Overview of the 34934A 1
Keysight 34934A User’s Guide 37
8x64 Matrices
8x64 Topology
You can select the 8x64 matrix configuration by setting jumpers on the
appropriate terminal block or configuration block, or by D-Sub wiring.
Once configured for 8x64, the 34934A creates a single matrix, with 512 crosspoint
non-latching reed relays organized in a 8-row by 64-column configuration. On the
34934T-002 terminal block, the columns are numbered 1-64; the rows R1-R8. In
the pin assignment diagrams and tables, the numbering is C1-C64 and R1-R8.
The matrix is created by jumpering the rows
between pairs of the 4x32 relay banks
together, then jumpering the columns
. This is done automatically through the
“CONFIG” jumpers on the terminal and configuration blocks, or by shorting pins
between your D-Sub cables. The row jumpers are shown on the example; the
column jumpers are not.
The row jumpers connect a bank to paired bank through one 100Ω Row Protection
Resistor (with Bypass Relay) per row. The example which follows show two ways
to connect your DUT and test instrument; each circuit path may include series
resistance, depending on the connection and programmed mode for row
protection (see “Row Protection” on page 15).
On the 34934T-002 terminal block, there are redundant sets of terminals provided
for columns 1-64, one set on each side of the block. The column terminals on
each side of the block are shorted (by traces within the block) to their like-labeled
counterparts on the other; you may make any column connection to the
appropriate terminal on either side.
8x64 Test Circuit Example
The example below shows two circuit paths through the matrix.
The upper example path connects a DUT on column C31 to an instrument on row
R8, through one 100Ω series row-protection resistor. The lower path shows both
DUT and instrument connected to columns using row R1, but through two
resistors, as the two devices are on separate 32-column banks.
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