Keithley 7709, User Manual

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12
DUT and external source connections
DUT and external sources are to be wired to a 50-pin male D-shell connector. An IDC D-shell ribbon cable connector or a D-
shell solder cup connector can be used.
IDC ribbon cable connections
WARNING When using IDC ribbon cable connections, DO NOT exceed 42V anywhere in the test
system or to the front panel inputs of the Model 27xx.
Connect an appropriate length of 50-conductor IDC ribbon cable to a 50-pin male D-shell IDC connector. Table 2 and Figure 9
provide terminal identification for the 50-pin ribbon cable connections.
The connector of the prepared ribbon cable assembly mates to the 50-pin D-shell connector of the Model 7790 as shown in
Figure 10 . Make sure the connector cover for the 25-pin D-shell connector is installed if it is not going to be used.
Table 2
Terminal identification for 50-conductor IDC ribbon cable and 7709 DB-50 connector
Ribbon Cable*: Matrix DB-50 Ribbon Cable*: Matrix DB-50
Conductor Color Terminal Pin # Conductor Color Terminal Pin #
1 Brown Row 1 Hi 1 26 Blue — —
2 Red Row 1 Lo 34 27 Violet Col 3 Hi 26
3 Orange Row 2 Hi 18 28 Grey Col 3 Lo 10
4 Yellow Row 2 Lo 2 29 White Col 4 Hi 43
5 Green Row 3 Hi 35 30 Black Col 4 Lo 27
6 Blue Row 3 Lo 19 31 Brown — —
7 Violet — — 32 Red — —
8 Grey — — 33 Orange Col 5 Hi 28
9 White Row 4 Hi 20 34 Yellow Col 5 Lo 12
10 Black Row 4 Lo 4 35 Green Col 6 Hi 45
11 Brown Row 5 Hi 37 36 Blue Col 6 Lo 29
12 Red Row 5 Lo 21 37 Violet — —
13 Orange — — 38 Grey — —
14 Yellow — — 39 White Col 7 Hi 30
15 Green Row 6 Hi 22 40 Black Col 7 Lo 14
16 Blue Row 6 Lo 6 41 Brown Col 8 Hi 47
17 Violet — — 42 Red Col 8 Lo 31
18 Grey — — 43 Orange — —
19 White — — 44 Yellow — —
20 Black — — 45 Green — —
21 Brown Col 1 Hi 24 46 Blue — —
22 Red Col 1 Lo 8 47 Violet — —
23 Orange Col 2 Hi 41 48 Grey — —
24 Yellow Col 2 Lo 25 49 White — —
25 Green — — 50 Black — —
* 50-conductor IDC ribbon cable is available from Keithley.