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The Agilent 81561A Variable Optical Attenuator plug-in module is an instrument that attenuates and controls the optical power level of light in single mode optical fibers. As plug-in modules for Agilent’s Lightwave Multichannel platform (8163A/B, 8164A/B, 8166A/B) they allow you to set the attenuation factor and/or power level manually, or remotely via a common computer interface. Their high accuracy combined with their flexibility make them ideal as test and measurement equipment for the modern telecommunication industry. The Agilent 81561A is a small, cost effective attenuator modules with high resolution for single wavelength applications. By entering the operating wavelength, the instrument automatically applies the appropriate corrections. Various calibration features allow the user to set a reference power. Both the attenuation and the power level, relative to the reference power, can then be set and displayed in the user interface. An integrated shutter, which can be used for protection purposes, or to simulate channel drops, is available. Specifications. Wavelength range: 1200-1700 nm. Fiber type: 9/125 µm SMF28. Attenuation range: 0-60 dB. Resolution: 0.001 dB. Repeatability: +/- 0.01 dB. Accuracy (uncertainty): +/-0.1 dB. Settling time: typ. 100 ms. Polarization dependent loss: <0.05 dBpp. Return loss: typ. 60 dB. Maximum input power: +22 dBm. Shutter isolation: typ. 100 dB. Connectivity: straight connector
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