HSX321G 24MHZ HSX321G 25MHZ 12PF 20PPM HSX321G 48MHZ HSX321G(14.318280MHZ) HSX321G/12.000MHZ HSX321G/24.000MH HSX321G/25.000000MH HSX321G/25.000000MHZ HSX321G12.000MHZ HSX321G-12.000MHZ