GarettCom 5843HRT - 3.7 Selection of Fiber Optic Cable (FOC)

Models 5843, 5844, 5843S and 5844S
RS-232 or TTL
3-
6
3.7
SELECTION OF FIBER OPTIC CABLE (FOC)
Fiber optical cable is available in several formats; simplex, duplex, and breakout. FOC is
also available in various diameters and tensile strengths. Tensile strength is important for
longer life expectancy.
Simplex FOC is desirable for loop operations. It has one optical conductor and can be
connected from the transmitter of one Link/Repeater to the receiver of the next
Link/Repeater in the loop.
Duplex FOC has two optical conductors and is a convenient form when connecting two
units Point-to-Point.
Breakout cable is a duplex FOC that has extra strength members added and is suit-
able for burial.
The following are the specifications of multi-mode FOC offered by DYMEC and is the recommended
m
inimum standard for optimum performance.
M
ETRIC-TO-ENGLISH UNIT CONVERSIONS
MULTIPLY
BY
MULTIPLY
BY
Millimeters
→
→→
→
Inches
0.03937
Kilograms
→
→→
→
Pounds 2.2046
Centimeters
→
→→
→
Inches
0.3937
Kg/Km
→
→→
→
Pounds/1,000 Ft 0.67197
Meters
→
→→
→
Feet
3.2808
New
tons
→
→→
→
Pounds 0.22481
Kilometers
→
→→
→
Feet
3280.8
N/Cm
→
→→
→
Pounds/inch 0.57101
Kilometers
→
→→
→
Miles
0.62137
Simplex Duplex Breakout
Fiber Count 1 2 2
Fiber Material Glass Glass Glass
Attenuation [dB/km] 3 3 3
Diameter [mm] 3.0 3.0 x 6.5 7.0
Weight [kg/km] 8.0 16.0 50
Tensile load - Short Term [N] 500 1000 1200
Tensile load - Long Term [N] 300 500 500
Minimum Bend Radius - With Load [cm] 5 5 14
Minimum Bend Radius - No Load [cm] 3 3 7
Crush Resistance [N/cm] 750 750 2200
Impact Resistance [Cycles] 1000 1000 2500
Flex Resistance [Cycles] 7500 7500 2000
Operating Temperature [
o
C] -40
o
to +85
o
-40
o
to +85
o
-40
o
to +85
o
Storage Temperature [
o
C] -55
o
to +85
o
-55
o
to +85
o
-55
o
to +85
o