National Instruments 1128 用户手册

Figure 2-21.  SCXI-1332 Connected to an SCXI-1127/1128 Schematic

You can build matrices larger than 4 

× 8 by using multiple 

SCXI-1127/1128 modules. You can build these larger matrices using row 
and column expansion of the 4 

× 8 matrix. An example of row expansion 

is an 8 

× 8 matrix. A 4 × 16 matrix is an example of a column expansion. 

A 8 

× 16 matrix is an example of both a row and column expansion.

Figure 2-22 shows an example of two SCXI-1332 terminal blocks 
connected to form an 8 

× 8 matrix. You can connect the terminal blocks 

using matrix expansion cables that are available from National Instruments. 
The columns of one module are connected to the other module, doubling 
the number of rows from four to eight. Figure 2-23 shows the schematic 
of an 8 

× 8 matrix made this way. The rows in module 2 are now rows 

R4 through R7 due to the matrix expansion. Similarly, you can make a 
4

× 16 matrix by connecting the rows of two SCXI-1332s.

Power

Supply

DMM

Load Resistors

c0

c1

c2

c3

c4

c5

c6

c7

r 0

r 1

r 2

r 3

+

–

+

–