Keysight Technologies N4917BSCB 400G User Manual

Contents

Keysight Technologies N4917BSCB 400G User Manual Manual pdf 75 page image

Keysight N4917BSCB 400G Optical Receiver Test Application User Guide 75Performing Stressed Receiver Compliance Tests with N4917BSCB Software 5Starting the stressed receiver conformance test signal calibrationTo start the actual stressed receiver conformance test signal calibration,activate the corresponding check box in the test tree and click the Runbutton on the Run tab or right-click in the test tree and select Runchecked tests.During the calibration, status messages in the message window show theprogress of the run and display the currently performed action andintermediate measurement results.NOTE The automated stress signal calibration will reset and reconfigure allused hardware instruments at the beginning of each calibration run.Hence any manual settings will be lost. So, make sure to save thesesettings prior to starting a calibration run.NOTE The automated stress signal calibration might take several minutes(more than 20 min), depending on the used hardware and calibrationsettings. In case the calibration aborts during the run due to a timeouterror, please try to increase the instrument timeout variable in globalsettings in the Configuration tab.NOTE The running calibration process can be aborted by clicking the Stopbutton on the Run tab.NOTE The intrinsic SECQ must be lower than initial target SECQ. Therefore,BERT de-emphasis optimization is recommended before eachcalibration.