This is the third part in our series about the National Instruments SCXI Series. There are several types of switches in the SCXI series. The first type is the Multiplexer/Matrix Switch Module. One of these Multiplexer/Matrix Modules is the SCXI-1127 (electromechanical relay). Another example is the SCXI-1128 (solid-state relay). Both are devices that function as multiplexer or matrix modules. As a multiplexer, they can operate in different multiplexing modes, such as 1-wire for resistive measurements including RTDs and low-resistance measurements. With the SCXI-1332 front-mounting terminal block, the SCXI-1127 and SCXI-1128 become a 4×8 2-wire matrix. Expanding the multiplexer or matrix channel count is as easy as adding additional modules.
Continue reading “National Instruments SCXI: Part 3”