VT RTA-168A/B Manual Rev. 1.5
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If you right click “Microphone (USB Audio CODEC)” and select “Properties”, the right part
of the figure above will be shown. You can then adjust the input gain through the
“Microphone” slider.
1.5.4 Under Windows 8/8.1/10
Input of the Sound Level Calibration Data
Note the calibration data in the following figure are examples only, you should enter the
actual calibration data provided inside the product package.
