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Measuring the Output of a Serial Port for Low Level Analysis I'm using a serial device, and I'm unsure of the output of my serial port. Is there a way to view the signal that is being produced by the serial port in the lowest level possible. URL: http://digital.ni.com/public.nsf/allkb/79B995C3638F4177862572C900593631

Pinout For Serial Ports What is the pinout for my serial port? What pins do I need to connect for a loop back test? URL: http://digital.ni.com/public.nsf/allkb/B9A38929D546B796862572C7005F0644

串行端口的引脚定义 串口的引脚定义是怎样的? 用于loop back测试时需要连接哪些引脚? URL: http://digital.ni.com/public.nsf/allkb/B5FBBDC023E1CFB1862573C7004E7877

Where Can I Find The Warranty For My NI Hardware? I'm trying to find the warranty information for my NI hardware. Where can I find it? URL: http://digital.ni.com/public.nsf/allkb/8341879DC763DF5886257289005D816E

Pinout of the 100-Pin SCSI Connector for the PXI-8420/16 What is the Pinout for the 100-Pin SCSI Connector for the PXI-8420/16? URL: http://digital.ni.com/public.nsf/allkb/6C5475560392521F8625724A005FD367

843x系列硬件支持的波特率 我正在看NI PCI/PXI 843x设备的产品页，产品页上列出了设备最大的波特率是3Mb/s。可是在这个产品的用户手册/规格说明书中，最大波特率只有2Mb/s。哪份材料是正确的？ URL: http://digital.ni.com/public.nsf/allkb/DE903C4F037C788548257212001F37AB

Pinout For The 68-pin SCSI Connector Used on National Instruments Serial Boards Where can I find the pinout for the 68-pin SCSI connector used on National Instruments serial boards? URL: http://digital.ni.com/public.nsf/allkb/0044E335E0E17923862571E3003F1878

Baud Rates Supported by 843x Serial Hardware I am looking at the product page for my NI PCI/PXI 843x device, and it lists the maximum baud rate as 3Mb/s. However, the User Manual/Specifications document for this devices claims that the maximum baud rate is only 2Mb/s. Which resource is correct? URL: http://digital.ni.com/public.nsf/allkb/23FFC019F92E2D94862571B5007B4C16

RS-422 是否兼容 LabVIEW Real-Time？ 我需要使用 RS-422 与我的一些设备通信。是否可以在 LabVIEW Real-Time 中使用？ URL: http://digital.ni.com/public.nsf/allkb/93DC21C858DF42C54825719B0015EF14

RS-485的端口能够从RS-423的仪器获得数据吗？ 我有一个RS-423的仪器，现在想用NI RS-485卡从中获得数据，能够实现吗？ URL: http://digital.ni.com/public.nsf/allkb/BA03947EB71B9E944825717D00238447