TASCAM Celesonic US-20x20 Reference Manual V2.10 - Page 29

7 - Operation modes Using the unit in audio interface mode When the AUDIO I/F MODE indicator on the front of the unit is lit, you can use the unit as an audio interface. NOTE The default sampling frequency in audio interface mode is 44.1 kHz. Changing the sampling frequency in audio interface mode Set it in the DAW software you are using.Using the unit in digital mixer mode When the MIXER MODE indicator on the front of the unit is lit, you can use the unit as a digital mixer. NOTE The default sampling frequency in digital mixer mode is 44.1 kHz. The sampling frequency can be changed in digital mixer mode. You can change the sampling frequency (44.1 kHz by default) in digital mixer mode in the following manner. 88 Windows Control Panel w Sound window w Speakers TASCAM US-20x20 w Properties (p) w US-20x20 Properties Advanced tab w Default Format 88 Mac Applications folder w Utilities folder w Audio MIDI Setup w Audio Devices window w US-20x20 w Format NOTE In digital mixer mode, the sampling frequency can also be changed from DAW software. Making settings without the Settings Panel This unit is designed to allow basic settings to be made using the Settings Panel. Even when the Settings Panel is not available, however, clock source and AD/DA mode settings can be made using hardware controls. These functions are provided for emergency situations when a computer is unavailable. Making settings using hardware controls 1. Turn the unit on while pressing the MODE button. The MIC PRE, AUDIO I/F and MIXER MODE indicators and the Input 1 signal/overload indicator light. signal/overload indicator 2. Press the MODE button to change the lit signal/overload indicators and choose the desired clock source and mic preamp mode. The lit signal/overload indicators (1-8) show the unit's operation state as follows. Indicator number 1 2 3 4 5 6 7 8 Status when indicator lit Sample clock set to INTERNAL. The built-in 44.1kHz clock is used. 88.2kHz clock is used when indicator 5 is lit. 176.4kHz clock is used when indicator 7 is lit. The clock signal input through the COAXIAL IN connector is used as the sampling clock source. Sample clock set to INTERNAL. The built-in 48kHz clock is used. 96kHz clock is used when indicator 5 is lit. 192kHz clock is used when indicator 7 is lit. The clock signal input through the OPTICAL IN connector is used as the sampling clock source. Indicator 5 must also be lit if a double-rate (88.2/96kHz) clock signal is input. Indicator 7 must also be lit if a quadruple-rate (176.4/192kHz) clock signal is input. Use a double-rate (88.2/96kHz) sampling clock source. The clock signal input through the WORD IN connector is used as the sampling clock source. Use a quadruple-rate (176.4/192kHz) sampling clock source. Use the DA (digital input to analog output) mic preamp mode. When unlit, the AD (analog input to digital output) mode is used. Example: Two indicators (1 and 5) light when set to use 88.2kHz internal clock. NOTE • The clock source and mic preamp modes cannot be set separately. • If the unit is not used for some time, it will revert to ordinary powered-on status. In this case, the settings last set using the "Save into the unit" item will become active. (See "Saving Settings Panel settings to the unit" on page 27.) 3. Press and hold the MODE button to confirm. The signal/ overload indicators for the selected setting will blink. TASCAM US-20x20 29