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The Ando AQ7250 mini-OTDR Mainframe is a compact, lightweight, and battery-powered. It offers a range of functions and capabilities ideal for field use. Its exceptionally wide dynamic range is particularly effective for measuring lines over long distances, as well as lines with heavy loss. In addition, an improved measurement algorithm drastically reduces measurement processing time. A wide range of optional equipment enables a single unit to be used for measurements on a variety of optical fiber lines. An optional high-speed printer or optical switch unit, as well as a visible light source or optical power meter can be installed on the main unit of the AQ7250. Specifications. Display: 7.2-inch color LCD (640 x 480 dots). Full-scale: 25m, 50m, 125m, 250m, 500m, 1km, 1.25km, 2km, 2.5km, 5km, 10km, 20km, 40km, 80km, 160km, 240km (Varies according to the unit). Shift: 0 to distance range. Resolution: Sampling resolution: 50 cm/min. Sample data count: 20,000 points max. Distance accuracy: ± (5.0 x 10-5 x measurement distance in meters + 1m). Group refractive index setting: 1.00000 to 1.99999, in 0.00001 steps. Distance measurement: Displays the relative one-way distance between any two given points, in two ranges on the waveform, in eight digits. Scale: 0.2 dB/div., 0.5 dB/div., 1 dB/div., 2 dB/div., 5 dB/div., and 7.5 dB/div. Shift: 0 to 68 dB. Read resolution: Max. 0.001 dB. Loss measurement: Displays one-way losses in steps of 0.001 dB to a maximum of 5 digits, Displays the relative one-way loss, loss per unit length, and splice loss between any two given points in two ranges on the waveform.
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