EIA-232 Modem Cables RJ-45 to DB-25 Datasheet by Digi

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Modem Cables
EIA-232 Modem Cables RJ-45 10-pin to DB-25
The wiring diagram for a RJ-45 10-pin to DB-25 pin modem cable is shown in Table 1.
Table 1: EIA-232 RJ-45 10-pin to DB-25
From
RJ-45 Signal Direction Signal To DB-25
10 DCD DCD 8
6 RxD RxD 3
5 TxD TxD 2
9 DTR DTR 20
7 SG SG 7
2 DSR DSR 6
3 RTS RTS 4
8 CTS CTS 5
1 RI RI 22
Shell GND GND Shell
* Arrows indicate which direction the signal is flowing
These cables can also be purchased form Digi (See part numbers below).
2' RJ-45 10-pin to DB-25 Pin - Part #76000129
4' RJ-45 10-ping to DB-25 Pin - Part #76000195
NOTES:
Altpin should be turned off when using this cable.
This cable utilizes the CTS signal of the modem for hardware flow control (RTS/CTS).
EIA-232 cables cannot exceed 2500pF. For information about calculating capacitance of your
cable, click here.
For information regarding the EIA-232/EIA-422/EIA485 specifications, click here.
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