NI PXI-2527 4-Wire 16×1 Multiplexer Topology

Connect to the pins of the NI TB-2627 terminal block to use the NI PXI-2527 as a 4-wire 16×1 multiplexer. In this topology, all positive "A" leads (CH0A+ through CH15A+) route to COM0+. All negative "A" leads (CH0A– through CH15A–) route to COM0–. All positive "B" leads (CH0B+ through CH15B+) route to COM1+. All negative "B" leads (CH0B– through CH15B–) route to COM1–. COM0+, COM0–, COM1+, and COM1– are addressed as com0 in software.

The following figure represents the NI PXI-2527 in the 4-wire 16×1 multiplexer topology.

Making a Connection

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 CH2+ is routed to COM0+

signal connected to CH2– is routed to COM0–

signal connected to CH18+ is routed to COM1+

signal connected to CH18– is routed to COM1–

Pinout

The following figure and table identify the pins for the NI PXI-2527 in the 4-wire 16×1 multiplexer topology.