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The following figure represents the NI SCXI-1193 quad 8×1 multiplexer topology.
The following figure shows the reset position of the NI SCXI-1193 in the quad 8×1 multiplexer topology. The reset position is the power-on configuration of the module.
The NI SCXI-1193 in this topology contains four banks of eight input channels connected to a common channel. These input channels are referred to as ch<0..31>, and the four common channels are referred to as com<0..3>. You can only connect to the common channel that is in the same bank. The banks are organized as follows:
|Input Channels||Common Channel|
|ch0, ch1, ch2, ch3, ch4, ch5, ch6, ch7||com0|
|ch8, ch9, ch10, ch11, ch12, ch13, ch14, ch15||com1|
|ch16, ch17, ch18, ch19, ch20, ch21, ch22, ch23||com2|
|ch24, ch25, ch26, ch27, ch28, ch29, ch30, ch31||com3|
For example, you can connect ch8 to com1; however, you cannot connect ch8 to com0 in this topology.
You can connect the channels of the NI SCXI-1193 using the niSwitch Connect Channels VI or the niSwitch_Connect function. For example, to connect channel 16 to common 2, call the niSwitch Connect Channels VI or the niSwitch_Connect function with the channel 1 parameter set to ch16 and the channel 2 parameter set to com2.
When scanning the NI SCXI-1193, a typical scan list entry could be ch2->com0;. This entry routes the signal from ch2 to com0.