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Appendices
B.3. Connecting DB-25F DTE Devices
The DX25M-DTE-RJ Snap Adapter can be used with a Straight RJ-45 cable to attach the
most DB-25F DTE devices to RJ-45 Serial Ports on RSM-8R units.
When connecting a DB-25F DTE device to an RJ-45 Serial Port on the RSM-8R, please
refer to Figure B.5 and Figure B.6 below:
RJ-45
DB-25M
Pin No.
Pin No. Signal
1
2
3
4
5
X
6
7
8
5
8
3
7
2
20
4
CTS
DCD
TXD
RXD
GND
DTR
RTS
Pin 8
Pin 1
Pin 1
Male
Figure B.5: DX25M-DTE-RJ Snap Adapter Interface
RSM-8R
RJ-45 DCE
Serial Port
Straight
RJ-45 Cable
DB-25F DTE
Serial Port
DX25M-DTE-RJ
Snap Adapter
Devices
with DB-25F
DTE Interface
Figure B.6: Connecting DB-25F DTE Devices to an RJ-45 Serial Port on an RSM-8R