Keithley 7701 User Manual page 10

Table 1
D-shell pin identification
7701
Pin Terminal
1 Ch 1 Hi 11
2 Ch 2 Lo 12
3 Ch 4 Hi 13
4 Ch 5 Lo 14
5 Ch 7 Hi 15
6 Ch 8 Lo 16
7 Ch 10 Hi 17
8 Ch 11 Lo 18
9 Ch 13 Hi 19
10 Ch 14 Lo 20
7701
Pin Terminal
1 Ch 25 Hi 7
2 Ch 26 Hi 8
3 Ch 27 Hi 9
4 Ch 28 Hi 10, 11
5 Ch 29 Hi 12
6 Ch 30 Hi 13
Wiring
NOTE The Model 7701 is shipped with plastic connector covers installed on the D-shell connectors. Each
cover is secured to the connector by two screws. After removing a connector cover, retain it and
the screws for future use. Any unused D-shell connector must have the connector cover installed.
The Model 7701 is supplied with one 50-pin male IDC ribbon cable connector, and one 25-pin male IDC ribbon cable connec-
tor. These ribbon cable connectors mate to the D-shell connectors of the switching module.
WARNING When using IDC ribbon cable connections, DO NOT exceed 42V anywhere in the test
system or at the front panel inputs of the Model 27xx. For higher voltage applications,
use larger wire (up to #20 AWG) and solder cup D-shell connectors.
There are two connector kits that have connectors that can be used with the Model 7701:
• Model 7790 ribbon cable adapter kit — Contains one female DB-50, one male DB-50 and one male DB-25 IDC
ribbon cable connectors. The two male IDC connectors mate to the D-shell connectors on the Model 7701.
• Model 7789 50/25-pin solder cup connector kit — Contains one male DB-50 and one male DB-25 solder cup con-
nectors. These connectors mate to the D-shell connectors on the Model 7701.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com
50-pin D-shell (DB-50)
7701
Pin Terminal Pin
Ch 16 Hi 21 Ch 6 Lo
Ch 17 Lo 22 Ch 8 Hi
Ch 19 Hi 23 Ch 9 Lo
Ch 20 Lo 24 Ch 11 Hi
Ch 22 Hi 25 Ch 12 Lo
Ch 23 Lo 26 Ch 14 Hi
Mux 1 Hi 27 Ch 15 Lo
Ch 2 Hi 28 Ch 17 Hi
Ch 3 Lo 29 Ch 18 Lo
Ch 5 Hi 30 Ch 20 Hi
25-pin D-shell (DB-25)
7701
Pin Terminal Pin
Ch 31 Hi 14 Ch 25 Lo
Ch 32 Hi 15 Ch 26 Lo
Mux 2 Hi 16 Ch 27 Lo
— 17 Ch 28 Lo
P12 18 Ch 29 Lo
P13 19 Ch 30 Lo
7701 7701
Terminal Pin Terminal
31 Ch 21 Lo
32 Ch 23 Hi
33 Ch 24 Lo
34 Ch 1 Lo
35 Ch 3 Hi
36 Ch 4 Lo
37 Ch 6 Hi
38 Ch 7 Lo
39 Ch 9 Hi
40 Ch 10 Lo
7701 7701
Terminal Pin Terminal
20 Ch 31 Lo
21 Ch 32 Lo
22 Mux 2 Lo
23 —
24 P24
25 P25
7701
Pin Terminal
41 Ch 12 Hi
42 Ch 13 Lo
43 Ch 15 Hi
44 Ch 16 Lo
45 Ch 18 Hi
46 Ch 19 Lo
47 Ch 21 Hi
48 Ch 22 Lo
49 Ch 24 Hi
50 Mux 1 Lo
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