Teltonika RUT955 User Manual page 127

RUT955 User's Manual
9.6.2.2 Cable type
Recomended cable parameters:
Parameter
Cable Type
Characteristic cable Impedance
Capacitance (conductor to conductor)
Propagation Velocity
9.6.2.3 RS485 connector pin-out
Teltonika Solutions
Value
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
120 Ω @ 1MHz
36 pF/m
78% (1.3 ns/ft)
Name Description
D_P Driver positive signal
D_N Driver negative signal
R_P Receiver positive signal
R_N Receiver negative signal
Ground Device ground
D_N
D_P
Type
Differential Output
Differential Output
Differential Input
Differential Input
Differential Output
Ground
R_N
R_P N/C
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