If you want to know how to use digital optical audio cable, you have to understand for what it is destined. Digital optical audio cable is used to transfer compressed digital audio signal from the source (computer, CD-, DVD-player) to AV Receiver or speaker system. Optical audio cable is good to use at small distances, where there is a high risk of radio-frequency noise (interference). This cable does not use electricity to transfer the digital signal from source to receiver, therefore it is not a source of noise, produces less sound distortion and allows to make galvanic isolation.
Usually audio cables that use optical fiber, applies S/PDIF (Sony/Phillips Digital Interconnect Format) interface for sound transmission. There is another version of the execution of this interface based on the coaxial cable. It’s important, that digital optical interface is very suitable for multi-channel audio transmission by one speaker cable, that is incredible in comparison with other classic types of connections. This is facilitated by the using of multimode optical fiber.
Instruction for how to use digital optical audio cable.
1)First of all, make sure that your devices are equipped with digital optical inputs and outputs. This plugs have a rectangular form and they are compatible with digital optical audio cable connector and have protection against incorrect connection.
2)Install all drivers and application software, which came in kit with sound card or motherboard, according to manufacturer’s instructions. This will allow the computer and external audio receiver of the signal correctly to identify optical connection when you connect. Such step you will not need to perform on consumer audio devices, specially designed to work through a digital fiber optic cable. For example, digital home theater system has a built-in electronic circuit, that independently determines when you connect the signal by digital optical audio cable.
3)Remove the protective caps from the ends of the cable and from them plugs on the audio devices (if there are any).
4)Connect one end of the cable to the optical output at source device (computer sound card, DVD-player, PlayStation, Xbox).
5)Connect the other end of the digital optical audio cable to the optical input at receiver device, such as AV Receiver. Usually at home audio equipment such port is designated as S/PDIF, Digital Optical In, or TOSLINK.
6)Unplug all other audio cables between devices (Coaxial, RCA cables), because audio system can continue to use them by default. Or use the input Selector at Amplifier or AV Receiver.