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AWR1642: range profile dB offset

Part Number: AWR1642


Hello, TI team,

I have a question related to the URL below.
e2e.ti.com/.../3655171

If ADC output data is scaled down to avoid overflow, the value will be smaller, so to convert the value back to the original scale, I guess the positive offset is needed,
but a compensation value in mmWave.js is negative value.
(in my setting, it is approximately minus 20dB. Range-profile value minus 20dB is displayed on demoVisualizer.)
Why is the offset negative direction?