166 34980A User’s Guide
5 Matrix Switch Modules
Linking Multiple Matrix Modules
You can link multiple matrix modules to form a larger matrix. The
following two drawings show two- module connections through rows and
columns.
Wiring Multiple 34931A or 34932A Modules
With a 34931A you can combine two matrices to form 8x8 (connecting
columns) or 4x16 (connecting rows) configurations. Using two 34932A
matrices on a 34932A module, you can create 16x8 (connecting columns)
or 4x32 (connecting rows) configurations.
You can connect rows in separate modules using external wiring. Or,
using Bank 2 matrices, you can connect through the mainframe Analog
Buses. For a clear idea of how matrices are arranged and their
connections to the Analog Buses, see the simplified schematics on
page 169 (34931A) and page 174 (34932A).
You must use external wiring whenever you connect:
• Rows in Matrix 1 of separate modules
• Rows in Matrix 1 to rows in Matrix 2 on the same or separate
modules
• Columns of two matrices on the same or separate modules
You can expand upon these two- module configurations and add up to
eight modules to design your own large matrices. From a programming
standpoint, each matrix module operates as an independent module
regardless of the external connections. When linking modules, the
channel numbering scheme remains the same as for single modules.
Wiring Multiple 34933A Modules
You can connect matrices on the 34933A module in a similar fashion to
the 34931A. However, the presence of in- rush resistors on the Analog
Buses and columns require additional consideration, and you must take
care when linking multiple 34933A matrix modules. See the simplified
schematics on page 179 and page 183.
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