Connect Tech Xtreme/104 User’s Manual
Revision 0.05
21
Line Termination
Jumper blocks J5 and J6 can terminate the transmitters and receivers on the individual RS-
422/485 ports through jumper selectable 120
Ω
fixed resistors. Please refer to
for the
location of J5 and J6.
Figure 8: Example of line termination setting
Example
The following example shows the settings on J5 and
J6 where RS-422/485 ports 5, 6, 7, 8 are terminated.
Ports 1, 2, 3, 4 are RS-232 and therefore should no
be terminated with resistors
J5
RX
Tx and Rx
Terminators (120
Ω
)
J6
P4
TX
RX
TX
RX
TX
RX
TX
P3
P2
P1
TX
P5
RX
TX
RX
TX
RX
TX
RX
P6
P7
P8