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Warranty The NI 6230 is warranted against defects in materials and workmanship for a period of three years from the date of shipment, as evidenced by receipts or other documentation. National Instruments will, at its option, repair or replace equipment that proves to be defective during the warranty period.
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NATIONAL INSTRUMENTS PRODUCTS ARE INCORPORATED IN A SYSTEM OR APPLICATION, INCLUDING, WITHOUT LIMITATION, THE APPROPRIATE DESIGN, PROCESS AND SAFETY LEVEL OF SUCH SYSTEM OR APPLICATION.
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These classes are known as Class A (for use in industrial-commercial locations only) or Class B (for use in residential or commercial locations). All National Instruments (NI) products are FCC Class A products. Depending on where it is operated, this Class A product could be subject to restrictions in the FCC rules. (In Canada, the Department of Communications (DOC), of Industry Canada, regulates wireless interference in much the same way.) Digital...
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Single-Ended Connection Considerations ............4-17 Single-Ended Connections for Floating or Grounded Signal Sources ................4-18 Field Wiring Considerations..................4-18 Analog Input Timing Signals ..................4-19 AI Sample Clock Signal.................. 4-22 Using an Internal Source ..............4-22 NI 6230 User Manual viii ni.com...
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Method 3—Measure Large Range of Frequencies Using Two Counters................. 7-12 Choosing a Method for Measuring Frequency ......... 7-13 Position Measurement..................7-15 Measurements Using Quadrature Encoders........7-15 Measurements Using Two Pulse Encoders ........7-17 Two-Signal Edge-Separation Measurement ........... 7-18 NI 6230 User Manual ni.com...
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Real-Time System Integration Bus (RTSI) ..............10-3 RTSI Connector Pinout ................... 10-4 Using RTSI as Outputs ................... 10-5 Using RTSI Terminals as Timing Input Signals..........10-6 RTSI Filters..................... 10-6 PXI Clock and Trigger Signals..................10-8 PXI_CLK10 ....................10-8 NI 6230 User Manual ni.com...
The NI 6230 User Manual contains information about using the National Instruments 6230 M Series data acquisition (DAQ) devices with NI-DAQ 8.0 and later. NI 6230 devices feature eight analog input (AI) channels, four analog output (AO) channels, two counters, six lines of digital input (DI), and four lines of digital output (DO).
Programs»National Instruments»NI-DAQ»DAQ Getting Started Guide. The NI-DAQ Readme lists which devices are supported by this version of NI-DAQ. Select Start»All Programs»National Instruments»NI-DAQ» NI-DAQ Readme. The NI-DAQmx Help contains general information about measurement concepts, key NI-DAQmx concepts, and common applications that are applicable to all programming environments.
.NET and Visual C++ class libraries. This help collection is integrated into the Visual Studio .NET documentation. In Visual Studio .NET, select Help»Contents. Note You must have Visual Studio .NET installed to view the NI Measurement Studio Help. NI 6230 User Manual xviii ni.com...
About This Manual Device Documentation and Specifications The NI 6230 Specifications contains all specifications for NI 6230 M Series devices. NI-DAQ 7.0 and later includes the Device Document Browser, which contains online documentation for supported DAQ, SCXI, and switch devices, such as help files describing device pinouts, features, and operation, and PDF files of the printed device documents.
Getting Started M Series NI 6230 devices feature eight analog input (AI) channels, four analog output (AO) channels, two counters, six lines of digital input (DI), and four lines of digital output (DO). If you have not already installed your device, refer to the DAQ Getting Started Guide.
Chapter 1 Getting Started Device Specifications Refer to the NI 6230 Specifications, available on the NI-DAQ Device Document Browser or , for more detailed information ni.com/manuals on the NI 6230 device. Device Accessories and Cables NI offers a variety of accessories and cables to use with your DAQ device.
PFI/Static DIO Figure 2-2. General NI 6230 Block Diagram DAQ-STC2 The DAQ-STC2 implements a high-performance digital engine for NI 6230 data acquisition hardware. Some key features of this engine include the following: • Flexible AI and AO sample and convert timing •...
Chapter 2 DAQ System Overview Cables and Accessories NI offers a variety of products to use with NI 6230 devices, including cables, connector blocks, and other accessories, as follows: • Cables and cable assemblies – Shielded – Unshielded ribbon •...
Chapter 2 DAQ System Overview Programming Devices in Software National Instruments measurement devices are packaged with NI-DAQ driver software, an extensive library of functions and VIs you can call from your application software, such as LabVIEW or LabWindows/CVI, to program all the features of your NI measurement devices. Driver software...
