NI PXI-2501/2503

The NI PXI-2501/2503 are multiplexer/matrix switch modules for the PXI platform. The NI PXI-2501 is composed of solid-state relays, and the NI PXI-2503 uses armature relays.

Note  For EMC compliance, operate this device with shielded cables.

NI PXI-2501 Operation Modes

The following table lists the supported topology of the NI PXI-2501 and possible operation modes.

Topology	Software Name	Immediate	Scanning
1-Wire 48×1 Multiplexer	2501/1-Wire 48x1 Mux (NISWITCH_TOPOLOGY_2501_1_WIRE_48X1_MUX)
1-Wire 48×1 Amplified Multiplexer	2501/1-Wire 48x1 Amplified Mux (NISWITCH_TOPOLOGY_2501_1_WIRE_48X1_AMPLIFIED_MUX)
2-Wire 24×1 Multiplexer	2501/2-Wire 24x1 Mux (NISWITCH_TOPOLOGY_2501_2_WIRE_24X1_MUX)
2-Wire 24×1 Amplified Multiplexer	2501/2-Wire 24x1 Amplified Mux (NISWITCH_TOPOLOGY_2501_2_WIRE_24X1_AMPLIFIED_MUX)
2-Wire Dual 12×1 Multiplexer	2501/2-Wire Dual 12x1 Mux (NISWITCH_TOPOLOGY_2501_2_WIRE_DUAL_12X1_MUX)
2-Wire Quad 6×1 Multiplexer	2501/2-Wire Quad 6x1 Mux (NISWITCH_TOPOLOGY_2501_2_WIRE_QUAD_6X1_MUX)
2-Wire 4×6 Matrix	2501/2-Wire 4x6 Matrix (NISWITCH_TOPOLOGY_2501_2_WIRE_4X6_MATRIX)
4-Wire 12×1 Multiplexer	2501/4-Wire 12x1 Mux (NISWITCH_TOPOLOGY_2501_4_WIRE_12X1_MUX)

NI PXI-2503 Operation Modes

The following table lists the supported topologies of the NI PXI-2503 and possible operation modes.

Topology	Software Name	Immediate	Scanning
1-Wire 48×1 Multiplexer	2503/1-Wire 48x1 Mux (NISWITCH_TOPOLOGY_2503_1_WIRE_48X1_MUX)
2-Wire 24×1 Multiplexer	2503/2-Wire 24x1 Mux (NISWITCH_TOPOLOGY_2503_2_WIRE_24X1_MUX)
2-Wire Dual 12×1 Multiplexer	2503/2-Wire Dual 12x1 Mux (NISWITCH_TOPOLOGY_2503_2_WIRE_DUAL_12X1_MUX)
2-Wire Quad 6×1 Multiplexer	2503/2-Wire Quad 6x1 Mux (NISWITCH_TOPOLOGY_2503_2_WIRE_QUAD_6X1_MUX)
2-Wire 4×6 Matrix	2503/2-Wire 4x6 Matrix (NISWITCH_TOPOLOGY_2503_2_WIRE_4X6_MATRIX)
4-Wire 12×1 Multiplexer	2503/4-Wire 12x1 Mux (NISWITCH_TOPOLOGY_2503_4_WIRE_12X1_MUX)