PXI?7344同時適用于簡單和復(fù)雜運動應(yīng)用。 它包括兩個處理器和一個實時板載系統(tǒng)，并具有多軸插值功能。 PXI?7344為嵌入式實時運動操作或以主機為中心的編程環(huán)境提供了混合運動軌跡控制和完全協(xié)調(diào)的圓形、線性、點對點、齒輪和矢量空間控制
傳統(tǒng)的數(shù)字萬用表通常重視分辨率和精度，而不關(guān)注高速采集功能。當(dāng)然，作為一個基本的物理函數(shù)，在噪聲性能與速度之間有內(nèi)在局限性。電阻的Johnson噪聲是理論限制的一種，另外半導(dǎo)體設(shè)備技術(shù)還包含另一些實際局限性。但是您有許多其他選擇可以幫助您實現(xiàn)最高可能的測量性能。

PXI-7344

某些專用的高分辨率數(shù)字萬用表能夠提供高分辨率和高采集速度，但是其價格十分昂貴，通常在8000美元左右，而且只能用于占用大量系統(tǒng)或工作臺空間的完整機架配置。
另一個數(shù)字萬用表速度限制是由傳統(tǒng)的硬件平臺驅(qū)動的，即GPIB（IEEE 488）接口總線。自1970年以來使用的接口盡管是速度、靈活性和成本折中的產(chǎn)物，依然被公認為是標(biāo)準(zhǔn)的接口。大多數(shù)傳統(tǒng)的“箱式”數(shù)字萬用表使用這個接口，雖然現(xiàn)在已經(jīng)出現(xiàn)了使用USB和以太網(wǎng)等其他總線標(biāo)準(zhǔn)的傳統(tǒng)數(shù)字萬用表。所有這些接口都通過將信息發(fā)送給儀器并等待響應(yīng)與數(shù)字萬用表進行通信，這比在PXI模塊化儀器中使用的基于寄存器的訪問速度慢。

PXI-7344

The PXI?7344 is suitable for both simple and complex motion applications. It includes two processors and a real-time onboard system with multi-axis interpolation. The PXI?7344 provides hybrid motion trajectory control and fully coordinated circular, linear, point-to-point, gear and vector space control for embedded real-time motion operations or host-centric programming environments
Traditional digital multimeters usually focus on resolution and accuracy, and do not focus on high-speed acquisition functions. Of course, as a basic physical function, there are inherent limitations between noise performance and speed. Resistive Johnson noise is one of the theoretical limitations, but semiconductor device technology contains other practical limitations. But you have many other options to help you achieve the highest possible measurement performance.

Certain dedicated high-resolution digital multimeters can provide high resolution and high acquisition speeds, but they are expensive, typically around $8,000, and can only be used in full rack configurations that take up a lot of system or workbench space.
Another digital multimeter speed limit is driven by a traditional hardware platform, namely the GPIB (IEEE 488) interface bus. The interface used since 1970 has been recognized as the standard interface, despite the trade-off between speed, flexibility, and cost. Most traditional “box” digital multimeters use this interface, although there are now traditional digital multimeters that use other bus standards such as USB and Ethernet. All of these interfaces communicate with digital multimeters by sending information to the instrument and waiting for a response, which is slower than the register-based access used in PXI modular instruments.

PXI-7344