3com 3018 (3C13618) Manuel D’Utilisation
Serial Port Cable
61
EIA/TIA-449 DCE Cable
Pinouts
Figure 37 illustrates the EIA/TIA-449 DCE cable.
Figure 37 EIA/TIA-449 DCE Cable Assembly
Table 38 describes EIA/TIA-449 DCE cable pinouts.
40
TXCE/RXC-
->
TT-
35
19
RXC/TXCE+
<-
RT+
8
43
RXC/TXCE-
<-
RT-
26
18
TXC/NIL+
<-
ST+
5
42
TXC/NIL-
<-
ST-
23
-
Shielding sheath
<-->
Shielding sheath
-
Table 37 EIA/TIA-449 DTE Cable Pinouts (continued)
DB50
Signal
Signal Direction Signal
DB37
Table 38
EIA/TIA-449 DCE Cable Pinouts
DB50
Signal
Signal Direction Signal
DB37
7
GND
<-->
Circuit GND
19
50
GND
<-->
Shield GND
1
8
DTR/DSR+
->
DM+
11
32
DTR/DSR-
->
DM-
29
13
DSR/DTR+
<-
TR+
12
37
DSR/DTR-
<-
TR-
30
10
RTS/CTS+
->
CS+
9
34
RTS/CTS-
->
CS-
27
38
CTS/RTS+
<-
RS+
7
14
CTS/RTS-
<-
RS-
25
36
DCD/DCD+
<-
RR+
13
12
DCD/DCD-
<-
RR-
31
20
RXD/TXD+
<-
SD+
4
44
RXD/TXD-
<-
SD-
22
15
TXD/RXD+
->
RD+
6
39
TXD/RXD-
->
RD-
24
16
TXCE/RXC+
<-
RT+
8
40
TXCE/RXC-
<-
RT-
26
19
RXC/TXCE+
<-
TT+
17
43
RXC/TXCE-
<-
TT-
35
17
NIL/TXC+
<-
ST+
5