DATA SHEET
Cable type
Size: 7/8" - LD
EUPEN AG
Kabelwerk
Eupen 75 Ω CATV cables
7228 - Rev. 1 - 11.08.03
underground:
aerial:
cable
7228
A 7228
Units
Nominal
mm
copper wire
5.7
mm
gas-injected cellular PE
23.5
mm
corrugated copper tube
25.0
mm
mm
black polyethylene
1.5
28.0
< 28.3
.. X mm
mm
mm
AMS
7 x 3.15
12.5
43/28
cm
cm
daN
kg/km
20
30
225
640
daN
2
N/mm
1/°C
kg/km
1750
62000
23 x 10-6
845
Construction
INNER CONDUCTOR
Material and construction
Diameter
DIELECTRIC
Material
Diameter
OUTER CONDUCTOR
Material and construction
Diameter over outer conductor
OUTER SHEATH
Material
Thickness
Overall diameter
Cable with messenger
MESSENGER
Material
Construction
Diameter over messenger
OVERALL DIMENSIONS
Mechanical characteristics
Minimum bending radius
1x
10 x
Maximum pulling strength (without messenger)
Weight
Cable with messenger
Minimum breaking strength of messenger
Modulus of elasticity
Thermal coefficient of linear expansion
Weight
Electrical characteristics
Characteristic impedance
Capacity
Relative propagation velocity (velocity ratio)
DC-resistance of inner conductor at 20°C
DC-resistance of outer conductor at 20°C
Current rating (50 - 60) Hz
Dielectric voltage strength
Longitudinal attenuation at 20°C
a=
b=
5 MHz
10 MHz
30 MHz
50 MHz
100 MHz
200 MHz
300 MHz
400 MHz
470 MHz
600 MHz
800 MHz
860 MHz
1000 MHz
Return loss (3 peak values up to 4 dB lower are permissible)
5 - 470 MHz
470 - 862 MHz
Screening attenuation (30 - 1000 MHz)
Ω
dB/100m
dB/100m
dB/100m
dB/100m
dB/100m
dB/100m
dB/100m
dB/100m
dB/100m
dB/100m
dB/100m
dB/100m
dB/100m
75
50
88
0.68
0.98
43
6
α(f[MHz] ) = a.√f[MHz] + b.f[MHz]
0.104
0.00065
0.24
0.34
0.59
0.77
1.11
1.60
2.00
2.34
2.56
2.94
3.46
3.61
3.94
dB
dB
dB
> 26
> 22
>> 120
pF/m
%
Ω /km
Ω /km
A
kV
+/- 2
< 0.25
< 0.35
< 0.62
< 0.81
< 1.16
< 1.68
< 2.10
< 2.46
< 2.69
< 3.08
< 3.63
< 3.79
< 4.14