These are RCA connectors that send and receive two channels of digital audio in the S/PDIF (Sony/Philips Digital Interface) format.
S/PDIF OUT transmits two-channels of digital audio, which appear as outputs 9 and 10 in the Onyx 400F Console and in the DAW software application.
S/PDIF IN receives two-channels of digital audio, and appears as inputs 9 and 10 in the Onyx 400F Console and in the DAW software application.
The S/PDIF I/O on the Onyx 400F supports sample rates up to 192 kHz. This means that all ten channels can be used, even at the highest sample rate supported by the Onyx 400F!
Note: Transferring digital audio over a cable generates EMI (electromagnetic interference) around the cable. Use high-quality 75-ohm coaxial cable for the S/PDIF connections to minimize the EMI noise radiated around the cable.
Tip: A 75-ohm composite video cable can be used for a S/PDIF connection.
In general, the shorter the cable length, the less effect it has on the quality of the signal. The maximum recommended length for a S/PDIF cable is limited to 10 meters (about 32 feet).
Note: Strictly speaking, S/PDIF is limited to 20-bits because four bits are reserved for “user bits.” However, in the Onyx 400F, the four user bits are used for digital audio and 24-bits are transmitted (this is an accepted optional implementation of S/PDIF).
This is a standard 3-prong IEC power connector. Connect the detachable linecord (included in the box with your Onyx 400F) to the power receptacle, and plug the other end of the linecord into an AC outlet. The Onyx 400F has a universal power supply that can accept any AC voltage ranging from 100 VAC to 240 VAC. No need for voltage select switches. It will work virtually anywhere in the world. That’s why we call it a “Planet- Earth” power supply! This also means that it is less susceptible to voltage sags or spikes, providing greater electromagnetic isolation and better protection against AC line noise.
