DSX321G 28.63636MHZ DSX321G 30.000MHZ DSX321G 30M DSX321G 30MHZ DSX321G 32.000MHZ DSX321G 32.571429MHZ DSX321G 32.768KHZ DSX321G 32.768MHZ DSX321G 32M DSX321G 32M 10PPM 12PF -20~+70℃