The M1010-01 is a VCSO (Voltage Controlled SAW Oscillator) based clock jitter attenuator PLL designed for clock jitter attenuation and frequency translation. The device is ideal for generating the transmit reference clock for OC-12 and OC-48 optical network systems supporting 622 2,488 MHz rates. It can serve to jitter attenuate a stratum reference clock or a recovered clock in loop timing mode. The M1010-01 module includes a proprietary SAW (surface acoustic wave) delay line as part of the VCSO. This results in a high frequency, high-Q, low phase noise oscillator that assures low intrinsic output jitter.