192 I/O Guide26
When you have properly aligned the incoming
peak signal levels to match the calibration refer-
ence level, both Automatch indicator arrows
will light: the up arrow red and the down arrow
blue.
Above the fader is a peak volume indicator. This
indicator will show the dB level above and be-
low your chosen headroom value. If the peak in-
dicator is showing –19.1, you are –1.1 dB below
a headroom value of –18 dB. If the display is
showing –16.5, you are +1.5
dB above your
headroom value of –
18 dB.
4 When you have finished, deselect Options >
Calibration Mode.
Calibrating a System with Both
192 I/O and 96 I/O Audio
Interfaces
The “A” trim on the192 I/O is factory preset
with 18 dB of headroom in its +4 dB line level
operating mode. The 96 I/O, however, is fixed at
14 dB of headroom and its inputs are not adjust-
able.
When setting up a 96 I/O (particularly in sys-
tems using a combination of the 192 I/O and
96 I/Os), it may make sense to calibrate all I/Os
for –14 dB headroom. This helps ensure that re-
corded audio files have the same relative levels
regardless of which interface is used for record-
ing.
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