SARK 110, Руководство пользователя, Страница: 59 / 87

SARK SARK SARK SARK- - - -110 110 110 110
User’s Manual
Rev 1.2.6 October 3
rd
, 2015 - 59 - © Melchor Varela – EA4FRB 2011-2015
Fra Self-resonant frequency of the capacitor
Z(Fop) Z at operating frequency
Z(Fra) Z at resonance frequency
Ca Equivalent capacitance at F = 1 MHz
Ra Equivalent resistance at the self-resonant frequency
The capacitor’s parasitic inductance is calculated with the following equation:
2
) 2 (
1
Fra Ca
La
× × ×
=
π
The quality factor is calculated using the following equation:
) 2 (
1
Ra Ca Fop
Qa
× × × ×
=
π
14.3 Quartz Crystal
This function determines the equivalent circuit model of quartz crystals. Detailed usage of this
function is described in the Application Note available at: http://www.sark110.com/application-
notes/equivalent-circuit-determination-of-quartz-crystals
The measurement procedure is as follows:
Select the file name and press [ ● ] or
select [ ▲ ] when the results are not to be
saved in a file
Enter the frequency value, which should
be close to the expected resonant
frequency of the crystal