MEC4 INVERTED METALLURGICAL MICROSCOPEUNITRON 13Operation (continued)Selecting the Light Path (Fig. 13)The MEC4 is outfitted with a binocular viewing headwith one photo port for HDMI/digital imaging. Youmust select the appropriate light path for observingspecimens.The light path is set to 100% to the binoculareyepieces as the default setting at our facilities wherethe light path selection slider is set to the “OUT”position (pushed all the way to the right).Slide the light path selection slider to the left to the“IN” position. This will send 20% of the light to thebinocular viewing head and 80% to the top photo portfor HDMI/digital imaging and documentation.Fig. 13Light PathSelection Knob Light Intensity Ratio Application“OUT” Position 100% for binocular observation throughthe eyepieces Dark specimen observation“IN” Position 20% for binocular eyepieces80% for top photo portObservation for digital imagingand documentationLight PathSelectionSlider