... telecom, mobile communication base station, PHS base stations, GSM network optimization system provides high-precision time and frequency ... for 24 hours later) 2.048Mb / s (E1) signal output 1 channel, BNC interfaces, 75Ω Line coding: HDB3 Waveform: ... reference source Opt EIO: retiming input E1 signal input 1 channel, BNC interfaces E1 signal output 1 channel, BNC Interface (2048Kbit / s ...