Matrix Switch Modules 5
34980A User’s Guide 173
34932A Dual 4x16 Armature Matrix
The 34932A dual 4x16 armature matrix contains two matrices, each with
64 2- wire crosspoint latching armature relays organized in a 4- row by
16- column configuration. Every row and column are made up of two
wires each, a high (H) and a low (L). Each crosspoint relay has a unique
channel number representing the row and column that intersect to create
the crosspoint. For example, channel 315 represents the crosspoint
connection between row 3 and column 15 (all columns consisting of two
digits; in this case the digits are 15). See the simplified schematic on
page 174.
You can connect any combination of inputs and outputs at the same
time. However, only Matrix 2 in this module connects to the Analog
Buses. By closing channels 921 and 922 you can connect rows 5 and 6
respectively to the internal DMM of the 34980A mainframe for voltage
and resistance measurements. You can connect multiple matrix modules
externally and/or through the Analog Buses for applications that require
large matrices. For information on linking multiple matrix modules, refer
to page 166 of this chapter.
When the power is off, matrix relays maintain state, and Analog Bus
relays open.
NOTE
When the DMM is scanning, it controls ABus1 and ABus2 relays,
which are on Matrix 2. Therefore, consider this behavior when you
are connecting matrices.
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