TEAC US-1800 US-1800 owners manual - Page 12

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. 12 TASCAM US-1800