Echelon FT 3150 Smart Transceiver - Manual (Page 131)

FT 3120 / FT 3150 Smart Transceiver Data Book 125
Qualified Cables
Table B.2 General Specifications
Table B.3 Impedance Characteristics
Table B.4 Attenuation (dB/1000 feet at 20°C) Maximum
Specification Value
DC Resistance (Ohms/1000 feet at 20°C) maxi-
mum for a single copper conductor regardless of
whether it is solid or stranded and is or is not
metal-coated. 18.0 [28.6]
DC Resistance Unbalance (percent) maximum 5
Mutual Capacitance of a Pair (pF/foot) maxi-
mum 17
Pair-to-Ground Capacitance Unbalance (pF/
1000 feet) maximum 1000
Frequency Impedance (Ohms)
772kHz 102±15% (87-117)
1.0MHz 100±15% (85-115)
4.0MHz 100±15% (85-115)
8.0MHz 100±15% (85-115)
10.0MHz 100±15% (85-115)
16.0MHz 100±15% (85-115)
20.0MHz 100±15% (85-115)
Frequency Attenuation
772kHz 4.5 [5.7]
1.0MHz 5.5 [6.5]
4.0MHz 11.0 [13.0]
8.0MHz 15.0 [19.0]
10.0MHz 17.0 [22.0]
16.0MHz 22.0 [27.0]
20.0MHz 24.0 [31.0]