If you would like to configure your MOTU interface as a digital-to-analog converter (instead of an A/D converter), follow the steps above but choose digital inputs and analog outputs rather than analog inputs and digital outputs. This configuration will be similar for all MOTU audio interfaces with features similar to the 828mk3 (such as the 896mk3, UltraLite mk3, and Traveler mk3). If the 828mk3 is the master clock device, then set the second device's clock source to its ADAT optical input, and set its sample rate to match the 828mk3's sample rate. Connect the 828mk3's ADAT A output to the ADAT optical input of another device.Wait about one minute for the new settings to be saved to the 828mk3's internal memory, and then disconnect the FireWire cable from the back panel of the interface.However, these settings may be changed under some circumstances. Generally, the 828mk3's clock source should be set to Internal when it is being used as an A/D converter. The 828mk3's sample rate should match the sample rate of any connected digital audio devices. Set the 828mk3's sample rate and clock source appropriately. Then continue with Bus 3 (Analog 5-6 to ADAT A 5-6) and Bus 4 (Analog 7-8 to ADAT A 7-8). Repeat the process with Bus 2 to route analog inputs 3-4 to ADAT A outputs 3-4.Mute all input channels except Analog 1-2.Set the mix bus output to ADAT A 1-2 by selecting the output pair in the bus output menu above the mix bus master fader.Choose the Mixes tab, and select Bus 1 in the mix bus menu.
(They will now appear as Analog 1-2, Analog 3-4, Analog 5-6, and Analog 7-8.) Choose the Inputs tab, and then enable the Stereo button on the channel strips for analog inputs 1, 3, 5, and 7. Connect the 828mk3 to the computer by FireWire, and turn on the interface.In this example, an 828mk3 will be configured as a standalone A/D converter using its ADAT optical output by patching its analog inputs to its ADAT outputs:
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