TDR-410 OPERATING MANUAL version 1.03
16
13 Typical Cable V
P
and Impedance Values
Cable type
Insulation type
V
P
Electricity
paper saturated with oil
Cross-linked Polyethylene
paraffin
polyethylene
PTFE
paper
polyethylene foam
air
0.50
– 0.56
0.52
– 0.58
0.64
0.67
0.71
0.72
– 0.88
0.82
0.94
– 0.98
Phone
polyethylene outer diameter 0.912 mm
polyethylene outer diameter 0.643 mm
polyethylene outer diameter 0.511 mm
polyethylene outer diameter 0.404 mm
gel, outer diameter 0.912 mm
gel, outer diameter 0.643 mm
gel, outer diameter 0.511 mm
gel, outer diameter 0.404 mm
paper outer diameter 0.643 m
paper outer diameter 0.511 mm
paper outer diameter 0.404 mm
0.69
0.68
0.66
0.65
0.68
0.65
0.64
0.63
0.69
0.68
0.66
CCTV
QR PARA III
PARA I
T, TR
TX, TX10
RG6, RG11, RG59
Times Fiber RG-59
Dynafoam
0.88
0.82
0.87
0.89
0.82
0.93
0.90
Data transmission
RG58
RG58U
UTP 26
Thinnet
Ethernet
Token Ring
Twinaxial Air
Twinaxial
Thicknet
RG58
RG58/U
Twisted Pair
U/UTP cat. 5e
U/UTP cat. 6
0.78
0.76
0.64
0.66
– 0.70
0.77
0.78
0.80
0.71
0.77
0.78
0.66
0.64
– 0.66
0.67
0.67
Note:
TDR-410 measures the distance to a fault in a cable or the cable length with an accuracy spec-
ified in the technical specifications. The current accuracy of the measurement depends on:
- how the the propagation factor V
P
was determined,
- its stability on the whole lenght of the tested cable.
Summary of Contents for TDR-410
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