public bool SetVel(short sAxis, double dVel)
 {
     lock (lockObj)
     {
         if (Enum.IsDefined(typeof(DefaultAxis), sAxis))
         {
             Dmc1000.d1000_change_speed((ushort)sAxis, (int)dVel);
             return(true);
         }
         else
         {
             return(false);
         }
     }
 }