PXI-5_PXI_Express_Hardware_Specification_硬件规格书

陈先生528

PXI Express was created to build on the successful PXI-1: PXI Hardware Specification and the new
0 `5 s5 f# o$ G+ q. l: zCompactPCI Express standard to make new levels of peRFormance possible in modular instrumentation and
; C* [7 Y0 {7 ?# w* ^* N2 dautomation Systems. Similar to the PXI-1 standard, existing industry standards are leveraged by PXI Express
. ]5 K4 L) H! N1 h! [to benefit from high component availability at lower costs. PXI Express also continues to maintain software
compatibility with industry-standard personal computers, allowing customers to use the same software
tools and environments with which they are familiar. Not only does PXI Express provide a giant leap in
measurement and automation performance, but it also provides a high level of compatibility with PXI-1, so
customers can preserve their investment in PXI-1 Modules.
8 V2 t' |2 R) P7 vPXI Express leverages the electrical features defined by the widely adopted PCI Express specification for data
movement. This is accomplished by PXI Express Modules complying with the CompactPCI Express
specification, which combines the PCI Express electrical specification with rugged Eurocard mechanical
" |7 h6 x2 J; S% d/ S+ h7 mpackaging and high-performance differential connectors. This allows measurement and automation Systems
* Z- `3 b/ R4 |" Mbased on PXI Express to have a data throughput of 6 GBytes/sec in each direction. PXI Express also offers
two-way interoperability with CompactPCI Express products.
Instrumentation capabilties within PXI Express can reach a new level of performance by providing
point-to-point differential triggers, point-to-point differential variable clocks, and a 100 MHz differential
1 D  {( s  ]# t) M* M8 g6 Y  |System clock. The highly used bussed triggers, point-to-point triggers, and 10 MHz clock defined in the
1 F7 o. u* o9 {8 Z, z& u+ lPXI-1 specification are maintained. This allows PXI Express Module designers to make optimized cost versus
, m1 `* u2 g/ F& M- vperformance tradeoff's when implementing instrumentation features.
PXI Express maintains compatibility with Modules designed to be compliant with the PXI-1 specification in
two ways. First, PXI Express alows Chassis to have slots that are defined in the PXI-1 specification. Second,
) g" n  [/ \# l* o5 lPXI Express defines a slot that accepts either a high-performance Module that uses PCI Express for data
- U: L0 Z) j! x% l" ^transfer or a Module designed to the PXl-1 specification that has had a connector change. Of course, this also
means PXI Express alows for the compatibility with Modules designed to the CompactPCI specification.
By implementing PCI Express, PXI Express Systems can leverage the large base of existing industry- standard
. L- W! K0 d8 L* P& \software. Desktop PC users have access to different levels of software, from operating systems to low-level
device drivers to high-level instrument drivers to complete graphical APIs. All of these software levels can be
% \& G% o& J3 h! }- b4 \used in PXI Express Systems. The PXI Systems Alliance maintains a separate Software Specifcation for PXI
+ {1 o- k' [  m1 \! C( M7 L6 T4 H1 jExpress Modules, Chassis, and Systems. By having a separate Software Specification, the PXI Systems
Alliance can more quickly adopt the latest operating Systems and software standards. PXI Express Modules,
Chassis, and Systems developed to comply with this PXI Hardware Specification must also comply with the
PXI-6: PXI Express Sofware Specification.

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道法自然

创建PXI Express是基于成功的PXI-1：PXI硬件规范和新的 9 I：L1 E！@％|）g9 R CompactPCI Express标准，使模块化仪器和 ] 0 q5 k5 S7 O2 I / h6 B 自动化系统中的pe RF性能达到新的水平。类似于PXI-1标准，PXI Express 1 E 利用了现有的行业标准！{'w（J）J 以较低的成本受益于高组件可用性。PXI Express还继续保持软件 与行业标准个人计算机的兼容性，从而使客户可以使用他们熟悉的相同软件工具和环境。

stephen

正好需要，谢谢分享
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icemenccc

正好在用，看看