DSX321G 50.000MHz DSX321G 50M 12PF 20PPM DSX321G 50MHZ DSX321G 54.000MHZ DSX321G 55.4667 MHz DSX321G 56.000MHZ DSX321G 62.4MHZ 12PF DSX321G 8.0000MHZ DSX321G 8.000MHZ DSX321G 8M