Request InfoAnritsu Co.Anritsu Co. has announced the release of an automatic calibration unit for its ME7890A optical amplifier test system. The unit calibrates the system while it is connected to a device under test, improving the overall accuracy to 0.1 dB, suitable for WDM and dense WDM research and development, manufacturing and inspection. The calibration unit is a 5 x 5 switching matrix, which allows one input to function with five outputs, all with different insertion losses. 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