Narrow Matrix Expansion - Keithley 7071 Instruction Manual

OPERATION
2.6 MATRIX EXPANSION
With the use of additional Model 7071 matrix cards, larger
matricies can be configured and are described in the
following paragraphs.
NOTE
Some configurations require that the backplane
row iumpers of the Model 707 be removed. The
pro&d& to remove these jumpers can be found
in the Model 707 Instruction Manual.
2.6.1 Narrow Matrix Expansion
As shipped from the factory, the rows of all six slots of the
Model 707 are internally connected together. Thus, each
card installed in the mainframe extends the matrix by 12
columns. For example, three cards installed in the Model
7U7 will result in an 8 x 36 matrix. Figure 2-16 shows three
matrix cards installed in slots 1, 2 and 6.
Model 7071 matrix cards installed in slots 1, 2 and 3 of the
Model 7CV can be electricaIly isolated from slots 4, 5 and
6 by removing the backplane row jumpers. With the
jumpers removed, the Model 7U7 can accomodate two com-
plete, separate matrices using Model 7071 matrix cards (see
Figure 2-V).
Table 2-4. Narrow Matrix Expansion'
Installed
Matrix Cards
1 Card
2
Cards
3 Cards
4
Cards
5
Cards
6
Cards
Resulting Matrix
8xl2
8 x 24
8 x 36
8x48
8 x 60
8 x 72
'Backplane row jumpers between slots 3 and 4 of main-
frame must be installed for a matrix larger than 36
columns.
ROWS
----I
7071
7071
7071
(Slot 1)
(Slot 2) (slot 6)
H-
Figure 2-16. Narmw Matrix Example (6 x 36) (Backplane Jumpers Not Removed)
2-18