VT RTA-168A/B Manual Rev. 1.5
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product package. Please refer to the calibration data sheet provided and enter the calibration
data in the respective highlighted fields in the Calibration Setting dialog box (see figures
below). Note that different calibration data are required for different Windows versions. The
Calibration Setting dialog box is opened via [Setting]>[Calibration] in Multi-Instrument.
You can adjust the sound level measurement range by adjusting the input gain of the XLR-
to-USB sound card through its hardware gain switch and/or the software.
1.5.1 Under Windows XP or a Windows Version Before XP
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.
Adjustment of Input Gain via Software
Under Windows XP or a Windows version before XP, the input gain of the XLR-to-USB
sound card is not adjustable. Neither the Recording Control under Windows Control Panel
nor Multi-Instrument can adjust the input gain.
1.5.2 Under Windows Vista
Input of the Sound Level Calibration Data
