What is BS EN 60444-11 - Calculating the effective load capacitance CLeff for quartz crystal units about?
BS EN 60444-11 is the 11th part of a multi-series standard used for the Measurement of quartz crystal unit parameters.
BS EN 60444-11 defines the standard method of measuring load resonance frequency fL at the nominal value of CL, and the determination of the effective load capacitance CLeff at the nominal frequency for crystals with the figure of merit M > 4.
This gives good results in a frequency range up to 200 MHz. BS EN 60444-11 allows the calculation of load resonance frequency offset ΔfL, frequency pulling range ΔfL1, L2 and pulling sensitivity S as described in 2.2.31 of IEC 60122-1:2002. Contrary to the simple method of IEC 60444-4, this measurement technique avoids the use of physical load capacitors, and allows higher accuracy, better reproducibility and correlation to the application. It extends the upper frequency limit from 30MHz by the method of IEC 60444-4 to 200MHz approximately.
This method is based on the error-corrected measurement technique of IEC 60444-5:1995, and therefore, allows the measurement of fLand CLeff together with the determination of the equivalent crystal parameters in one sequence without changing the test fixture.
With this method the frequency fL is searched where the reactance XC of the crystal has the opposite value of the reactance of the load capacitance.
Who is BS EN 60444-11 - Calculating the effective load capacitance CLeff for quartz crystal units for?
BS EN 60444-11 on Measurement of quartz crystal unit parameters is useful for:
- Manufacturer of electronic devices
- Manufacturer of watches
- Manufacturer of radioactive devices
- Electronic engineer
Why should you use BS EN 60444-11 - Calculating the effective load capacitance CLeff for quartz crystal units?
Quartz is widely used within electronic devices. These quartz resonators are used as high-performance resonators for use in filters and oscillations.
BS EN 60444-11 specifies the test method for determining the load resonance frequency ƒL and the effective load capacitance CLeff. This helps in calculating the load resonance frequencies of these quartz crystal units. With the help of calculating the quartz crystal unit by using voltage.
BS EN 60444-11 is useful in identifying and avoiding these errors and this also helps in evaluating the frequencies of these quartz crystal units. By applying BS EN 60444-11, you can manufacture good quality quartz crystal units.