這鎳SCXI-1122(零件號(hào):776572-22)是16通道，隔離式傳感器多路復(fù)用器模塊，其被設(shè)計(jì)用于信號(hào)調(diào)節(jié)。除了16個(gè)隔離通道外，該模塊還有兩個(gè)隔離激勵(lì)通道。該模塊非常適合應(yīng)變儀、熱敏電阻、RTD、電壓源、毫伏源和熱電偶等應(yīng)用的信號(hào)調(diào)理。

該模塊設(shè)計(jì)為在兩種模式下運(yùn)行。在雙線(xiàn)掃描模式下，所有16個(gè)輸入通道都用于輸入。然而，在四線(xiàn)掃描模式下，8個(gè)上部通道用作檢測(cè)引線(xiàn)，而8個(gè)下部通道被配置和用作電流輸出通道。這鎳SCXI-1122可以使用國(guó)家文書(shū) 實(shí)驗(yàn)室電腦+，MIO-16，以及SCXI-1200董事會(huì)。對(duì)于單通道讀取，用戶(hù)也可以利用PC-LPM-16寄宿在SCXI-1122。

這鎳SCXI-1122有一個(gè)50針的陽(yáng)后連接器和一個(gè)48針的陰前連接器。該模塊的集成放大器在正常通電時(shí)以1Gω輸入阻抗工作，斷電時(shí)以100kω輸入阻抗工作。就其動(dòng)態(tài)特性而言，該型號(hào)具有4 Hz (-10 dB)或4 kHz軟件可選帶寬。該模塊有一個(gè)3極RC集成濾波器，設(shè)計(jì)工作在4 Hz (-10 dB)截止頻率，4 Hz帶寬NMR下為60 dB。此外，該模塊有2個(gè)輸出通道。電壓和電流水平分別保持在3.333V±0.04%和1.0mA±0.04%左右。

The NI SCXI-1122 (Part Number: 776572-22) is a 16-Channel, Isolated Transducer Multiplexer Module, which is designed for signal conditioning. Apart from 16 isolated channels, this module has two isolated excitation channels as well. This module is an excellent choice for applications like the signal conditioning of strain gauges, thermistors, RTDs, volt sources, millivolt sources, and thermocouple.

This module is designed to operate in two modes. In two-wire scan mode, all 16 input channels are used for input. However, in four-wire scan mode eight of the upper channels are used as sense leads, while the eight lower eight channels are configured and utilized as current output channels. The NI SCXI-1122 can operate with the National Instruments Lab-PC+, MIO-16, and the SCXI-1200 boards. For single channel reads, the user can also utilize the PC-LPM-16 board with the SCXI-1122.

The NI SCXI-1122 has a 50-pin male rear connector and a 48-pin female front connector. The integrated amplifier of this module operates at 1 G? input impedance with normal power on and with 100 k? with power off. As far as its dynamic characteristics are concerned, this model comes with 4 Hz (-10 dB) or 4 kHz software selectable bandwidth. This module has a 3-pole RC, integrated filter, which is designed to operate at 4 Hz (-10 dB) cutoff frequency and 60 dB at 4 Hz bandwidth NMR. In addition, this module has 2 output channels. The voltage and current level remain around 3.333 V ±0.04% and 1.0 mA ±0.04% respectively.