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PXI-6511
10 MHz參考時(shí)鐘連接器
當(dāng)NI PXI機(jī)箱上的10 MHz Ref In連接器檢測(cè)到信號(hào)時(shí)，背板會(huì)自動(dòng)
將PXI\U CLK10、PXIe\U CLK100和PXIe\U SYNC100信號(hào)鎖定到此外部時(shí)鐘，并
將這些信號(hào)分配到外圍插槽以進(jìn)行同步。
此外，您可以使用10 MHz Ref Out連接器將背板的PXI\U CLK10路由到另一個(gè)
用于同步的機(jī)箱，或者您可以插入定時(shí)和同步模塊（例如
PXIe-6674T），以驅(qū)動(dòng)具有更高穩(wěn)定性時(shí)鐘的機(jī)箱的PXI\U CLK10。
PXIe-1095、PXIe-1092和PXIe-1084上的10 MHz REF連接器包括在
機(jī)箱作為定時(shí)和同步升級(jí)選項(xiàng)的一部分。
圖6：。PXIe-1095機(jī)箱上的10 MHz參考輸入和輸出SMA連接器，用于多機(jī)箱同步
19B對(duì)等流媒體
處理密集型應(yīng)用程序（如5G無(wú)線通信原型制作或?qū)崟r(shí)頻譜分析（RTSA））需要添加在線、用戶定義的FPGA處理。鎳PXI
Express機(jī)箱和軟件支持從模塊化儀器到FPGA的對(duì)等通信
繞過(guò)PXI嵌入式控制器的在線信號(hào)處理模塊。
有關(guān)更多信息，請(qǐng)閱讀白皮書(shū)：業(yè)界高性能的流媒體體系結(jié)構(gòu)
PXI Express平臺(tái)。
圖7：。PXIe-1085 24 GB/s機(jī)箱提供8 GB/s對(duì)等流帶寬。
10 MHz REF Clock Connectors When the 10 MHz Ref In connector on NI PXI chassis detects a signal, the backplane automatically phase locks the PXI_CLK10, PXIe_CLK100, and PXIe_SYNC100 signals to this external clock and distributes these signals to the peripheral slots for synchronization. Additionally, you can use the 10 MHz Ref Out connector to route the backplane’s PXI_CLK10 to another chassis for synchronization, or you can insert a timing and synchronization module (for example, the PXIe-6674T) in the system timing slot to drive the PXI_CLK10 of the chassis with a higher stability clock. The 10 MHz REF connectors on the PXIe-1095, PXIe-1092, and PXIe-1084 are included on the rear of the chassis as part of their timing and synchronization upgrade options. Figure 6. 10 MHz Reference In and Out SMA connectors on the PXIe-1095 chassis for multi-chassis synchronization 19BPeer-to-Peer Streaming Processing-intensive applications such as prototyping 5G wireless communications or performing realtime spectrum analysis (RTSA) warrant the addition of in-line, user-defined FPGA processing. NI PXI Express chassis and software enable peer-to-peer communication from a modular instrument to an FPGA module for in-line signal processing that bypasses the PXI embedded controller. For more information, read the white paper: Streaming Architecture of the Industry’s Highest Performance PXI Express Platform. Figure 7. The PXIe-1085 24 GB/s chassis provides 8 GB/s peer-to-peer streaming bandwidth.
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