The PPM-352B-EG-ER allows for the testing of passive optical networks (PONs) at the three main wavelengths (1310, 1490 and 1550 nm) used in fiber-to-the-home (FTTH) and fiber-to-the-premises (FTTP) networks. This Power Meter features two-port, pass-through connection for ONT signal measurement and simultaneous measurement of all PON signals; filtered detectors for individual measurement of each wavelength; and upstream burst detection at 1310 nm.