這SCXI-1127(零件號:776572-27)是高壓矩陣/多路復(fù)用器模塊有多種配置可供選擇:1 x 32，雙線多路器兩個1 x 16雙線多路器，和一個4線1 x 8雙線多路器。使用特殊的端子板，例如4 x 8，2線或1 x 32，2線，還可以有更多的配置矩陣。通過使用軟件可配置的開關(guān)，該模塊還可以用作1 x 64，1線或1 x 64，4線多路器。這鎳SCXI-1127非常適合低電壓和高電壓。對于低壓測量，這矩陣/多路復(fù)用器開關(guān)模塊利用極低熱偏移繼電器保證精確測量。另一方面，對于高壓測量，該模塊在200 mA負(fù)載下可承受250 Vrms的信號，在1 A負(fù)載下可承受30 VDC的信號。

這鎳SCXI-1127具有多功能掃描結(jié)構(gòu)。用戶可以任意掃描通道，并且在一次掃描中有多種輸入模式，這有助于將多種類型的傳感器連接到一個模塊。這SCXI-1127有兩種掃描方法:軟件掃描和硬件定時掃描。軟件掃描允許通過軟件選擇頻道。這個過程不需要觸發(fā)連接。此外，軟件掃描不提供硬件定時掃描所提供的時間精確度。硬件定時掃描使DMM等測量設(shè)備能夠通過數(shù)字觸發(fā)信號與通信鎳SCXI-1127。還有兩種類型的硬件定時掃描:同步掃描和握手。同步掃描只需要從設(shè)備到多路復(fù)用器的單個信號，但是握手需要從多路復(fù)用器鏈接到設(shè)備的另一個信號。

The SCXI-1127 (Part Number: 776572-27) is a high-voltage Matrix/Multiplexer Module with several configurations available: 1 x 32, 2-wire multiplexer, two 1 x 16, 2-wire multiplexer, and a four 1 x 8, 2-wire multiplexer. A few more configurations are possible with a special terminal block, such as a 4 x 8, 2-wire or 1 x 32, 2-wire matrix. With the use of software-configurable switches, the module can additionally be utilized as a 1 x 64, 1-wire or 1 x 64, 4-wire multiplexer. The NI SCXI-1127 is well-suited for low and high voltages. For low-voltage measurements, this Matrix/Multiplexer Switch Module utilizes relays with extremely low thermal offset to guarantee precise measurements. On the other hand, for high-voltage measurements, this module can withstand signals to 250 Vrms at a 200 mA load and 30 VDC at a 1 A load.

The NI SCXI-1127 has a versatile scanning construction. The user can scan the channels arbitrarily and have several input modes in one scan, which helps when linking numerous sensor types to a single module. The SCXI-1127 has two scanning methods: software scanning and hardware-timed scanning. Software scanning allows channels to be chosen through the software. This process does not necessitate trigger connections. In addition, software scanning does not provide the time preciseness that hardware-timed scanning does. Hardware-timed scanning enables the measurement device, such as a DMM, to communicate through digital trigger signals to the NI SCXI-1127. There are also two types of hardware-timed scanning: synchronous scanning and handshaking. Synchronous scanning only needs a single signal from the device to the multiplexer, but handshaking necessitates another signal linked from the multiplexer to the device.