General DataComm SpectraComm SDT, Installation And Operation Manual

Page: 29 / 74

Installation & Connections Overview
076R174-000 SpectraComm SDT 2-11
Issue 4 Installation and Operation Manual
Note
The 26-pin connector pins 22, 24 and 26 are connected together.
Table 2-7 RS-449 DTE Serial Cable Pinouts
26-pin Signal Name Note Direction DB37-pin Signal Name
22
24 MODE_1
MODE_DCE
Twisted
Pair
---
--- 19
20 SG
RC
1
14
TXD/RXD+
TXD/RXD-
Twisted
Pair
-->
-->
4
22
SD+
SD-
2
15
TXCE/RXC+
TXCE/RXC-
Twisted
Pair
-->
-->
17
35 TT+
TT-
3
16
TXC/TXC+
TXC/TXC-
Twisted
Pair
<--
<--
5
23
ST+
ST-
4
17
RXC/TXCE+
RXC/TXCE-
Twisted
Pair
<--
<--
8
26
RT+
RT-
5
18
RXD/TXD+
RXD/TXD-
Twisted
Pair
<--
<--
6
24
RD+
RD-
6
19
DCD/DCD+
DCD/DCD-
Twisted
Pair
<--
<--
13
31 RR+
RR-
7
20
DTR/DSR+
DTR/DSR-
Twisted
Pair
-->
-->
12
30 TR+
TR-
8
9 RTS/CTS+
RTS/CTS-
Twisted
Pair
-->
-->
7
25
RS+
RS-
10
11 CTS/RTS-
CTS/RTS+
Twisted
Pair
<--
<--
27
9
CS-
CS+
12
25 DTR/DSR+
DTR/DSR-
Twisted
Pair
<--
<--
11
29 DM+
DM-
13
26 LL/LL+
GND+
Twisted
Pair
-->
---
10
37 LL
SC
Shell Drain Wire Shield Pin 1 to Shell Shield_GND