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32 Chapter 6 EIA-422 asynchronous interface
EIA-422 DTE to DCE (modem) cable
Use the following table as a guide for EIA-422 modem wiring. Pin numbers
have been omitted because they vary from product to product. For Digi pin
numbers, see the section titled "Digi EIA-422 connector wiring" on page 30.
For modem pin numbers, see your modem's documentation.
DTE (Digi end) DCE (modem)
Signal Lead Lead Signal
TxD
+
Connected to
+
TxD
-
Connected to
-
RxD
+
Connected to
+
RxD
-
Connected to
-
RTS
+
Connected to
+
RTS
-
Connected to
-
CTS
+
Connected to
+
CTS
-
Connected to
-
GND Connected to GND
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