Table Of Contents

PXI-2503 Topology

    Last Modified: February 23, 2017

    1-Wire 48x1 Amplified Multiplexer Topology

    1-Wire 48x1 Multiplexer Topology

    2-Wire 24x1 Amplified Multiplexer Topology

    2-Wire 24×1 Multiplexer Topology

    2-Wire Dual 12×1 Multiplexer Topology

    2-Wire Quad 6×1 Multiplexer Topology

    4-Wire 12×1 Multiplexer Topology

    4-wire mode is usually used in 4-wire resistance measurements. One pair of wires supplies the excitation while the other pair makes the voltage measurement. In 4-wire mode, connect your excitation or source leads to CHxA+ and CHxA-, and connect your measurement or sensing leads to CHxB+ and CHxB-, as shown in the following figure.


    The previous figure shows the DMM connected to the analog bus (AB) of the switch module. Instead of routing signals to the AB, you can connect COM0A+ and COM0A- to the excitation terminals and COM0B+ and COM0B- to the sense terminals of the DMM.

    2-Wire 4×6 Matrix Topology

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