05 | Keysight | E4991B Impedance Analyzer - Data Sheet
Segment sweep
Available setup parameters for each segment:
Sweep frequency range, number of measurement points, point averaging factor,
oscillator level (power, voltage, or current), DC bias (voltage or current), segment time,
segment delay.
Number of segments: 1 to 201
Sweep span types: Frequency base or order base
Measurement Accuracy
Conditions for defining accuracy
Temperature: 23 °C ± 5 °C1
Accuracy-specified plane: 7-mm connector of test head
Accuracy defined measurement points:
Same points at which the calibration is done.2
Basic accuracy (Typical)
0.45%
Accuracy when open/short/load calibration is performed
|Z|, |Y|:
±(Ea + Eb) [%]
(see Figures 1 through 4
for examples of
calculated accuracy)
(Ea + Eb)
q::
±
[rad]
√
100
L, C, X, B:
± (Ea + Eb) x (1 + D
x
2) [%]
2
√
R, G:
± (Ea + Eb) x (1 + Qx) [%]
Ea + Eb
(1 + D2x)tan
D:
100
Ea + Eb
at Dx tan
< 1
±
100
Ea + Eb
±
1
Dx tan
100
Ea + Eb
especially at |Dx| ≤ 0.1
±
±
100
Ea + Eb
(1 + Q2x)tan
Q:
100
Ea + Eb
at Qx tan
< 1
100
Ea + Eb
±
1
Qx tan
100
Ea + Eb
10
Ea + Eb
especially at
≥ |Qx| ≥ 10
± Q2x
100
1. If the calibration is performed in 5 °C to 18 °C or 28 °C to 40 °C, the accuracy is degraded to doubled
value (typical).
2. If the calibration is performed in different frequency points or different DC bias points from the
measurement, the accuracy is degraded to doubled value (typical).
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