19 | Keysight | E4991B Impedance Analyzer - Data Sheet
Option E4991B-002 Material Measurement (Typical)
Measurement parameter
Permittivity parameters: |[r|, [r’, [r”, tand
Permeability parameters: |µr|, µr’, µr”, tand
Frequency range
Using with Keysight Technologies, Inc. 16453A:
1 MHz to 1 GHz (typical)
Using with Keysight 16454A: 1 MHz to 1 GHz (typical)
Measurement accuracy
Conditions for defining accuracy:
Calibration:
Open, short, and load calibration at the fixture (7-mm connector)
Calibration temperature:
Calibration is performed at an environmental temperature within the range of
23 °C ± 5 °C.
Measurement accuracy doubles when calibration temperature is 5 °C to 18 °C or
28 °C to 40 °C.
Temperature:
Temperature deviation: within ± 5 °C from the calibration temperature
Environment temperature: Measurement accuracy applies when the calibration is
performed at 23 °C ± 5 °C. When the calibration is below 18 °C or above 28 °C,
measurement error doubles.
Measurement frequency points:
Same as calibration points1
Point averaging factor: ≥ 8
Electrode pressure setting of 16453A: maximum
Typical accuracy of permittivity parameters:
Δ[' r m
[r’ accuracy
=
:
'
[
r m
0.1
t
'
['r m
100
13
± 5 + 10 +
+ 0.25
r m
+
[%]
t
2
f
[
1–
√
f ['
r m
(at tand < 0.1)
•
Loss tangent accuracy of [‘r (= ∆tand):
± (Ea + Eb) (at tand < 0.1)
where,
Ea
=
at Frequency ≤ 1 GHz:
0.001
t
0.1
13
0.002 +
•
+ 0.004f +
f
['
2
r m
1–
√
f ['
r m
1. In fixed frequency calibration mode, if a measurement frequency point is not included in the
calibration points, the accuracy at the measurement point is degraded to its doubled value (typical).
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