Hall Research HR-101-S - Manual (Page 5)

Model HR-101
5
meters OM2 or OM3 cables are recommended, and for distances of over
500 meters OM3 cable is recommended.
Hall Research can provide pre-terminated fiber optic cables at various
lengths up to 1,000 meters at competitive prices as shown below.
OM2 Cables: CST-OM2-length (length = 100, 300, or 500 meters)
OM3 Cables: CST-OM3-length (length = 700, 900, or 1,000 meters)
4.0 HR-101-R Description
The Model HR-101-R Receiver has an ST fiber optic input connector to
receive audio from the sender. It provides a stereo line level output on
3.5mm mini-stereo jack and a SPDIF digital audio output on a RCA
connector.