ShinewayTech CAA-100 Series, Руководство пользователя

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CAA-100 Series User’s manual
Shineway Technologies, Inc. - 36-
remove cable loss impact in the calculation connector return loss. The unit of cable loss is dB/ meter.
Users can select cable from pre-defined cable list. Usually the cable loss will vary with frequency .System will
automatically calculate the cable parameters According to the cable parameters and working frequency.
If the user does not know any cable information and parameters, but have a cable at hand, users can use the
system tools("cable" cal)to get these parameters.
Click on the "cable cal" button in the DTF parameter interface, system will pop up one window. Users enter the
measured actual length of cable (0.5~10 m); one end of the cable is connected to the RF port, the other end
connected to open load or connected to nothing;. Once the calibration is completed, the cable parameters will
automatically refresh in DTF parameter interface.
4.2.3 Set Window Function
In the distance to the fault analysis, if the location of the two connectors are close, because of the influence of
spectral leakage, two connectors will be influenced each other. If return loss of one connector is much smaller than
another one , most probably it will be lost and can’t be recognized. In this case users should choose to use the
window function.
System support four types window function: rectangle window, Hamming window, Keyser window, Blackman
window .
4.3 OSL Calibration
The user needs to confirm the system is in "calibration valid" state before a test.
Before one test, system need to know beforehand the 3 known load (open /short/50Ohm) test results. User
can import the previous calibration data; or do OSL mechanical calibration (Flexcal calibration)before test.
The user can enter the calibration interface by the following ways.

In the main interface, click on "calibration" mode icon