... can be output to meet the ITU-T G.811 requires a reference clock source, you can ... , the output waveform consistent with ITU-T G.703 HDB3 pattern as the E1 signal, ... signals 24 hours later); meet the ITU-T G.811 protocol for a reference clock source. SpecificationsInterface:Antenna ... GPS lock, 24-hour average) Drifting: ITU-T recommendation G.811 meet the requirements of Jitter Generation: ≤ 20ns (peak ...