— — No connect—Do not connect signals to these terminals. RTSI Connector Pinout Refer to the RTSI Connector Pinout section of Chapter 10, Digital Routing and Clock Generation, for information on the RTSI connector. NI 6230 User Manual ni.com...
Analog Input Figure 4-1 shows the analog input circuitry of NI 6230 devices. Isolation Barrier AI <0.. n > DIFF, Digital AI FIFO RSE, NI-PGIA AI Data Isolators or NRSE Input Range AI GND Selection AI Terminal Configuration Selection Figure 4-1. NI 6230 Analog Input Circuitry...
The NI-PGIA amplifies or attenuates the AI signal depending on the input range. You can individually program the input range of each AI channel on your M Series device. NI 6230 User Manual ni.com...
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For more information on programming these settings, refer to the NI-DAQmx Help or the LabVIEW 8.x Help. Table 4-1 shows the input ranges and resolutions supported by the NI 6230 device. Table 4-1. Input Ranges for NI 6230...
Chapter 4 Analog Input Analog Input Ground-Reference Settings NI 6230 devices support the analog input ground-reference settings shown in Table 4-2. Table 4-2. Analog Input Ground-Reference Settings AI Ground-Reference Settings Description DIFF In differential (DIFF) mode, the NI 6230 device measures the difference in voltage between two AI signals.
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Maximum Working Voltage section of the NI 6230 Specifications. Exceeding the maximum input voltage or maximum working voltage of AI signals distorts the measurement results.
Settling time refers to the time it takes the NI-PGIA to amplify the input signal to the desired accuracy before it is sampled by the ADC. The NI 6230 Specifications shows the device settling time. M Series devices are designed to have fast settling times. However several factors can increase the settling time which decreases the accuracy of your measurements.
The capacitance of the cable also can increase the settling time. National Instruments recommends using individually shielded, twisted-pair wires that are 2 m or less to connect AI signals to the device.
200 mV to match channel 1. Then scan channels in the order: 0, 2, 1. Inserting a grounded channel between signal channels improves settling time because the NI-PGIA adjusts to the new input range setting faster when the input is grounded. NI 6230 User Manual ni.com...
AI GND Referenced Single-Ended (RSE) Isolation Isolation Barrier Barrier AI + – – AI GND AI GND – – Refer to the Analog Input Ground-Reference Settings section for descriptions of DIFF and RSE modes. NI 6230 User Manual 4-12 ni.com...
100 mV, but the difference can be much higher if power distribution circuits are improperly connected. If a grounded signal source is incorrectly measured, this difference can appear as measurement error. The NI 6230 isolates the ground of the instrument from the PC to help eliminate this error.
DIFF signal connections also allow input signals to float within the common-mode limits of the PGIA. Differential Connections for Ground-Referenced Signal Sources Figure 4-4 shows how to connect a ground-referenced signal source to a channel on the device configured in DIFF mode. NI 6230 User Manual 4-14 ni.com...
V in the figure. Refer to the NI 6230 Specifications for the usable range of V Common-Mode Signal Rejection Considerations For signal sources that are already referenced to some ground point with respect to the device, the PGIA can reject any voltage caused by ground potential differences between the signal source and the device.
This figure shows AI GND connected to the ground reference point for the floating signal source. If you do not connect AI GND, the source is not likely to remain within the common-mode signal range of the PGIA due to NI 6230 User Manual 4-16 ni.com...
Selected Channel in RSE or NRSE Configuration Figure 4-6. Single-Ended Connections for Floating Signal Sources (RSE Configuration) Refer to the NI 6230 Specifications for the usable range of V Common-Mode Signal Rejection Considerations For signal sources that are already referenced to some ground point with respect to the device, the PGIA can reject any voltage caused by ground potential differences between the signal source and the device.
Analog Input Timing Signals In order to provide all of the timing functionality described throughout this section, NI 6230 devices have a flexible timing engine. Figure 4-7 summarizes all of the timing options provided by the analog input timing engine. Also refer to the...
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The sample counter is loaded with the specified number of posttrigger samples, in this example, five. The value decrements with each pulse on ai/SampleClock, until the value reaches zero and all desired samples have been acquired. NI 6230 User Manual 4-20 ni.com...
Chapter 4 Analog Input NI 6230 devices feature the following analog input timing signals. • AI Sample Clock Signal • AI Sample Clock Timebase Signal • AI Convert Clock Signal • AI Convert Clock Timebase Signal • AI Hold Complete Event Signal •...
