Connor-Winfield’s OH OCVCXO series are exceptionally precise frequency standards. They are excellent for use in cellular base stations, test equipment, Synchronous Ethernet, VSAT, PTP IEEE-1588 and Stratum 3E applications. This series of OCXOs provide frequency stabilities in the range of ±1.5 ppb to ±10 ppb over the commercial, extended commercial, or the industrial temperature range. Power requirements are 1.1 W over the commercial temperature range and 1.5 W over the industrial temperature range after warm-up. Additionally, excellent aging and short-term stability characteristics are achieved through the use of precision overtone SC cut crystals. The OH series units are available with either Sinewave or CMOS logic for fixed frequencies, or with Electronic Frequency Tuning. These oscillators provide outstanding phase noise that varies depending on actual output frequency. Allan Variance specifications are rated for primary reference standards. Warm up times are on the order of 5 minutes to 0.10 ppm of final frequency.