Focusrite ISA TWO, Руководство пользователя

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Channel Meters
The LED meters indicate level at the channel output connectors. The scale is in dBFS,
ie., the level in dB, relative to maximum output (reached when the ‘0’ LED illuminates).
The default calibration is for ‘0’ to indicate a signal level of 22 dBu.
Meter Calibration
The level at which the ‘0’ LED illuminates can be adjusted using the Peak Meter Calibration
pot on the rear panel. The default setting of 0 dBFS = 22 dBu occurs when the knob is in
its central, detent position.
Rotating the pot sets the value between 0 dBFS = 16 dBu (fully anticlockwise) and 0 dBFS
= 24 dBu (fully clockwise).