2008年4月8日消息，NI宣布推出NI USB-6509，一款供以動(dòng)力的總線便攜式USB數(shù)字化I/O設(shè)備，用于大范圍的數(shù)據(jù)收集。由于具備96雙向數(shù)字化I/O通道和即插即用USB接口，該設(shè)備是工業(yè)控制和自動(dòng)化測(cè)試應(yīng)用的理想選擇，此設(shè)備所擁有的多項(xiàng)功能已足夠用于多目標(biāo)數(shù)據(jù)采集和學(xué)術(shù)應(yīng)用。 工業(yè)特征設(shè)置包括可編程級(jí)，數(shù)字化I/O看門狗計(jì)時(shí)器，改變探測(cè)和可編程輸入過(guò)濾器。由于具備可編程動(dòng)力級(jí)，工程師們可以預(yù)確定USB-6509設(shè)備供以動(dòng)力的等級(jí)，確保一致性。當(dāng)與一些工業(yè)執(zhí)行器連接時(shí)，如泵、閥、電機(jī)或繼電器，該設(shè)備的可靠操作性顯而易見。數(shù)字化I/O看門狗可探測(cè)到多種故障情況，如電腦死機(jī)、對(duì)用戶自定義的安全級(jí)別實(shí)現(xiàn)自動(dòng)反映。通過(guò)改變探測(cè)，在數(shù)字線改變之后，設(shè)備能自動(dòng)引發(fā)應(yīng)用以執(zhí)行閱讀操作。同樣的，工程師們可以消除無(wú)意識(shí)的小過(guò)失并避免由可編程輸入過(guò)濾器噪音引起的錯(cuò)誤示數(shù)。 96通道設(shè)備可與晶體管-晶體管邏輯電路，互補(bǔ)金屬氧化半導(dǎo)體和5V數(shù)字邏輯級(jí)相兼容，8根線的每一個(gè)端口都是可單另配置輸入輸出的。USB-6509可驅(qū)動(dòng)外部數(shù)字服務(wù)，如電流為24 mA的固體繼電器（SSRs）。總線設(shè)備通過(guò)數(shù)字輸出可達(dá)215mA。可選擇的12VDC電源可用于額外的源電流。 USB-6509與NI- DAQmx驅(qū)動(dòng)軟件一起工作，其簡(jiǎn)單易用，有可用于編程的直接界面。設(shè)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]