Q:  Why PTZ is not functioning and the indicator is not lit after power on?
A:  The device is short of power supply maybe resulted from the following situations:
   - The charger is not connected to the correct power line, check for proper connection..
   - The power supply is damaged, replace it with good one.
   - The fuse is broken, replace the fuse accordingly.

Q:  What is a colorless rolling?
A:  When using video camera under fluorescent lighting,the digital signal processing
   is converting white into blue, pink digital signal and convert back to white. However,
   the incandescent light bulb is powered by AC in 50/60Hz so that the light intensity
   fluctuated, the converting speed of 8.3ms will reflect the fluctuation and causing the
   colorless rolling.