Wire the UCMs
BMTK-SVN01D-EN 31
®
Table 8. Specifications for Echelon Level 4 compliant cables
Specification Value
dc resistance
(Maximum resistance of a single
copper conductor regardless of
whether or not it is solid or
stranded and regardless of
whether or not it is metal coated.)
18.0 Ω/1000 feet at 20°C
dc resistance unbalance (maxi-
mum)
5%
Mutual capacitance of a pair
(maximum)
17 pF/foot
Pair-to-ground unbalance (maxi-
mum)
1000 pF/foot/1000 feet
Characteristic impedance 772 kHz 102 Ω ± 15%
1.0 M Hz 10 0 Ω ± 15%
4.0 MHz 100 Ω ± 15%
8.0 MHz 100 Ω ± 15%
10.0 MHz 100 Ω ± 15%
16.0 MHz 100 Ω ± 15%
20.0 MHz 100 Ω ± 15%
Attenuation (maximum dB/1000
feet at 20°C)
772 kHz 4.5 dB/1000 feet at 20°C
1.0 MHz 5.5 dB/1000 feet at 20°C
4.0 MHz 11.0 dB/1000 feet at 20°C
8.0 MHz 15.0 dB/1000 feet at 20°C
10.0 MHz 17.0 dB/1000 feet at 20°C
16.0 MHz 22.0 dB/1000 feet at 20°C
20.0 MHz 24.0 dB/1000 feet at 20°C
Worst-pair near-end crosstalk
(minimum)
(Values shown are for information
only. The minimum NEXT cou-
pling loss for any pair combina-
tion at room temperature is to be
greater than the value determined
using the formula NEXT
(FMHz)>NEXT(0.772)-15log10 (FMHz/
0.72) for all frequencies in the
range of 0.772 MHz–20 MHz for a
length of 1000 feet.)
772 kHz 58 dB
1.0 M Hz 5 6 dB
4.0 MHz 47 dB
8.0 MHz 42 dB
10.0 MHz 41 dB
16.0 MHz 38 dB
20.0 MHz 36 dB
dc resistance unbalance (maxi-
mum)
5%