ESI Waveterminal U24 - Manual (Page 11)

11
Digital connector
1. Coaxial connector
S/PDIF (IEC-958) uses 75ohm Coaxial cable and RCA connectors.
U24 uses RCA connector that is the same cable as used in video
transmission. Shown below is conventional RCA connector and you
can use this for transmitting/receiving S/PDIF digital audio data
from/to U24.
2. Optical connector
Optical version of S/PDIF interface, which is usually, called Toslink,
because it uses Toslink optical components. The transmission media is
1mm plastic fiber and the signals are transmitted using visible LED light.
The optical signals have exactly same format as the electrical S/PDIF
signal, they are just converted to light signals.