344
Appendix C
Temperature Characteristic Test Kit (Option 007)
Temperature compensation
Acquiring temperature compensation data
You need to acquire temperature compensation data for all temperature points at which you
want to make measurement. The temperature compensation data is the difference at each
temperature between admittance measurement data for the open standard/impedance
measurement data for the short standard and the reference data (measurement data for the
open/short standard measured within the temperature range of 18
°
C to 28
°
C).
Execution procedure of acquiring temperature compensation data
NOTE
When the DC bias feature (option) is provided, turn the feature off while acquiring
temperature compensation data.
Step 1.
Make sure that the temperature of the
E4991A
itself and tip of the measurement cable is
within 18
°
C to 28
°
C and execute the open/short/load calibrations at the tip of the
measurement cable (7-mm port) in the fixed frequency and fixed power point mode.
NOTE
Do not change the wiring layout of the measurement cable after executing calibration.
Step 2.
Set measurement frequency points so that those will form the same sequence as the
frequency points used for calibration (the frequency point in the fixed frequency and fixed
power point mode).
Step 3.
Measure the open standard.
1. Connect the heat-resistant open standard to the tip of the measurement cable.
2. Measure the admittance and read out the result. This data is the reference data for open.
3. After putting the temperature chamber (the tip of the measurement cable) to the
temperature at which you want to acquire temperature compensation data, wait for at
least 30 minutes (until the temperature becomes sufficiently stable) after the temperate
is reached.
4. Measure the admittance and read out the result.
5. For each measurement temperature, repeat 3 and 4.
Step 4.
Measure the short standard.
1. After putting the temperature chamber (the tip of the measurement cable) within 18
°
C
to 28
°
C, wait for at least 30 minutes (until the temperature becomes sufficiently stable)
after the temperate is reached.
2. Connect the heat-resistant short standard to the tip of the measurement cable.
3. Measure the impedance and reads out the result. This data is the reference data for
short.
4. After putting the temperature chamber (the tip of the measurement cable) to the
temperature at which you want to acquire temperature compensation data, wait for at
least 30 minutes (until the temperature becomes sufficiently stable) after the temperate
is reached.
5. Measure the impedance and read out the result.
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 ...