Tascam US-1800 Manual De Usuario

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TASCAM US-1800
4 − US-1800 Control panel settings
Overview
The Control Panel lets you make various settings for the 
US-1800’s functionality.
On Windows OS, the US-1800 Control Panel shortcut can 
be found in the Windows Start menu > Control Panel or 
the Start menu > All Programs > TASCAM. On Mac OS X, the 
US-1800 Control Panel is located in the Applications folder. 
Other useful audio and MIDI settings for Mac OS X can be 
found in Applications/Utilities/Audio MIDI Setup.
[Windows Control Panel]
[Mac OS X Control Panel]
Control panel settings
Audio Performance
The US-1800 driver temporarily stores input and output 
audio sample in buffers. The size of these buffers can 
be adjusted. A smaller buffer size will reduce the delay 
when monitoring the audio signal, but will require 
your computer to perform the processing faster.  If the 
processing does not occur in time (e.g., if other system 
operations are occurring), you may hear clicks, pops, or 
dropouts in the audio signal. A larger buffer size provides 
more safety against such problems caused by other 
system activities, but will produce greater delay when 
monitoring the audio signal. You should select the buffer 
size that works best for your system.
On the Windows version of the US-1800 Control Panel, 
the Audio Performance setting permits you to adjust the 
buffer size that will be used by all audio applications. The 
lowest latency setting is the minimum buffer size, and the 
highest latency setting is the maximum buffer size.
On Mac OS X, the buffer size is determined by each 
audio application. Consequently, there is no “Audio 
Performance” setting on the Mac OS X version of the 
US-1800 Control Panel. Some applications select the 
buffer size automatically while others permit the user 
to select the buffer size. Please consult your audio 
application’s documentation for details.
Sample Clock Source
The clock source can be set to Automatic or Internal. When 
using digital input, set this to Automatic.
Automatic
• 
 (default): If a clock signal is input through 
the 
DIGITAL IN
 jack, it is used. If no signal is input 
through the 
DIGITAL IN
 jack, this unit’s internal clock is 
used.
Internal
• 
: This unit’s internal clock is always used.
Digital Output Format
Set the digital output format to AES/EBU or S/PDIF.
Digital Output Channels
The 
DIGITAL OUT
 jack outputs either digital signals of 
LINE 
OUTPUTS 1/2
 or 
3/4
. You select which pair of signals to 
output using this item.
CAUTION
When using the digital input (
DIGITAL IN
), set Sample 
Clock Source to automatic, and set the connected device 
as the clock master. Devices that cannot function as a 
clock master cannot be used with this unit. When the 
digital input (
DIGITAL IN
) and digital output (
DIGITAL OUT
are used at the same time, if the Control Panel Sample 
Clock Source is set to internal, the DIGITAL IN signal cannot 
be received, so the DIGITAL OUT sound is returned to the 
DIGITAL IN as is, resulting in a feedback loop.