NI SCXI-1130 4-Wire 64×1 Multiplexer Topology

Use the NI SCXI-1377 terminal block with the NI SCXI-1130 as a 4-wire 64×1 multiplexer. The following figure represents the NI SCXI-1130 in the 4-wire 64×1 multiplexer topology.

Making a Connection

In 4-wire mode, channel terminals CH 00 through CH 63 each have four leads that route in parallel to the OUT0, OUT1, OUT4, and OUT5 screw terminals on the NI SCXI-1377. OUT0, OUT1, OUT4, and OUT5 are addressed collectively as com0 in software.

Both the scanning command, ch2->com0;, and the immediate operation niSwitch Connect Channels VI or the niSwitch_Connect function with parameters ch2 and com0, result in the following connections:

signal connected to CH 02 is routed to OUT0

signal connected to CH 18 is routed to OUT1

signal connected to CH 66 is routed to OUT4

signal connected to CH 82 is routed to OUT5

Signal Connections

Refer to the Signal Connections section for the NI SCXI-1130 front connector pinout and NI SCXI-1377 terminal mapping.