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Appendices
C.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 standard TSM Series units or
RSM-8R8 Series units.
When connecting a DB-25F DTE device to an RJ-45 Serial Port on a standard TSM
Series unit or RSM-8R8 Series unit, please refer to Figure C.5 and Figure C.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 C.5: DX25M-DTE-RJ Snap Adapter Interface
TSM Series
Unit or
RSM-8R
Series Unit
RJ-45 DCE
Serial Port
Straight
RJ-45 Cable
DB-25F DCE
Serial Port
DX25M-DCE-RJ
Snap Adapter
External
Modem or
Other Device
with DB-25F
DCE Interface
Figure C.6: Connecting DB-25F DTE Devices to an RJ-45 Serial Port on an RSM-8R8