public void Insert(int idx, List <sSignalData> signalList)
        {
            DataKeeper dk = new DataKeeper();

            dk.Add(signalList);
            data.Insert(idx, dk);
        }
        public void Add(List <sSignalData> signalList)
        {
            DataKeeper dk = new DataKeeper();

            dk.Add(signalList);
            data.Add(dk);
        }