Agilent Technologies 4395A, Manual Change

Page: 311 / 575

Evaluation of a Crystal Resonator (ZA Mode)
Readout of Resonance Frequency (F
r
) and Crystal Impedance (CI)
1. Press 4 Chan 2 5 to activate Channel 2.
2.
Press 4 Search 5 and toggle
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
SEARCH TRK on OFF to
NNNNNNNNNNNNNNNNNNNN
ON off to turn ON the search track
function.
3. Choose
NNNNNNNNNNNNNNNNNNNN
TARGET .
4.
Press 4 0 5 4 21 5 and choose
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
SEARCH LEFT .
The marker moves to the zero phase (0 ) point on the lower-frequency side . This is the point
at which the resonance frequency (F
r
) and crystal impedance (CI) occur .
Figure 10-28. Readout of the F
r
and CI V alues of a Crystal Resonator
Equivalent Circuit Analysis
The 4395A supports the 4-element equivalent circuit model, which is suitable for evaluating
crystal resonator .
1.
Press 4
Displa y
5 and choose
NNNNNNNNNNNNNN
MORE
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
EQUIV CKT MENU to access the equivalent circuit menu.
2.
Choose
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
SELECT EQV CKT [A] and select
NNNNN
E as the equivalent circuit model to use .
3.
Choose
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
CALCULATE EQV PARAMS to calculate the parameters of the equivalent circuit.
Preceded by a beep , the values of the equivalent circuit parameters appear at the bottom of
the screen.
Examples of Applications 10-33