Keysight Technologies 81663A User Manual

Contents

Keysight Technologies 81663A User Manual Manual pdf 27 page image

30 Keysight DFB Laser Source Module User’s Guide3 Performance TestsPerformance Test InstructionsThe performance tests given in this section include the WavelengthRepeatability Test and the Wavelength Stability Test. Perform each step inthe order given, using the corresponding test equipment.All Wavelength TestsMake sure that the cable connector, detectors and adapters are clean.1 Connect the output of the DFB Laser Source Module to the input of thewavelength meter.General Settings for the wavelength meterSet up the wavelength meter as follows. Refer to the user guide for thewavelength meter if you need further instructions.2 Set the display to show peak wavelength.3 Set the medium to Vacuum.Wavelength Repeatability Test1 Move to the DFB- Source channel of the 8163A/B 8164A/B or8166A/B mainframe and press Menu.2 Set the Wavelength mode to Offset and adjust the Power to less thanthe maximum displayed level of the wavelength meter. The minimumsetting for the DFB power may be used.3 Close the Menu.4 Press the key beside the laser output to switch on the laser output.NOTE • Make sure that all the optical connections used in the test setupsgiven in the procedures are dry and clean. Refer to the CleaningInformation on page no 35.• DO NOT USE INDEX MATCHING OIL.• Turn the instruments on, enable the laser and allow the instrumentsto warm up for at least 60 minutes.• The ambient temperature must be constant (±1K) during the tests.