The RP 460 Optical Power Meter measures optical power on fiber optic networks operating at 850nm, 1310nm, 1490nm and 1550nm. These easy-to-use optical power meters provide absolute dBm or dB loss measurements on all optical networks. The RP 460 allows the user to set the incoming signal to a “zero” reference and provide direct loss measurements, store up to 1000 measurements per wavelength, and transfer data via the mini USB port to any computer running ODM software. The unit allows users to review saved readings in the field to ensure that all appropriate data has been gathered.