Clock, consists of one or more conversions. You can specify either an internal or external signal as the source of ai/ConvertClock. You also can specify whether the measurement sample begins on the rising edge or falling edge of ai/ConvertClock. NI 6230 User Manual 4-24 ni.com...
(using AI channels 0, 1, 2, and 3) and demonstrates proper and improper sequencing of ai/SampleClock and ai/ConvertClock. It is also possible to use a single external signal to drive both ai/SampleClock and ai/ConvertClock at the same time. In this mode, each NI 6230 User Manual 4-26 ni.com...
Use a reference trigger (ai/ReferenceTrigger) signal to stop a measurement acquisition. To use a reference trigger, specify a buffer of finite size and a number of pretrigger samples (samples that occur before the reference NI 6230 User Manual 4-28 ni.com...
LabVIEW 8.x Help for more information. Routing AI Pause Trigger Signal to an Output Terminal You can route ai/PauseTrigger out to RTSI <0..7>. Note Pause triggers are only sensitive to the level of the source, not the edge. NI 6230 User Manual 4-30 ni.com...
Analog Output NI 6230 devices have four AO channels that are controlled by a single clock and are capable of waveform generation. Figure 5-1 shows the analog output circuitry of NI 6230 devices. Isolation Barrier DAC0 AO 0 AO 1...
DAC conversion. In NI-DAQmx, software-timed generations are referred to as on-demand timing. Software-timed generations are also referred to as immediate or static operations. They are typically used for writing a single value out, such as a constant DC voltage. NI 6230 User Manual ni.com...
Analog output supports two different triggering actions: • Start trigger • Pause trigger A digital trigger can initiate these actions. NI 6230 devices support digital triggering, but do not support analog triggering. Refer to the AO Start Trigger Signal AO Pause Trigger Signal sections for more information on these triggering actions.
Programmable Clock 20 MHz Timebase Divider 100 kHz Timebase PXI_CLK10 Figure 5-3. Analog Output Timing Options NI 6230 devices feature the following AO (waveform generation) timing signals. • AO Start Trigger Signal • AO Pause Trigger Signal • AO Sample Clock Signal •...
Refer to Device Routing in MAX in the NI-DAQmx Help or the LabVIEW 8.x Help for more information. You also can specify whether the samples are paused when ao/PauseTrigger is at a logic high or low level. NI 6230 User Manual ni.com...
If you want to use an external sample clock signal, but do not need to divide the signal, then you should use ao/SampleClock rather than ao/SampleClockTimebase. NI 6230 User Manual 5-10 ni.com...
Export a timing output signal to a line as a PFI pin The voltage input and output levels and the current drive level of the DI and DO lines are listed in the NI 6230 Specifications. Refer to Chapter 8, PFI, for more information on PFI inputs and outputs.
TTL signals and sensing external device states, such as the state of the switch shown in the figure. Digital output applications include sending TTL signals and driving external devices, such as the LED shown in the figure. NI 6230 User Manual ni.com...
Figure 6-1. Digital I/O Connections Caution Exceeding the maximum input voltage or maximum working voltage ratings, which are listed in the NI 6230 Specifications, can damage the DAQ device and the computer. NI is not liable for any damage resulting from such signal connections.
Counters NI 6230 devices have two general-purpose 32-bit counter/timers and one frequency generator, as shown in Figure 7-1. The general-purpose counter/timers can be used for many measurement and pulse generation applications. Input Selection Muxes Counter 0 Counter 0 Source (Counter 0 Timebase)
You can route the pause trigger to the Gate input of the counter. You can configure the counter to pause counting when the pause trigger is high or when it is low. Figure 7-3 shows an example of on-demand edge counting with a pause trigger. NI 6230 User Manual ni.com...
Always count up • Always count down • Count up when the Counter n B input is high; count down when it is For information on connecting counter signals, refer to the Default Counter Terminals section. NI 6230 User Manual ni.com...
(or falling) edges occurring on the Source input between the two active edges of the Gate signal. You can calculate the period of the Gate input by multiplying the period of the Source signal by the number of edges returned by the counter. NI 6230 User Manual ni.com...
You can calculate the semi-period of the Gate input by multiplying the period of the Source signal by the number of edges returned by the counter. Single Semi-Period Measurement Single semi-period measurement is equivalent to single pulse-width measurement. NI 6230 User Manual ni.com...
Recall that the first period measurement in the buffer should be discarded. Average the remaining K period measurements to determine the average period of F1. The frequency of F1 is the inverse of the average period. Figure 7-12 illustrates this method. NI 6230 User Manual 7-10 ni.com...
