這SCXI-1128(零件號:776572-28)是一個高電壓、強狀態(tài)交換模塊，可以實現(xiàn)為多路復(fù)用器或框架。作為多路復(fù)用器鎳SCXI-1128可以在多種復(fù)用模式下工作。這些模式包括:大量站點框架的一個鏈接，差分聯(lián)合框架的兩個鏈接，或電阻估計的三個和四個鏈接模式，包括溫度指示器電阻(RTD)和熱敏電阻。使用前置SCXI端子板時SCXI-1128被轉(zhuǎn)換成單線64×1矩陣、32×1雙線矩陣、2×4×8矩陣或4×16×1矩陣。超過上任何最大信號評估的連接，如電源信號接地或反過來鎳SCXI-1128，可能會損壞與SCXI機箱、主機和相關(guān)的任何模塊SCXI-1128模塊。

用戶可以配置SCXI-1128作為多路復(fù)用器/掃描儀工作。利用這種操作方法，用戶可以以三種不同的方式安排輸出分流:雙線、單線和四線通道配置。在所有檢查模式下，多路復(fù)用器中一次只關(guān)閉一個通道。該型號適用于測量類別II，可支持300 VDC/250 VAC的信號電壓。

該儀器的最大開關(guān)功率為9 W/通道，最大開關(guān)電流為30mA/通道，DC路徑電阻為% 3c 1.2kω，繼電器工作時間典型值為0.25 ms，釋放時間典型值為0.08 ms，最大掃描速率為1200通道。

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 k?, 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.