Specifications

Chapter 3: Installation Overview 21
This allows you, for example, to quickly make a
single output assignment in a Pro Tools session
(A 1-2), which is then mirrored to the analog
outputs for your monitor system, DAT Deck,
and/or a S/PDIF device, with no extra load on
your Pro Tools system.
You can multi-assign any available 192 I/O out-
puts in the Hardware Setup dialog.
To route Pro Tools channels to multiple 192 I/O
outputs:
1 In the Hardware Setup dialog, click the pop-up
for the Pro Tools output pair you wish to multi-
assign (for example, 1–2, 3–4, 15–16). By de-
fault, all pairs are assigned to a 192 I/O output
pair, except for Analog Outputs 1–2 which are
by default mirrored to the two-channel
Digital [Encl] pairs.
2 Select one of the outputs to which you want
to route the output from Pro Tools.
3 While pressing Ctrl, select each additional
output destination.
Selecting multiple output formats does not af-
fect time slot count. The multiplexing of audio
is done in the peripheral rather than in software
or the computer.
Setting Operating Levels
There are specific windows within the Hardware
Setup dialog in which to make I/O settings spe-
cific to your 192 I/O. These include setting in-
put and output operating levels.
Choosing +4 dBu or –10 dBV
Operating Levels
The 192 I/O features two DB–25 breakout con-
nectors for two sets of eight inputs each, at
+4 dBu and –10 dBV respectively.
There are no –10 dBV outputs, however; analog
outputs break out from a single DB–25 output at
+4 dBu operating levels.
About Output Levels
It is important that you determine which line
level is appropriate for your studio. In +4 dBu
operating mode, the 192 I/O is a 24-bit digital
audio device capable of producing audio signals
up to + 26 dBu across +4 dBu input/output. The
default headroom value is 18 dB. This translates
to a maximum output of +22 dBu.
Hardware Setup dialog with 192 I/O as the Primary
audio interface with Default settings