2-3
Section
Optical Ring System (GI Cable) Wiring
33
2-3
Optical Ring System (GI Cable) Wiring
This section describes how to wire the communications cables to a GI cable
Ring System Controller Link Support Board (3G8F7-CLK52-E).
2-3-1 Communications Cables
The following devices are required for the Optical Ring (GI) Controller Link Net-
work.
Use Optical Fiber Cables (Graded Index: GI) with the following optical specifica-
tions.
50/125
µ
m AGF Cable
Item
Minimum
Standard
Maximum
Unit
Conditions
Numerical
Aperture (N.A.)
---
0.21
---
---
Theoretical value
Transmission
loss
---
---
3.0 Lf
dB
0.5 km
x
Lf
λ
= 0.8
µ
m
loss
3.0 Lf + 0.2
0.2 km
x
Lf < 0.5 km
T
a
= 25
_
C
3.0 Lf + 0.4
Lf < 0.2 km
Connection loss ---
---
1.0
λ
= 0.8
µ
m, one location
Transmission
bandwidth
500
---
---
MHz
@
km
λ
= 0.85
µ
m (LD)
Note L
f
is fiber length in km, T
a
is ambient temperature, and
λ
is the peak wavelength
of the test light source.
62.5/125
µ
m AGF Cable
Item
Minimum
Standard
Maximum
Unit
Conditions
Numerical
Aperture (N.A.)
---
0.28
---
---
Theoretical value
Transmission
loss
---
---
3.5 Lf
dB
0.5 km
x
Lf
λ
= 0.8
µ
m
loss
3.5 Lf + 0.2
0.2 km
x
Lf < 0.5 km
T
a
= 25
_
C
3.5 Lf + 0.4
Lf < 0.2 km
Connection loss ---
---
1.0
λ
= 0.8
µ
m, one location
Transmission
bandwidth
200
---
MHz
@
km
λ
= 0.85
µ
m (LD)
Note L
f
is fiber length in km, T
a
is ambient temperature, and
λ
is the peak wavelength
of the test light source.
ST Connector
2-3-2 GI Optical Fiber Cable Wiring
All of the nodes in the Optical Controller Link Network are connected in a line
(daisy-chain configuration) with H-PCF Optical Fiber Cable.
Refer to the following diagram when making the connections.
Optical Fiber Cables
Connectors
Optical Ring System in
Token Bus Mode
