＞多分MSBのオプションクロックの中身はHSO14だと思う

Here are our measurements on our top two at 24.576 MHz:
MSB CLOCK MEASURED: Galaxy Femto 77 Femto 33
Phase Noise at 0.1 Hz -67 db -72 db
Phase Noise at 1 Hz -99 db -114 db
Phase Noise at 10 Hz -134 db -145 db
Phase Noise at 1 kHz -157 db -157 db
Phase Noise at 10 kHz* -157 db -170 db
Phase Noise at 100 kHz* -157 db -170 db
Guaranteed TIE (1Hz - 1Mhz) 77 fs 33 femtoseconds**.
http://www.msbtech.com/products/femto.php?Page=platinumHome

HSO14
（Fo = 10MHz )
-122dBc/Hz Max. ＠1Hz ｵﾌｾｯﾄ
-135dBc/Hz Max. ＠10Hz ｵﾌｾｯﾄ
-140dBc/Hz Max. ＠100Hz ｵﾌｾｯﾄ
-140dBc/Hz Max. ＠1kHz ｵﾌｾｯﾄ
http://www.tamadevice.co.jp/News-hso-14.htm

違うんじゃね