©Sealevel Systems, Inc.
SL9249 – 12/2013
7802e Manual
16
Port #
1
2
3
4
5
6
7
8
TX-
1
9
19 27
35
43
53
61
RX-
7
15
25 33
41
49
59
67
RTS-
5
13
23 31
39
47
57
65
CTS-
8
16
26 34
42
50
60
68
TX+
4
12
22 30
38
46
56
64
RTS+
6
14
24 32
40
48
58
66
RX+
3
11
21 29
37
45
55
63
CTS+
2
10
20 28
36
44
54
62
GND
17
17
18 18
51
51
52
52
Please terminate any control signals that are not going to be used. The most common
way to do this is connect RTS to CTS and RI. Also, connect DCD to DTR and DSR.
Terminating these pins, if not used, will help ensure you get the best performance from
your adapter.
The RTS output is only available in RS-422 mode. The RTS output is tri-stated in RS-485
mode and therefore unusable. The CTS input is available in all modes.
