Teltonika RUT9 Series User Manual

8.5.2.2 Cable type
Recomended cable parameters:
Parameter
Value
Cable Type
22-24 AWG, 2 – pair (used for full-duplex networks ) or 1-pair (used for half
duplex networks). One addtitional wire for ground connection is needed.
Characteristic cable Impedance
120 Ω @ 1MHz
Capacitance (conductor to conductor)
36 pF/m
Propagation Velocity
78% (1.3 ns/ft)
8.5.2.3 RS485 connector pin-out
Name
Description
Type
D_P
Driver positive signal
Differential Output
D_N
Driver negative signal
Differential Output
R_P
Receiver positive signal
Differential input
R_N
Receiver negative signal
Differential input
Ground
Device ground
Differential Output
8.5.2.4 2-Wire and 4-Wire Networks
Below is an example of 4- wire network electrical connection. There are 3 devices shown in the example. One of
the devices is master and other two- slaves. Termination resistors are placed at each cable end. Four-wire networks
consists of one „master“ with its transmitter connected to each of the “slave” receivers on one twisted pair. The“slave”
transmitters are all connected to the “master” receiver on a second twisted pair.
D_P
R_P
N/C
D_N
R_N
Ground
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Teltonika RUT9 Series Specifications

General

Brand	Teltonika
Model	RUT9 Series
Category	Network Router
Language	English