PXI-7344 NI 适用于简单和复杂运动应用

PXI‑7344同时适用于简单和复杂运动应用。 它包括两个处理器和一个实时板载系统，并具有多轴插值功能。 PXI‑7344为嵌入式实时运动操作或以主机为中心的编程环境提供了混合运动轨迹控制和完全协调的圆形、线性、点对点、齿轮和矢量空间控制
传统的数字万用表通常重视分辨率和精度，而不关注高速采集功能。当然，作为一个基本的物理函数，在噪声性能与速度之间有内在局限性。电阻的Johnson噪声是理论限制的一种，另外半导体设备技术还包含另一些实际局限性。但是您有许多其他选择可以帮助您实现最高可能的测量性能。

PXI-7344

某些专用的高分辨率数字万用表能够提供高分辨率和高采集速度，但是其价格十分昂贵，通常在8000美元左右，而且只能用于占用大量系统或工作台空间的完整机架配置。
另一个数字万用表速度限制是由传统的硬件平台驱动的，即GPIB（IEEE 488）接口总线。自1970年以来使用的接口尽管是速度、灵活性和成本折中的产物，依然被公认为是标准的接口。大多数传统的“箱式”数字万用表使用这个接口，虽然现在已经出现了使用USB和以太网等其他总线标准的传统数字万用表。所有这些接口都通过将信息发送给仪器并等待响应与数字万用表进行通信，这比在PXI模块化仪器中使用的基于寄存器的访问速度慢。

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