Trane Building Automation System manual Specifications for Echelon Level 4 compliant cables

®

Wire the UCMs

Table 8. Specifications for Echelon Level 4 compliant cables

Specification		Value
dc resistance		18.0 Ω/1000 feet at 20°C
(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.)
dc resistance unbalance (maxi-		5%
mum)
Mutual capacitance of a pair		17 pF/foot
(maximum)
Pair-to-ground unbalance (maxi-		1000 pF/foot/1000 feet
mum)
Characteristic impedance	772 kHz	102 Ω ± 15%
	1.0 MHz	100 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	772 kHz	4.5 dB/1000 feet at 20°C
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	772 kHz	58 dB
(minimum)
	1.0 MHz	56 dB
(Values shown are for information
	4.0 MHz	47 dB
only. The minimum NEXT cou-
pling loss for any pair combina-	8.0 MHz	42 dB
tion at room temperature is to be
	10.0 MHz	41 dB
greater than the value determined
	16.0 MHz	38 dB
using the formula NEXT
(FMHz)>NEXT(0.772)-15log10(FMHz/	20.0 MHz	36 dB
0.72) for all frequencies in the
range of 0.772 MHz–20 MHz for a
length of 1000 feet.)
dc resistance unbalance (maxi-		5%
mum)

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