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Bus Speed for PCIe-6537/6536 NOTE : Since PCI Express is a serial based technology, data can be sent over the bus in two directions at once. Normal PCI is Parallel, and as such all data goes in one direction around the loop. Each 1x lane in PCI Express can transmit in both directions at once. URL: http://digital.ni.com/public.nsf/allkb/1330934D13E1E9CC862572F3006D31DC

High Speed Digital Calibration Requirments I can see from the National Instruments calibration page that 655x devices can be calibrated, however the 654x and 656x device cannot. When will calibration for these device be available, or do they not require calibration? URL: http://digital.ni.com/public.nsf/allkb/DEC59D0F7F86126F862572DD005E9EBE

Firmware Incompatability With Different Versions of DAQmx Base. Firmware incompatability can cause the following problems: The lsdaq utility is telling me the device firmware on my USB-6008, USB-6009 or USB-6501 is incompatable. How do I fix this? I upgraded my NI DAQmx Base from version 2.2 or earlier to 3.0 or later. My URL: http://digital.ni.com/public.nsf/allkb/91CBCFE9E171C845862572CF0077D8F9

Why do I get Error -200898 during Hardware-timed Digital Input/Output? I am trying to do hardware-timed digital I/O on one or more digital lines (but not the full digital port) with my digital input/output or multifunction data acquisition card, but I get NI-DAQmx error -200898 when running my program. What is this error and how can it be corrected? URL: http://digital.ni.com/public.nsf/allkb/370BD28D3D81EB95862572D0000B1C48

Expected Voltage Drop on the Digital Output Lines of NI-651x Devices I am using an NI-651x digital board, one of the 30 V bank isolated industrial devices. These devices require an external power supply for sourcing and sinking output signals. What kind of voltage drop can I expect between Vcc and PX.X for sourcing outputs or PX.X and Ground URL: http://digital.ni.com/public.nsf/allkb/8D46388A20C5A23E862572B8007E8C82

Termination and Cabling Considerations for HSDIO What considerations should I take into account when probing (also commonly known as "bus sniffing" or "snooping") the data bus with a HSDIO device? And where should I probe with respect to the transmitter and receiver? URL: http://digital.ni.com/public.nsf/allkb/72579EBFD781E95E862572AD0001FEDD

Extending your HSDIO Maximum Clock Rate with SerDes How can I read a serial bitstream that is faster than the HSDIO maximum clock rate? Likewise, can I generate a serial bitstream at a higher clock rates? How can this be implemented with serializers and deserializers (SerDes), and which products does National Instruments recommend? URL: http://digital.ni.com/public.nsf/allkb/8D92A482ED857CD5862572A600719F2E

What Differential Voltages Correspond to High and Low Logic Levels in CAN Protocol? I would like to acquire my CAN signals through a data acquisition board and to do so I need to know how to interpret the voltages on the differential lines (CAN_H and CAN_L) as logic levels high (dominant) and low (recessive). URL: http://digital.ni.com/public.nsf/allkb/F35676D3065CF292862572A400716B77

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

How do I synchronize multiple 653X devices in DAQmx? I have multiple 653X devices in my PC and I need to synchronize them with an shared clock. URL: http://digital.ni.com/public.nsf/allkb/F2B1273160F9C9E7862572820058537F