DIN EN 60444-7:2004-11 Measurement of quartz crystal unit parameters - Part 7: Measurement of activity and frequency dips of quartz crystal units (IEC 60444-7:2004); German version EN 60444-7:2004
2004DIN EN 60444-7:2004-11 Measurement of quartz crystal unit parameters - Part 7: Measurement of activity and frequency dips of quartz crystal units (IEC 60444-7:2004); German version EN 60444-7:2004
2004DIN EN 60444-7:2004 Measurement of quartz crystal unit parameters - Part 7: Measurement of activity and frequency dips of quartz crystal units (IEC 60444-7:2004); German version EN 60444-7:2004