Card Connections; Overview-Matrix Design Considerations - Keithley 708 Instruction Manual

Getting Started
3.4 Card connections
3.4.1 Overview-matrix design considerations
Card connections provide connection terminals between the
instruments and the DUTs. For each matrix card designed for
the Model 70% the rows can bc lengthened by adding col-
umns from other cards of the same model number through
the analog backplane busts or with user-installed jumpers,
depending on the card model. To manufacture a cable for an-
alog backplane bus expansion, refer to paragraph 3.5.7.
Rows arc expanded across mainframe boundaries, either in a
master/slave or stand-alone/stand-alone configuration. In a
mastcr/slavc configuration ol' up to five switching systems,
the rows arc extended to 60 columns maximum. Paragraph
3.5 describes master/slave expansion.
Table 3-4
Matrix and multiplexer cards
k-en Collector Drive;
The Model 708 Switching System is designed to be used
with the cards listed in Table 3-4.
3.42 Connections - instruments to rows
If your application requires few instruments and many
DUTs, connect the inslruments to rows (up to eight) and the
DUTs to columns (I2 columns per matrix card/switching
matrix, up to 60 columns wilh live matrix cards/switching
matrices as stand-alone units or in a master/slave configura-
lion). This connection scheme is optimum because the row-
column path has only one crosspoint as shown in Figure 3-6.
Expansion of rows leads to a long, narrow matrix containing
one crosspoint as shown in Figure 3.7.
707 I-4
7074-D
7074-M
7075
7076
Dual 4 x 12 Matrix Card
Eight 1 x 12 Multiplexer Card
Eight I x 12 Multiplexer Card
Eight I x I2 Mulliplexer Card
Dual 4 x 12 Matrix Card
/
Semiconductor / 7072
I
/Xxl2MatrixCard
8 x 12 Matrix Card
8 x 12 Matrix Card
8 x 12 Matrix Card
8 x 12 Matrix Card
8 x 12 Matrix Card
4 x 12 Matrix Card
3-6