Trane TR200, BACnet Option Module instruction manual Resistance 110 Ohm/km Capacitance 30 pF/m

How to Install

The length statements in the tables above are valid for bus cable with the following properties:

-Impedance: 135 to 165 Ohm at a measuring frequency from 3 to 20 MHz

-Resistance: <110 Ohm/km

-Capacitance: <30 pF/m

-Damping: max. 9 dB over the whole wire length

-Cross section: max. 0.00053 in2 [0.34 mm2], corresponding to AWG 22

-Cable type: twisted in pairs, 1 x 2, or 2 x 2, or 1 x 4 wires

-Shielding: Copper-braided shield or braided shield and foil shield

Use of the same cable type throughout the entire segment is recommended to avoid impedance mismatch.

TR200 BACnet 3-3