VT RTA-168A/B Manual Rev. 1.5
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1.10 Operation Notes
The sound level of the test signal should be at least 30 dB higher than that of the
background noise in order to achieve sufficient signal-to-noise ratio in the measurement.
The volume of the test signal and the input gain of the RTA should be adjusted such that
the input peak level (displayed at the upper right corner of the screen) is in the range of
10%~95% (preferably around 85%). This is to ensure sufficient measurement accuracy
and at the same time avoid distortion caused by input saturation.
When the input peak
level reaches 100% (the bar turns fully red), the results cannot be trusted.
You can change the number of frames for averaging by right clicking anywhere within
the Spectrum Analyzer window and selecting [Spectrum Analyzer Processing]> “Inter-
Frame Processing”> “Linear Average” and choose a number in the “Frames” field.
You can change the frequency weighting by right clicking anywhere within the Spectrum
Analyzer window and selecting [Spectrum Analyzer Processing]>“Intra-Frame
Processing” and choose a weighting profile in the “weighting” field.
You can save a panel setting file via [Setting]>[Save Current Panel Setting]
You can load a panel setting file via [Setting]>[Load Panel Setting].
You can configure your own Hot Panel Setting Toolbar via [Setting]>[Configure Hot
Panel Setting Toolbar].
You can lock the panel setting via [Help]>[Lock Panel Setting].
You can unlock the panel setting via [Help]>[Unlock Panel Setting].
You can set or change the password for unlocking the panel setting via
[Setting]>[Change Password].
