29 | Keysight | E4991B Impedance Analyzer - Data Sheet
Typical Effects of Temperature Change on Measure-
ment Accuracy (continued)
ƒ
=
Measurement frequency in GHz
Eah, Zsh and Yoh are given by following equations:
Eah
Zsh
Yoh
∆T
=
=
=
=
Ea´ × ΔTmax × 0.3 [%]
Zs´ × ΔTmax × 0.3 [mΩ]
Yo´ × ΔTmax × 0.3 [µS]
Difference of measurement temperature-from calibration temperature
Use ΔT = 0 °C if temperature compensation is set to off and the
difference ≤ 5 °C.
Use ΔT = 0 °C if temperature compensation is set to on and the
difference ≤ 20 °C.
ΔTmax
=
Maximum temperature change (°C) at the test port from calibration
temperature after the calibration is performed. Use ΔTmax = 0 °C if
maximum temperature change ≤ 10 °C.
Typical Material Measurement Accuracy When Using
Options 002 and 007
Material measurement accuracy contains the permittivity and permeability measurement
accuracy when the E4991B with Option 002 and 007 is used with the 16453A or 16454A
test fixture.
Measurement parameter
Permittivity parameters: |[r|, [’r , [”r , tand
Permeability parameters: |µr|, µ’r, µ”r, tand
Frequency
Use with Keysight 16453A: 1 MHz to 1 GHz (typical)
Use with Keysight 16454A: 1 MHz to 1 GHz (typical)
Operation temperature
Range: –55 °C to +150 °C
(at the test port of the high temperature cable)
+5 °C to +40 °C
(Main unit, test head, and their connection cable)
Typical material measurement accuracy
(-55 °C to 150 °C)
Conditions
The measurement accuracy is specified when the
following conditions are met:
Calibration: Open, short and load calibration is completed at the test port (7-mm
connector) of the high temperature cable. User frequency mode1
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).
KEYSIGHT [ Keysight Technologies ]
