The Yokogawa AQ1210 series OTDR tester is designed to empower field technicians to make fast and precise measurements with confidence. The AQ1210 Series delivers high performance in a compact, field-ready design. Engineered with innovative technology, the AQ1210 features. The AQ1210E from Yokogawa Test & Measurement Corporation is a Optical Time Domain Reflectometer (OTDR) with OTDR Measurement Time 3 minutes, Event Dead Zone 0. 75 m, Attenuation Dead Zone 4 m, Optical Wavelength 1310 to 1625 nm, Dynamic Range 35 to 37 dB. More details for AQ1210E can be seen below.