CAA-100 Series User’s manual
Shineway Technologies, Inc.
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38-
Need to re calibration if temperature changes a lot
Do not need re calibration if measuring points reduced.
Do not need re calibration if distance, cable parameters, window function changed.
4.4 Freq-Return Loss, Freq-VSWR, Cable-Loss measurement
The measurement can be used to verify the power matching of the port or the loss of the cable .X axis
coordinate is frequency, Y axis coordinate are VSWR, or the return loss, or loss of cable separately.
In the following ways users can enter the measurement interface.
In the main interface, click on the "measurement" icon, and then click the corresponding icon
In the measurement interface, the user can do a variety of measuring operation.
Need to set proper frequency parameters before test
Need to confirm that the system is in "calibration valid" state before test
The minimum frequency interval is 1MHz
4.5 DTF-VSWR,DTF-Return Loss measurement
The measurement can be used to verify the power matching performance of different position of cable and
antenna system, then user know a certain position joint connection quality. X axis coordinate is distance, Y axis
coordinate is VSWR, or return loss
In the following ways users can enter the measurement interface.
In the main interface, click on the "measurement" icon, and then click the corresponding icon
At the measurement interface, the user can do a variety of measuring operation.
Need to set proper frequency ,distance, cable parameters and window function before test
Need to confirm that the system is in "calibration valid" state before test
The maximum measuring range and accuracy associated with frequency parameters, the propagation
velocity of cable
The minimum frequency interval :1M
The user can set the unit in the DTF parameters window units (metric and Imperial)
4.6 Smith Chart
The Smith Chart is a graphical tool for plotting impedance data versus frequency. It converts the measured
reflection coefficient data into impedance data and displays it in a manner that makes the Smith Chart a useful
