... base station, PHS base stations, GSM network optimization system provides high-precision time and frequency synchronization signal.CC81131 ... impedance: 50Ω Rising: <20ns Timing accuracy: <100ns (satellite tracking error relative to UTC time) TOD information output: 1 channel ... information, per 1 Display Indicator: Power, GPS, 1pps, Tracking LCD screen: year, month, day, hour and working conditions ...