The PROLITE-55 offers 1310nm, 1490nm, 1550nm with excellent stability for accurate fiber testing, especially in FTTx. This compact instrument operates in either continuous wave (CW) mode or modulated mode.

The PROLITE-55 can transmit with a wavelength identification digital encrypted protocol, enabling the PROLITE-63B power meter to automatically shift to the proper calibration wavelength. This feature reduces the need of communication between the two users and decrease the potential for error.