The AR133A-00 from AccuBeat is a Time and Frequency Standard with Frequency 10 MHz, Frequency Stability ±0.3 ppb, Phase Noise -157 to -95 dBc /Hz, Short Term Stability 0.005 to 0.01 ppb, Long Term Stability <±0.002ppb. Tags: Frequency Standard. More details for AR133A-00 can be seen below.