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→Clock Options/SPDIF Source
== Clock Options/SPDIF Source ==
The interface usually has the option to select the SPDIF clock source as internal or external (master or slave). Many devices require being the clock source; and in this case, you must select external or slave as well as setting the correct sample rate to sync with the device. Otherwise, you should use internal/master and set the sample rate at the rate that you want to record in. The DAW may be able to override this value, but it's best to set it to the same to keep everything consistent and minimize confusion and risk of error.
For interfaces that have both coaxial and TOSLINK SPDIF input, you should be able to select which ones you are using for input and output.