Overview of the 34934A 1
Keysight 34934A User’s Guide 21
Configuration blocks can be used with a single 34934A. They can also be used in
extended-row matrix configurations employing multiple 34934A modules;
daisy-chain connections between the modules are made using the extension
headers.
Direct Wiring
The 34934A has two 78-pin male high-density D-Sub connectors. You can
connect your field wiring directly to these connectors using custom D-Sub cables.
All matrix configuration must be accomplished by user-supplied wiring between
these two cables.
Both the 34934A module and 34934C (Options 001 and 002) configuration blocks
have 78-pin male D-Sub connectors. Wiring to these is covered in separate
sections, and requires different wiring (34934A vs. 34934C) for each base
configuration.
Use of the 34980A Web Browser Interface with the 34934A
The 34980A Web Browser interface, accessible by PC via a LAN connection, is
highly useful for helping you visualize the 34934A matrix topologies,
nomenclature, and channel numbering.
Using the Web Browser, you can observe and fully control the 34934A module.
The Web Browser displays the matrix in use, with rows, columns and channel
numbers for each matrix crosspoint. An example is shown below, illustrating the
4x128 matrix.
For the 34934C-001, the D-Sub connector pin assignments are identical to the
D-Sub connectors on the 34934A module. For the 34934C-002, the D-Sub
connector pin assignments are not identical to the D-Sub connectors on the
34934A module. Pay careful attention to the wiring requirements found in the
instructions when making D-Sub connections!
For some modes (8x32, 8x64 and 16x32), direct wiring is extensive. You may
want to consider using the 34934C-002 configuration block in these instances to
significantly reduce the additional wiring required.
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