Impulse 3542 User Manual
Page 10
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© Sealevel Systems, Inc.
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SIO4-104.232 User Manual
Physical Connection
The port signals for the SIO4-104.232 are physically connected via a 40-pin box header.
The following table shows connector P4’s pin-out.
P4 Signal
Name
1 DCD4
2 DSR4
3 RD4
4 RTS4
5 TD4
6 CTS4
7 DTR4
8 RI4
Port4
9 GND4
10 GND3
11 RI3
12 DTR3
13 CTS3
14 TD3
15 RTS3
16 RD3
17 DSR3
Port3
18 DCD3
19 DCD2
20 DSR2
21 RD2
22 RTS2
23 TD2
24 CTS2
25 DTR2
26 RI2
Port2
27 GND2
28 GND1
29 RI1
30 DTR1
31 CTS1
32 TD1
33 RTS1
34 RD1
35 DSR1
Port1
36 DCD1
Pins 37, 38, 39, and 40 are no connects.
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