View on cable end of connector (NOT on contact end):
______________________________________ \ .................................. / \................................../ __________________________________ (arbitrary) contactnumbering: 1................................34 35................................68
The Centronics type connector has a similar shape, but is much bigger. This connector resembles the "CHAMP" connector system in the AMP catalogue. It has 50 contacts in two rows of 25. The connector on the cable is male.
View on the cable side of the connector:
_____________________________ \ ......................... / \........................./ _________________________ (arbitrary) contactnumbering: 1 25 26 50
DECstation CHAMP DECstation CHAMP
1 NC 35 NC
2 NC 36 NC
3 NC 37 37
4 NC 38 NC
5 1 39 NC
6 38 40 NC
7 26 41 NC
8 27 42 NC
9 28 43 6
10 29 44 NC
11 30 45 NC
12 31 46 NC
13 7 47 2
14 32 48 NC
15 33 49 NC
16 35 50 NC
17 42 51 NC
18 17 52 NC
19 43 53 NC
20 18 54 NC
21 44 55 4
22 19 56 NC
23 45 57 5
24 20 58 NC
25 46 59 NC
26 21 60 NC
27 47 61 3
28 22 62 NC
29 48 63 8
30 23 64 NC
31 49 65 NC
32 24 66 NC
33 50 67 10
34 25 68 NC
As a check the same cable seen from the other side:
CHAMP DECstation CHAMP DECstation
1 5 26 7
2 47 27 8
3 61 28 9
4 55 29 10
5 57 30 11
6 43 31 12
7 13 32 14
8 63 33 15
9 NC 34 NC
10 67 35 16
11 NC 36 NC
12 NC 37 37
13 NC 38 6
14 NC 39 NC
15 NC 40 NC
16 NC 41 NC
17 18 42 17
18 20 43 19
19 22 44 21
20 24 45 23
21 26 46 25
22 28 47 27
23 30 48 29
24 32 49 31
25 34 50 33
Use a cable with shielding (connected to the metal trapezoid shield
of the connectors).