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9480, 4180, 4280, 4284 4000XA User Manual
13.17 The DB9 Console Adapter
Some Personal Computers use a 9 pin DB9 interface for serial communications. The
terminal emulation programs may require certain lead status. Since console connections
are generally implemented as three wire interfaces (i.e. RxD, TxD, and SG); this may
pose a problem for the terminal emulation programs.
Below is depicted the wiring of a DB9 adapter which eliminates the problems associated
with these terminal emulation programs. It is used with a standard straight category 5
RJ45 cable.
DB9 DCE Console Adapter
1 2 3 4 5 6 7 8
RJ45 Female Pin Numbering
RJ45 Female
DB9 Female
1
1
2
3
2
3
DCD
RxD
TxD
4
4
DTR
5
5
SG
6
7
8
6
7
8
DSR
CTS
9
RI
RTS
Note: This cable for use on console ports only.
Use with a straight CAT-5 RJ45 cable.
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