Usb Operation - Art Project Series User Manual

USB OPERATION

Connect your analog jacks. If you are using one of the analog
MONITOR outputs for local low latency monitoring, connect that
to your monitor system or headphones. Next, set the front panel
controls for proper operation as per the previous sections. Then
connect the USB cable to the appropriate input on your computer
and lastly to the USB connector on the USB Pre IV.
Once the USB connection is made and your computer is on, the
unit will automatically connect and try to set your computer "De-
fault Audio Device" to be "USB IV". The same settings may need
to be made in your particular audio application as well (check
your application instructions). These settings should be made
while the USB Pre IV and computer are connected and powered
on.
Your computer audio output "Speaker" is now set to be the (USB
IV 1/2) or (USB IV 3/4) and playback audio is routed to the USB
Pre IV. This must be done while the USB Pre IV is connected to
the computer and powered on. If you prefer, you can have the
computer output routed to your computer speakers instead of the
USB Pre IV monitor output jack, by selecting your computer
speakers for "OUTPUT" instead of "USB IV" in the above setup
procedures. After the above settings are made, your computer
will automatically reconfigure itself back to these settings every
time the USB Pre IV is reconnected to the computer. Your re-
cording software may also select which inputs or outputs are be-
ing used.
At this point your recording software will select and control which
channels are being recorded and which channels are being mon-
itored. There are many computer recording software packages
available today that allow for multi-track recording.
Latency, the time delay between your audio input and the USB
output to your computer, is very short depending on the speed
of your computer. The latency of your system may be tweaked
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