National Instruments SCXI-1128 Matrix/Multiplexer Switch Module

The SCXI-1128 (Part Number: 776572-28) is a high-voltage, strong state exchanging module that can be implemented as a multiplexer or framework. As a multiplexer, the NI SCXI-1128 can work in various multiplexing modes. These modes include: one link for a vast number of station frameworks, two links for differential combine frameworks, or three and four link modes for resistive estimations, including temperature indicators resistance (RTD) and thermistors. With front-mounted SCXI terminal blocks, the SCXI-1128 is changed over into a 1-wire 64x1 matrix, 32x1 2-wire matrix, 2x 4x8 matrix, or 4x16x1 matrix. Connections, like power signals to ground and the other way around, that surpass any of the maximum signal evaluations on the NI SCXI-1128, can harm any of the modules associated with the SCXI chassis, the host PC, and the SCXI-1128 module.
The user can configure the SCXI-1128 to work as a multiplexer/scanner. Utilizing this method of operation, the user can arrange diverts in the output in three distinctive ways: 2-wire, 1-wire, as well as 4-wire channel configurations. In all checking modes, just a single channel is shut at once in the multiplexer. This model is rated for Measurement Category II and can support signal voltages of 300 VDC/250 VAC.

This instrument offers a maximum switching power of 9 W per channel, a maximum switching current of 30 mA per channel, a DC path resistance of <1.2 kΩ, a relay operation time of 0.25 ms typical, a release time of 0.08 ms typical, and a maximum scan rate of 1200 channels. The device has a recommended warm-up time of 5 minutes.

The SCXI-1128 can be programmed with software packages or application development environments (ADEs) such as the NI-SWITCH driver software, LabVIEW, or Measurement Studio.

The SCXI-1128 weighs 6 oz, and measures 7.8 x 1.2 x 6.8 in. in physical dimensions. It has a recommended operating temperature range of 0 °C to 50 °C, a storage temperature range of –20 °C to 70 °C, and a non-condensing relative humidity range of 5% to 85%. The module is designed to comply with the following electrical safety standards: IEC 61010-1, EN 61010-1, UL 61010-1, and CSA 61010-1.