You can route the signal to measure to the Source input of Counter 0, as shown in Figure 7-14. Assume this signal to measure has frequency F1. Configure Counter 0 to generate a single pulse that is the width of N periods of the source input signal. NI 6230 User Manual 7-12 ni.com...
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(if you cannot provide an external signal of known width). An advantage of Method 2 is that the measurement completes in a known amount of time. • Method 3 measures high and low frequency signals accurately. However, it requires two counters. NI 6230 User Manual 7-14 ni.com...
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Some quadrature encoders have a third channel, channel Z, which is also referred to as the index channel. A high level on channel Z causes the counter to be reloaded with a specified value in a specified phase of the NI 6230 User Manual 7-16 ni.com...
The counter then stores the count in a hardware save register and ignores other edges on its inputs. Software then can read the stored count. Figure 7-20 shows an example of a single two-signal edge-separation measurement. NI 6230 User Manual 7-18 ni.com...
After the Start Trigger signal pulses once, the counter ignores the Gate input. Figure 7-23 shows a generation of a pulse with a pulse delay of four and a pulse width of three (using the rising edge of Source). NI 6230 User Manual 7-20 ni.com...
Counter n Internal Output signal is equal to the frequency of the Source input divided by M + N. For information on connecting counter signals, refer to the Default Counter Terminals section. NI 6230 User Manual 7-22 ni.com...
Gate edge is in progress. The waveform thus produced at the counter’s output can be used to provide timing for undersampling applications where a digitizing system can sample repetitive waveforms that are higher in frequency than the Nyquist NI 6230 User Manual 7-24 ni.com...
Some of these options may not be available in some driver software. Routing Counter n Source to an Output Terminal You can route Counter n Source out to any output PFI <6..9> or RTSI <0..7> terminal. All PFIs are set to high-impedance at startup. NI 6230 User Manual 7-26 ni.com...
To begin any counter input or output function, you must first enable, or arm, the counter. In some applications, such as buffered semi-period measurement, the counter begins counting when it is armed. In other applications, such as single pulse-width measurement, the counter begins NI 6230 User Manual 7-28 ni.com...
Counters Default Counter Terminals By default, NI-DAQmx routes the counter/timer inputs and outputs to the PFI pins, shown in Table 7-4. Table 7-4. NI 6230 Device Default NI-DAQmx Counter/Timer Pins Counter/Timer Signal Default Pin Number (Name) Port CTR 0 SRC 13 (PFI 0) P0.0...
On the first rising edge of the Gate, the current count of 7 is stored. On the next rising edge of the Gate, the counter stores a 2 since two Source pulses occurred after the previous rising edge of Gate. NI 6230 User Manual 7-34 ni.com...
The frequency of the external source is 20 MHz or less • You can have the counter value and output to change synchronously with the 80 MHz Timebase In all other cases, you should not use duplicate count prevention. NI 6230 User Manual 7-36 ni.com...
Source signal, and counts on the following rising edge of the source, as shown in Figure 7-36. Source Synchronize Delayed Source Count Figure 7-36. External Source Mode NI 6230 User Manual 7-38 ni.com...
NI 6230 devices have 10 Programmable Function Interface (PFI) signals—six input signals and four output signals. Each PFI <0..5>/P0.<0..5> can be configured as a timing input signal for AI or counter/timer functions or a static digital input. Each PFI input also has a programmable debouncing filter.
P0.x or P1.x. The voltage input and output levels and the current drive levels of the PFI signals are listed in the NI 6230 Specifications. Using PFI Terminals as Timing Input Signals Use PFI <0..5> terminals to route external timing signals to many different M Series functions.
N consecutive edges, the low to high transition is propagated to the rest of the circuit. The value of N depends on the filter setting; refer to Table 8-1. NI 6230 User Manual ni.com...
If the port powers up enabled, you also can configure each line individually to power up as 1 or 0. Refer to the NI-DAQmx Help or the LabVIEW 8.x Help for more information about setting power-up states in NI-DAQmx or MAX. NI 6230 User Manual ni.com...
All analog measurements are made relative to the isolated ground signal. The isolated ground is an input to the NI 6230 device. The user must connect this ground to the ground of system being measured or controlled.
Chapter 8, PFI, for more information. Digital Isolation The NI 6230 uses digital isolators. Unlike analog isolators, digital isolators do not introduce any analog error in the measurements taken by the device. The A/D converter, used for analog input, is on the isolated side of the device.
The following signals can be routed to drive the external reference clock. • RTSI <0..7> • PXI_CLK10 • PXI_STAR The external reference clock is an input to a Phase-Lock Loop (PLL). The PLL generates the internal timebases. NI 6230 User Manual 10-2 ni.com...
