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II. Improve Measurement Stability
There are several cases that can lead to unstable measurement results. In order to make repeatable
measurements, it is necessary to create a stable measurement environment, and the factors affecting
measurement stability mainly include the following aspects:
1
Frequency Drift
The frequency accuracy of the microwave analyzer depends on its internal 10MHz crystal oscillator. If
the measurement application requires higher frequency accuracy and stability, it is not recommended to
use internal frequency reference, instead of providing an external frequency reference with high stability
through the 10MHz reference input connector on the panel.
2
Temperature drift
The temperature change and the resulting thermal expansion and contraction can change the
characteristics of the following components:
•
Internal kit of Analyzer
•
Calibration standards of calibration parts
•
Measured piece
•
Test cable
•
Adapter
In order to reduce the effects of temperature drift during measurement, the following measures can be
taken:
•
Calibrate and measure after 30 minutes of preheating the microwave analyzer.
•
One hour before performing the calibration, open the box with the calibration piece and take the
calibration kit out of the protective foam.
•
Measured in a temperature-controlled environment, the microwave analyzer can guarantee that all
technical specifications meet the requirements within the ambient temperature of 23 °C ± 3 °C.
•
Ensure the temperature stability of the calibration parts and avoid unnecessary touching of the
calibration parts during the calibration process.
•
Ensure that the ambient temperature and the temperature deviation during calibration are within
±1 °C.
3
Inaccurate calibration
If the calibration is not accurate, the correct response of the device under test cannot be obtained during
the measurement. To ensure the accuracy of the calibration, the following factors should be considered:
•
Calibrate on the measurement plane that connects the kit under test, ensuring that the
measurement plane and the calibration plane are consistent.
•
Calibrate using a calibration kit that is consistent with the definitions made during the calibration
process.
4
Measurement Connection
Proper connections are necessary for obtaining the reproducible measurements. The following
measures should be taken when making measurement connections:
•
Constantly check and clean the connectors of all kits in measurement composition.
•
Use the correct connection method.
•
Avoid moving cables during measurements.
III. Improve Sweeping Speed
The fast sweeping speeds will increase measurement efficiency, and the following settings are optimized
for the microwave analyzer to achieve the fast sweeping speed:
