Meters are provided for :-
Main Stereo Output (30 segment)
Line Inputs 17-24/Sub-group Outputs (20 segment)
DAW Inputs (20 segment)
MIC/LINE Inputs (3 segments)
0VU is calibrated to a nominal operating level of +4dBu. Which in turn is relative to a typical EBU
calibration of +18dBu = 0 dBFS. 0 dBFS is your absolute maximum digital level (full scale) and
should be avoided at all costs - digital clipping is not a pleasant sound.
As such the bargraph meter scale on ASP4816 is calibrated in dBFS, such that +4 dBu = 0VU = -14
dBFS. Therefore, a nominal
operating level of 0VU will result in 14 dB of headroom in your digital recording platform (providing
your AD/DA converters are aligned to 0 dBFS = +18 dBu.
14 dB of headroom is very useful as most music sources (except for the huge dynamic range of an or-
chestra) have crest factors (the difference between average (RMS) and peak level) of around 12-20 dB.
ASP4816 therefore provides ample headroom for your beautifully crisp transient sources.
Overview
Metering - continued
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