3com 3018 (3C13618) User Manual
62
C
HAPTER
A: O
PTIONAL
C
ABLE
S
PECIFICATIONS
EIA-530 DTE Cable
Pinouts
Figure 38 illustrates the EIA-530 DTE cable.
Figure 38 EIA-530 DTE Cable Assembly
Table 39 describes EIA-530 DTE cable pinouts.
41
NIL/TXC-
<-
ST-
23
-
Shielding sheath
<-->
Shielding sheath
-
Table 38
EIA/TIA-449 DCE Cable Pinouts (continued)
DB50
Signal
Signal Direction Signal
DB37
Table 39 EIA-530 DTE Cable Pinouts
DB50
Signal
Signal Direction Signal
DB25
7
GND
<-->
Circuit GND
7
23
DCE/DTE
-
Circuit GND
7
50
GND
<-->
Shield GND
1
8
DTR/DSR+
->
DTR+
20
32
DTR/DSR-
->
DTR-
23
13
DSR/DTR+
<-
DSR+
6
37
DSR/DTR-
<-
DSR-
22
10
RTS/CTS+
->
RTS+
4
34
RTS/CTS-
->
RTS-
19
38
CTS/RTS+
<-
CTS+
5
14
CTS/RTS-
<-
CTS-
13
36
DCD/DCD+
<-
DCD+
8
12
DCD/DCD-
<-
DCD-
10
1
LL/LL
->
LL
18
20
RXD/TXD+
<-
RXD+
3
44
RXD/TXD-
<-
RXD-
16
15
TXD/RXD+
->
TXD+
2
39
TXD/RXD-
->
TXD-
14
16
TXCE/RXC+
->
TXCE+
24
40
TXCE/RXC-
->
TXCE-
11
19
RXC/TXCE+
<-
RXC+
17
43
RXC/TXCE-
<-
RXC-
9
18
TXC/NIL+
<-
ST+
15
42
TXC/NIL-
<-
ST-
12
-
Shielding sheath
<-->
Shielding sheath
-