: Factory-fixed ST, FC, or SC. The OS430N variant (not necessarily NU) may come with interchangeable adapters.
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Power Supply: Operates on 2 × AA batteries or an AC adapter.
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Indicators & Build: Includes a low battery LED indicator, housed in a compact (approx. 4.94″ × 2.75″ × 1.2″), rubber-booted, rugged enclosure.
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Operating Temperature: −10 °C to +50 °C (non-condensing humidity). Storage: −20 °C to +60 °C.



