3. Cabling
3-107
TI 33Q01J10-01E
To Use GI 62.5/125 Optical Fiber Cable
It is recommended to use a GI 50/125 optical fiber cable (core diameter 50 µm, clad diameter 125
µm) for an optical bus repeater.
To use a GI 62.5/125 optical fiber cable, follow the procedure below. Compared to a GI 50/125
optical fiber cable, a large volume of light is emitted by connecting a GI 62.5/125 optical fiber
cable to the output connector of an optical bus repeater. If the input connector of an optical bus
repeater receives a larger volume of light than the maximum volume of light to be received,
data transmission fails. Therefore, connect a GI 62.5/125 optical fiber cable according to the
procedure below.
1. To restrict a volume of light, you must insert a 10 m of GI 50/125 optical cord between the
output connector of an optical bus repeater and a GI 62.5/125 optical fiber cable in the field.
2. To connect the two types of cables, use an optical adapter inside the splicing box located
under the floor near a cabinet to install an optical bus repeater.
F030902.ai
RDY
RCV
SND
OUT
IN
OPTICAL
LINK
RDY
RCV
SND
OUT
IN
OPTICAL
LINK
Bus 1
(Same as BUS 2)
Optical transceiver
Bus 1
Optical transceiver
Optical connectors
GI 50/125 GI 62.5/125
GI 62.5/125 GI 50/125
GI 62.5/125 GI 62.5/125
: Splicing box
: Optical adaptor
: Fusion point
GI 62.5/125 Optical cord
GI 62.5/125 Optical fiber cable
GI 50/125 Optical cord (10 m)
Figure Connection of GI 62.5/125 Optical Fiber Cable
Feb. 1, 2009-00
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