NI SCXI-1161 8-SPDT Topology

The following figure represents the NI SCXI-1161 in the 8-SPDT general purpose topology.

Making a Connection

You can control the channels using the niSwitch Connect Channels VI or the niSwitch_Connect function.

For example, to connect the NO terminal of channel 2 to the COM terminal of channel 2, and to disconnect the NC terminal of channel 2 from the COM terminal, call niSwitch_Connect(vi, "NO2", "COM2"). If you now want to connect NC2 to com2, first disconnect the existing connection. The sequence of calls for this task is as follows:

niSwitch_Disconnect(vi, "NO2", "COM2")

niSwitch_Connect(vi, "NC2", "COM2")

Note  niSwitch_Disconnect(vi, "NO2", "COM2") does not activate the relay until niSwitch_Connect(vi, "NC2", "COM2") is executed.