PCI Photon 8 Port RS232 Index
Chapter 4 Page 46
The Lynx Card Octopus Cable Pinouts
The Lynx card octopus cable connects a 78 pin Male D
connector to 8 nine way Male D connectors. Each of the cables has
9 cores plus a sheath. The sheath each of the 25 way D connectors
is connected to the sheath of the 78 way D connector. Each of the
9 pin D connectors has 9 connections in the standard PC serial port
configuration, see figure 7-8, below. Each cable is approximately
1 metre long and is clearly marked as P1 for Port 1, P2 for Port 2
etc.
78 way D connector Pinouts
Port
#1
Port
#2
Port
#3
Port
#4
Pin Function
9
Pin
25
Pin
30
50
11
10
Transmitted Data (TXD)
3
2
55
17
37
56
Received Data (RXD)
2
3
51
31
12
14
Request To Send (RTS)
7
4
16
53
59
57
Clear To Send (CTS)
8
5
54
34
58
38
Data Set Ready (DSR)
6
6
68
69
70
71
Ground (GND)
5
7
35
33
39
18
Data Carrier Detect (DCD)
1
8
49
32
13
52
Data terminal Ready(DTR)
4
20
36
15
20
19
Ring Indicator (RI)
9
22
78 way D connector Pinouts
Port
#5
Port
#6
Port
#7
Port
#8
Pin Function
9
Pin
25
Pin
40
2
63
64
Transmitted Data (TXD)
3
2
28
8
46
27
Received Data (RXD)
2
3
21
41
62
60
Request To Send (RTS)
7
4
25
4
9
45
Clear To Send (CTS)
8
5
5
42
29
26
Data Set Ready (DSR)
6
6
72
73
74
75
Ground (GND)
5
7
43
23
48
6
Data Carrier Detect (DCD)
1
8
22
3
61
1
Data terminal Ready(DTR)
4
20
44
24
47
7
Ring Indicator (RI)
9
22
NOTE: Pins 65,66,75 - 78 on the above connector are not used
