STB8851 Impedance Analyzer is a new generation of impedance testing instrument successfully developed by adopting the principle of automatic balancing bridge. On the one hand, it breaks through the 120MHz frequency bottleneck; on the other hand, based on the Windows 10 operating system, it realizes a fully computerized operation interface, making the test smarter and easier. Next, we will take the testing of piezoelectric ceramic materials as an example to introduce the specific usage of the impedance analyzer.
a. Warm up the machine for 20 minutes before using the instrument.
b. Calibrate the instrument: Press the calibration button to calibrate the open circuit, short circuit, and load in sequence. Place the material to be tested on the fixture, where the red is the positive pole and the black is the negative pole. The positive pole is connected to the HI terminal, and the negative pole is connected to the LO terminal.
It should be noted that several relatively clear parameters must be confirmed before testing:
① Determine the starting voltage: the starting voltage (1V) applied to the piezoelectric ceramic material
② Determine the frequency range: 1KHz-2KHz
③ Confirm the test parameters: impedance
c. Test: scan – measure level – test voltage – select impedance (Z) – auto scale (Auto set) – present impedance curve.
All in all, the usage of the impedance analyzer is roughly as mentioned in the above text. It is especially important that no matter what kind of material it is, it must first be confirmed that the applied starting voltage (AC/DC/AC and DC mixed) is sufficient to start the tested material; secondly, it must be confirmed that the frequency range is within the test range of the tested material Inside; finally specify the items to be measured, and add them to the instrument parameters of the impedance analyzer, and then carry out the impedance test.
