The VS–402 dual frequency VCSO (Voltage Controlled Saw Oscillator) from Vectron is a high frequency, ultra low phase noise oscillator designed to support high speed data converters and 100G coherent optical receivers. The VS–402 provides 12fs rms jitter in the 12kHz to 20MHz integration bandwidth and is available from 1.0GHz to 2.8GHz. Two frequencies are switchable.