The AQ7280 series is a high-performance measurement instrument capable of measuring the distance and loss of optical fibers and determining the location of faults. To enhance efficiency and measurement quality, the AQ7280 series incorporates a capacitive touchscreen with multi-touch functionality. The AQ7280 series consists of nine models, including the AQ7285A and AQ7283K. The AQ7285A offers a wide dynamic range, making it suitable for long-distance measurements, while the AQ7283K can measure up to four different wavelengths. As a modular measurement unit, users can replace measurement modules on-site, providing the AQ7280 series with flexibility and convenience. By swapping measurement units, the AQ7280 series can flexibly adapt to new measurement demands arising from advancements in optical communication technology.