National Instruments NI 784xR User Manual

Also see for NI 781xR: User manual User manual

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National Instruments NI 784xR User Manual Manual pdf 13 page image

Chapter 1 Introduction© National Instruments Corporation 1-3 R Series Intelligent DAQ User ManualPXI-specific features are implemented on the J2 connector of theCompactPCI bus. Table 1-2 lists the J2 pins used by the NI PXI-78xxR.The NI 78xxR is compatible with any CompactPCI chassis with a sub-busthat does not drive these lines. Even if the sub-bus is capable of drivingthese lines, the R Series device is still compatible as long as those pins onthe sub-bus are disabled by default and are never enabled.Caution Damage can result if the J2 lines are driven by the sub-bus.Overview of Reconfigurable I/OThis section explains reconfigurable I/O and describes how to use theLabVIEW FPGA Module to build high-level functions in hardware.Refer to Chapter 2, Hardware Overview of the NI 78xxR, for descriptionsof the I/O resources on the NI 78xxR.Reconfigurable I/O ConceptR Series Intelligent DAQ devices are based on a reconfigurable FPGA coresurrounded by fixed I/O resources for analog and digital input and output.You can configure the behavior of the reconfigurable FPGA to match therequirements of the measurement and control system. You can implementthis user-defined behavior as an FPGA VI to create an application-specificI/O device.Table 1-2. Pins Used by the NI PXI-78xxRNI PXI-78xxR Signal PXI Pin Name PXI J2 Pin NumberPXI Trigger<0..7> PXI Trigger<0..7> A16, A17, A18, B16, B18, C18, E16, E18PXI Clock 10 MHz PXI Clock 10 MHz E17PXI Star Trigger PXI Star Trigger D17LBLSTAR<0..12> * LBL<0..12> A1, A19, C1, C19, C20, D1, D2, D15, D19,E1, E2, E19, E20LBR<0..12> * LBR<0..12> A2, A3, A20, A21, B2, B20, C3, C21,D3, D21, E3, E15, E21* NI PXI-781xR/783xR only