這SCXI-1530(零件號:777966-30)是一款信號調(diào)理模塊，設(shè)計(jì)用于集成電子壓電(IEPE)加速度計(jì)和麥克風(fēng)。該模塊可以與加速度計(jì)調(diào)理模塊配合使用，這些模塊在每個(gè)通道上都集成了可編程電流、增益和濾波器配置。這鎳SCXI-1530包括4個(gè)輸入通道、上電和斷電時(shí)1Mω的放大器輸入阻抗、交流放大器耦合、4 mA +/-10%的加速度計(jì)輸入激勵電流、400Kω以上的電流源阻抗、+/- 10 V的最大輸出電壓和200ω的輸出阻抗。

在……上SCXI-1530聲音和振動輸入模塊加速度計(jì)由電流源激勵。用戶可以削弱電流源，以量化框架中的噪聲。還有一個(gè)接地開關(guān)，用戶可以通過軟件打開或關(guān)閉，以適應(yīng)以地為參考和非參考的加速度計(jì)。升壓信號交流耦合到可編程增益儀表增強(qiáng)器。這個(gè)增強(qiáng)器以1、10或100的增益幫助輸入信號。接下來，信號經(jīng)過一個(gè)可編程數(shù)據(jù)傳輸容量低通貝塞爾濾波器，以減少混疊。同步采樣保持電路確保所有通道都參考相同的時(shí)間點(diǎn)。最后，經(jīng)調(diào)節(jié)的信號被發(fā)送到多路復(fù)用器電路和反向連接器，以改善信號關(guān)聯(lián)。

The SCXI-1530 (Part Number: 777966-30) is a signal conditioning module designed for integrated electronic piezoelectric (IEPE) accelerometers and microphones. This module can work with accelerometer conditioning modules that incorporate programmable current, gain, and filter configurations on every channel. The NI SCXI-1530 includes 4 input channels, 1 M? of amplifier input impedance while powered on and off, AC amplifier coupling, 4 mA +/-10% of accelerometer input excitation current, more than 400 K? of current source dynamite impedance, +/- 10 V of maximum output voltage, and 200 ? of output impedance.

On the SCXI-1530 Sound and Vibration Input Module, the accelerometer is stimulated by the current source. The user can debilitate the current source to quantify noise in the framework. There is also a ground switch that the user can turn on or off with software to suit both ground-referenced and non-referenced accelerometers. The boosts signal is AC-coupled to a programmable-gain instrumentation intensifier. This intensifier helps the incoming signal by a gain of 1, 10, or 100. Next, the signal goes through a programmable-data transfer capacity low-pass Bessel filter for aliasing reduction. The synchronous sample-and-hold circuitry assurers that all channels are referenced to a similar moment in time. Lastly, the conditioned signal is sent to the multiplexer circuitry and back connectors to improve the signal association.