8163A/B, 8164A/B, 8166A/B Lightwave MainframesUser’s Guide1 Getting StartedSafety Considerations / 18Laser Safety Information / 238163A/B Lightwave Multimeter / 348164A/B Lightwave Measurement System / 358166A/B Lightwave Multichannel System / 36A Description of the User Interface / 37How to Change the Value of a Parameter / 54A Sample Session / 58This chapter introduces the features of the Keysight 8163B LightwaveMultimeter, the Keysight 8164B Lightwave Measurement System, and theKeysight 8166B Lightwave Multichannel System. In general, if notspecifically mentioned, the information in this User Guide also applies tothe previous generation of 8163A, 8164A and 8166A. Here you will find aquick description of the instrument, how to use the user interface and howto perform a simple sample session.The central element of the instrument is the Keysight 8163B LightwaveMultimeter, the Keysight 8164B Lightwave Measurement System, and theKeysight 8166B Lightwave Multichannel System mainframes. Youcustomize the instrument using plug-in modules and changeablefiber-connector interfaces. You can use this instrument as a tunable lasersource and also to take associated measurements.