298
Chapter 11
Specifications and Supplemental Information
Typical Material Measurement Accuracy When Using Option 002 and 007
Typical Effects of Temperature Change on Permittivity Measurement
Accuracy
When the temperature at the test port (7-mm connector) of the heat-resistant cable changes
more than 5
°
C from the calibration temperature, the typical permittivity measurement
accuracy involving temperature dependence effects (errors) is applied. The typical
permittivity accuracy is represented by the sum of error due to temperature coefficient
(
), hysteresis error
and the accuracy at 23
°
C
±
5
°
C
.
Typical accuracy of permittivity parameters
accuracy
[%]
Loss tangent accuracy of
where,
=
Permittivity measurement accuracy at 23
°
C
±
5
°
C
=
=
=
See Figure 11-54 through Figure 11-56 for the calculated value of
without temperature compensation
=
=
=
T
c
T
c
Δ
T
max
×
)
(
ε
r
′
Δε
rm
′
ε′
rm
--------------
=
E
ε
E
+
f
E
g
+
(
)
±
ε
r
·
Δ
δ
tan
=
(
)
E
ε
E
+
f
E
g
+
(
)
100
-----------------------------------
±
E
ε
E
f
T
C
Δ
T
×
E
g
T
C
Δ
T
max
×
0.3
×
T
c
K
1
K
2
K
3
+
+
T
c
K
1
1 10
6
–
60 150
f
×
+
(
)
×
×
K
2
3 10
6
–
×
1 10
f
×
+
(
)
×
ε′
rm
t
----------
1
1
f
f
0
----
2
–
------------------------
×
10
+
f
×
×
K
3
5 10
3
–
×
0.3 3
f
×
+
(
)
×
1
ε′
rm
t
----------
1
1
f
f
0
----
2
–
------------------------
×
10
+
f
×
-------------------------------------------------------------------
×
Summary of Contents for E4991A
Page 6: ......
Page 24: ...18 Contents ...
Page 80: ...74 Chapter3 Setting Measurement Conditions Averaging Measurement Results ...
Page 220: ...214 Chapter9 Setup and Use of Control Management Functions System Recovery ...
Page 338: ...332 AppendixB Probe Station Connection Kit Option 010 OPEN SHORT LOAD Calibration ...
Page 428: ...422 AppendixD Menu References Menu References ...
Page 482: ...476 AppendixI Messages Wait measuring comp standard ...
