Q1: Does the OTDR (980EXT) support both 1310nm and 1550nm wavelengthes to test fibers?A1: Yes, the OTDR support both 1310nm and 1550nm wavelengths. But we also provide one wavelength version 1550nm for choice. Please download our datasheet to see model list. Q2: Does the OTDR (980EXT) support real time and average time testing mode like