Quatech QSC-100 Manuel d'utilisateur Page 28

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6.7 Termination Resistors
No termination resistors are provided on the ports. Both output and input signals are connected
only to the external connector. Any termination which is required must be added externally.
+
-
RS-422/485 Receiver
Rt
RXD+
RXD-
+
-
RS-422/485 Receiver
Rt
AUXIN+
AUXIN-
RS-422
100 ohm 1/2W resistor
RS-485
60 ohms total resistance
(120 ohms at each end)
Recommended Termination Resistor Values
Figure 6. RS-422/485 Termination
12
Quatech QSC(LP)-200/300 User's Manual 26
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