Optical Fiber Cable Construction And Standards - Mitsubishi Electric Melsec-k Instruction Manual

[
7. CAUTIONS FOR HANDLING OPTICAL FIBER CABLE
mEl $ JEaK
Number of cores
7.2 Optical Fiber Cable Construction and Standards
The construction and standards for optical fiber cables are shown in Table 7.1.
1 core
Outer sheath
Profile
Cable construction
Black PVC
GI
A B D
Reinforced single-core
optical cable (5 mm @)
Plural-cores optical fiber
cable
Single-core optical fiber
Clad Primary coating
Sin gl e-core
optical fiber
: : : E i r
cable
/
\
Primary coating
Clad
I
Con s t ruction
Outer sheath
Outer sheath
I
Ou
t e
r sh ea th
I
Approximately 5 mm
I
Finished outside diameter
I
Approximately 3 mm
Approximately 11 mm
110 mm
1
Allowable bending radius
I
20 mm 30 mm
I
Allowable tensile force
I
30 kg 50 kg
Approximately 25 g/m
60 kg
Approximately 100 g/m
- -
Weight
I
Approximately 10 g/m
I
1 core 1 core
I
Transmission loss
I
3.5 dB/km or less
( A
=
0.85pm)
I
Transmission band
I
200 MHz/km or less
(A
=
0.85pm band LD)
I
Core
I
Quartz glass, diameter: 50
*
3pm
CI ad
I
Quartz glass, diameter: 125
f
3pm
Core eccentricity and
elliptic ratio
Each 6% or less
I
Primary coating Silicone resin, approximately 0.4 mm @
I
I
Secondary coating
Nylon, 0.9 k 0.1 mm
@
I
Shock absorber
I
Nylon fiber
I
Tension member
I
PE-sheathed steel wire, approximately 2 mm @
I
Intervening wire Polyethylene wire, approximately 3 mm
4
I
1
Win ding
I
Plastic tape
Table 7.1 Specifications o f Op'ical Fiber Cables
93