the LED INPUT in the U-Mix 44

Hi, Help me please
In my U-mix44 soundcard, using Mix vibes CD timecode,the
INPUT led stayed activated when I play the CD timecode.
Is this normal? or is indicative of saturation
In my U-mix44 soundcard, using Mix vibes CD timecode,the
INPUT led stayed activated when I play the CD timecode.
Is this normal? or is indicative of saturation