Preparing for Measurement
3-29
IM AQ6370E-02EN
3
3.8  Connecting the DUT
 WARNING
Do not look at the optical fiber laser light that you are measuring or point the laser at another 
person’s eye. Doing so may cause eye damage or impair one’s health.
 CAUTION
•  Before connecting an optical fiber to the instrument, make sure that the start-up 
initialization process has finished. If a strong light source is input during start-up, the optical 
section can be damaged. 
•  Be sure to clean the tip of the optical fiber’s optical connector before connecting. 
•  As there may be dust adhering to calibration output, be sure to clean it before connecting 
optical fiber.
•  Do not try to forcefully attach the optical fiber’s optical connector with the plug inserted at a 
slanted angle. Doing so may damage the instrument’s optical connector’s components or 
the connector itself. 
•  Before connecting the input light, make sure that it does not exceed the
  AQ6370E’s maximum rated level. If input light exceeding the maximum rated level is 
introduced, the optical section may be damaged. 
•  Press the optical connector hard against the cleaning surface of the special cleaner to 
clean it. If it is not pressed hard against the cleaning surface, it may not be possible to 
properly clean the optical connector.
French
 AVERTISSEMENT
Ne regardez pas directement la lumière du laser à fibre optique et ne pointez pas le laser 
vers le yeux d’une tierce personne, pour ne pas provoquer de blessures ou de dommages 
oculaires.