27OLS7-FTTH FeaturesPower key1. - Press this key to turn the OLS7-FTTH on or off. When the unit is turned on, it returns tothe last operating condition it was in prior to being turned off.Power port2. (located on the top panel) - This is the interface for an AC power adapter.External Power indicator3. - Lights up, whether the unit is on or off, when the correct AC poweradapter is connected.Low Battery indicator4. - Lights up when a Low Battery condition exists; batteries requirereplacement.Output port5. - Universal Connector Interface (UCI). Accepts swappable SC connector (ST, FC, and LCconnector styles are available).Active Output indicators -6. The Active Output indicators light up when the corresponding output portis on.Wavelength -7. l key - Wavelength select key changes the active output wavelength(s) as indicatedbelow for each operational mode.OLS7-FTTH Triple Wavelength Laser Source1490nm 1550nm1310nm270Hz330HZ1KHz2KHzCW9VOLS7-FTTHOptical Light SourceλWave IDModeNOYESWavelengths - l keyActive OutputindicatorsMode keyExternal PowerindicatorPower keyLow Battery indicator489173Output port65Active ModeIndicatorsPower port 2