VM-3100: Making Changes to the Attenuation of a Channel
Use this procedure to adjust the attenuation of a channel. This is used for
digital signals whose input levels are too hot for the mixer and need
adjustment in order to have better control of the signal level:
1) Hold down SHIFT and press SELECT for the channel that you want to make
2) Use the UP or DOWN CURSOR to select "ATT."
3) Use the VALUE dial to adjust the value from 0 dB to -18 dB.