54 Keysight DFB Laser Source Module User’s Guide4 Cleaning InformationHow to clean instruments with a fixed connector interfaceYou should only clean instruments with a fixed connector interface when itis absolutely necessary. This is because it is difficult to remove any usedalcohol or filaments from the input of the optical block.It is important, therefore, to keep dust caps on the equipment at all times,except when your optical device is in use.If you do discover filaments or particles, the only way to clean a fixedconnector interface and the input of the optical block is to use compressedair.If there are fluids or fat in the connector, please refer the instrument to theskilled personnel of Keysight’s service team.CAUTION Only use clean, dry compressed air. Make sure that the air is free of dust,water, and oil. If the air that you use is not clean and dry, this can lead tofilmy deposits or scratches on the surface of your connector interface.This will degrade the performance of your transmission system.Never try to open the instrument and clean the optical block by yourself,because it is easy to scratch optical components, and cause them to bemisaligned.
