NI SCXI-1193 Quad 8×1 Multiplexer Topology

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Edition Date: April 2015

Part Number: 375472H-01

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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.

Making a Connection

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, ch23com2
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.

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