Quartz crystal controlled oscillators of assessed quality - Part 4: Sectional specification - Capability approval (IEC 60679-4:1997); German version EN 60679-4:1998— 18 стр.
Quartz crystal controlled oscillators of assessed quality - Part 4: Sectional specification - Capability approval (IEC 60679-4:1997); German version EN 60679-4:1998— 18 стр.