2008年4月8日消息，NI宣布推出NI USB-6509，一款供以動力的總線便攜式USB數字化I/O設備，用于大范圍的數據收集。由于具備96雙向數字化I/O通道和即插即用USB接口，該設備是工業(yè)控制和自動化測試應用的理想選擇，此設備所擁有的多項功能已足夠用于多目標數據采集和學術應用。 工業(yè)特征設置包括可編程級，數字化I/O看門狗計時器，改變探測和可編程輸入過濾器。由于具備可編程動力級，工程師們可以預確定USB-6509設備供以動力的等級，確保一致性。當與一些工業(yè)執(zhí)行器連接時，如泵、閥、電機或繼電器，該設備的可靠操作性顯而易見。數字化I/O看門狗可探測到多種故障情況，如電腦死機、對用戶自定義的安全級別實現(xiàn)自動反映。通過改變探測，在數字線改變之后，設備能自動引發(fā)應用以執(zhí)行閱讀操作。同樣的，工程師們可以消除無意識的小過失并避免由可編程輸入過濾器噪音引起的錯誤示數。 96通道設備可與晶體管-晶體管邏輯電路，互補金屬氧化半導體和5V數字邏輯級相兼容，8根線的每一個端口都是可單另配置輸入輸出的。USB-6509可驅動外部數字服務，如電流為24 mA的固體繼電器（SSRs）?？偩€設備通過數字輸出可達215mA。可選擇的12VDC電源可用于額外的源電流。 USB-6509與NI- DAQmx驅動軟件一起工作，其簡單易用，有可用于編程的直接界面。設備還可以與NI LabVIEW, NI LabWindows™/CVI, ANSI C/C++, Visual Basic .NET, C# 和Visual Basic 6.0相兼容。更多信息，讀者可登錄www.ni.com/digitalio 。 [font=times]original text [/font] [font=times]National Instruments Introduces High-Density Industrial Digital I/O for USB [/font] [font=times][color=#708090]April 8, 2008 – National Instruments today announced the NI USB-6509, a bus-powered, portable, USB digital I/O device for acquiring data in a broad range of applications. With 96 bi-directional digital I/O channels and plug-and-play USB connectivity, the device is ideal for industrial control and automated test applications yet versatile enough for general-purpose data acquisition and academic applications. The The industrial feature set includes programmable power-up states, digital I/O watchdog timers, change detection and programmable input filters. With programmable power-up states, engineers can pre-define the state in which the USB-6509 device powers up, ensuring consistent, reliable operation when connected to industrial actuators such as pumps, valves, motors or relays. Digital I/O watchdog timers can detect a variety of fault conditions, such as a computer crash, and automatically respond by setting the outputs to a user-defined safe state. With change detection, the device automatically triggers an application to perform a read operation after a digital line changes state. Also, engineers can eliminate unintended glitches and spikes in input data and avoid false readings caused by noise with programmable input filters. The 96-channel device is compatible with transistor–transistor logic （TTL）, complementary metal oxide semiconductor （CMOS） and 5 V digital logic levels, and each port of eight lines is individually configurable for input or output. The USB-6509 can drive external digital devices such as solid-state relays （SSRs） with current up to 24 mA per line while pull-up and pull-down resistors included on the device stabilize the bus potential during a non-access state. The bus-powered device can source up to 215 mA total across all digital output lines. An optional 12 VDC power supply is available for additional sourcing current. The USB-6509 works with NI-DAQmx driver software, which features an easy-to-use and intuitive interface for programming. The device is also compatible with NI LabVIEW, NI LabWindows™/CVI, ANSI C/C++, Visual Basic .NET, C# and Visual Basic 6.0. For more information, readers can visit www.ni.com/digitalio.[/color][/font]