Agilent Technologies 4395A - Page 311

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
Sea
rch
5
and toggle
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SEARCH
TRK on
OFF to
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NN
N
N
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N
N
N
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N
N
ON
off to
turn ON
the search
track
function.
3.
Choose
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N
TARGET
.
4.
Press
4
0
5
4
2
1
5
and
choose
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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
Values
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
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MORE
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EQUIV
CKT
MENU
to
access the
equivalent circuit
menu.
2.
Choose
N
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SELECT
EQV
CKT
[A]
and
select
N
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N
E
as
the
equivalent
circuit
model
to
use
.
3.
Choose
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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