3Com 3C63311 Reference Guide - Page 58
Connector Pinouts for RS-449 DCE Cable 60-pin Connector to DB-37 Female, Table 14
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46 CHAPTER 2: INSTALLATION Table 14 Connector Pinouts for RS-449 DCE Cable (60-pin Connector) to DB-37 Female Signal Name Frame GND Circuit GND RTS CTS DSR DCD DTR LL (not used) SD+ SDRD+ RDSCTE+ SCTESCR+ SCRSCT+ SCTShorting GR 1 Pin # on 60-pin Connector 46 15, 16, 30 1, 2 9, 10 7, 8 5, 6 3, 4 29 28 27 11 12 26 25 24 23 13 14 48, 49 Pin # on DB-37 Connector 1 19, 20, 37 7, 25 9, 27 11, 29 13, 31 12, 30 10 4 22 6 24 17 35 8 26 5 23 Direction (for Serial Port) In Out Out Out In In In In Out Out In In Out Out Out Out
46
C
HAPTER
2: I
NSTALLATION
Table 14
Connector Pinouts for RS-449 DCE Cable (60-pin Connector) to DB-37 Female
Signal Name
Pin # on 60-pin
Connector
Pin # on DB-37
Connector
Direction (for
Serial Port)
Frame GND
46
1
Circuit GND
15, 16, 30
19, 20, 37
RTS
1, 2
7, 25
In
CTS
9, 10
9, 27
Out
DSR
7, 8
11, 29
Out
DCD
5, 6
13, 31
Out
DTR
3, 4
12, 30
In
LL (not used)
29
10
In
SD+
28
4
In
SD-
27
22
In
RD+
11
6
Out
RD-
12
24
Out
SCTE+
26
17
In
SCTE-
25
35
In
SCR+
24
8
Out
SCR-
23
26
Out
SCT+
13
5
Out
SCT-
14
23
Out
Shorting GR 1
48, 49