25.4 x 25.4 mm 恒温晶振 100 MHz Sine Wave -163 dBc/Hz @ 1kHz ±20 ppb @ -20°C to +70°C
36.3 x 27.2 mm 恒温晶振 100 MHz Sine Wave -157 dBc/Hz @ 1kHz ±100 ppb @ -40°C to +85°C 0.05 ppb/g