Digital Routing and Clock Generation • Share trigger signals between devices Many National Instruments DAQ, motion, vision, and CAN devices support RTSI. In a PCI system, the RTSI bus consists of the RTSI bus interface and a ribbon cable. The bus can route timing and trigger signals between several functions on as many as five DAQ, vision, motion, or CAN devices in the computer.
N consecutive edges, the low to high transition is propagated to the rest of the circuit. The value of N depends on the filter setting; refer to Table 10-2. NI 6230 User Manual 10-6 ni.com...
An M Series device receives the Star Trigger signal (PXI_STAR) from a Star Trigger controller. PXI_STAR can be used as an external source for many AI, AO, and counter signals. NI 6230 User Manual 10-8 ni.com...
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PFI, the M Series device does not use the filtered version of the input signal. Refer to the KnowledgeBase document, Digital Filtering with M Series, for more information about digital filters and counters. To access this KnowledgeBase, go to and enter the info code ni.com/info rddfms NI 6230 User Manual 10-10 ni.com...
Bus Interface The bus interface circuitry of NI 6230 devices efficiently moves data between host memory and the measurement and acquisition circuits. NI 6230 devices are available for the following platforms. • • NI 6230 devices are jumperless for complete plug-and-play operation. The operating system automatically assigns the base address, interrupt levels, and other resources.
PXI hybrid slots—Accepts PXI or PXI Express modules. PXI-1 devices use PCI signaling to communicate to the host controller (as opposed to PCI Express signaling). Peripheral devices are installed in peripheral slots and are not system controllers. NI 6230 User Manual 11-2 ni.com...
DMA is a method to transfer data between the device and computer memory without the involvement of the CPU. This method makes DMA the fastest available data transfer method. National Instruments uses DMA hardware and software technology to achieve high throughput rates and to increase system utilization.
DMA. However, NI-DAQmx allows you to disable DMA and use interrupts. To change your data transfer mechanism between DMA and interrupts in NI-DAQmx, use the Data Transfer Mechanism property node. NI 6230 User Manual 11-4 ni.com...
When you configure a trigger, you must decide how you want to produce the trigger and the action you want the trigger to cause. NI 6230 devices support internal software triggering, as well as external digital triggering. For information about the different actions triggers can perform for each sub-system of the device, refer to the following sections: •...
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You also can program your DAQ device to perform an action in response to a trigger from a digital source. The action can affect the following. • Analog input acquisition • Analog output generation • Counter behavior NI 6230 User Manual 12-2 ni.com...
NI 6230 Device Information This appendix contains device pinouts, specifications, cable and accessory choices, and other information for the NI 6230 M Series devices. To obtain documentation for devices not listed here, refer to ni.com/ manuals NI 6230 Pinout Figure A-1 shows the pinout of the NI 6230.
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PFI 7/P1.1 (Output) D GND PFI 8/P1.2 (Output) PFI 9/P1.3 (Output) NC = No Connect Figure A-1. NI 6230 Pinout Table A-1. NI 6230 Device Default NI-DAQmx Counter/Timer Pins Counter/Timer Signal Default Pin Number (Name) Port CTR 0 SRC 13 (PFI 0) P0.0...
Screw Terminal National Instruments offers several styles of screw terminal connector blocks. Use an SH37F-37M cable to connect an NI 6230 device to a connector block, such as the following: • CB-37F-HVD—37-pin DIN rail screw terminal block, UL Recognized derated to 30 Vrms, 42.4 V...
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• R37F-37M-1—37-pin female-to-male ribbon I/O cable • SH37F-P-4—37-pin female-to-pigtails shielded I/O cable Custom Cabling and Connectivity Refer to the Custom Cabling section of Chapter 2, DAQ System Overview, for more information about custom cabling solutions. NI 6230 User Manual ni.com...
Troubleshooting This section contains some common questions about M Series devices. If your questions are not answered here, refer to the National Instruments KnowledgeBase at . It contains thousands of documents that ni.com/kb answer frequently asked questions about NI products.
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1/convert period = convert rate This method allows multiple channels to be sampled relatively quickly in relationship to the overall sample rate, providing a nearly simultaneous effect with a fixed delay between channels. NI 6230 User Manual ni.com...
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Technical Support and Professional Services Visit the following sections of the National Instruments Web site at for technical support and professional services: ni.com • Support—Online technical support resources at ni.com/support include the following: – Self-Help Resources—For answers and solutions, visit the...
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You also can visit the Worldwide Offices section of to access the branch ni.com/niglobal office Web sites, which provide up-to-date contact information, support phone numbers, email addresses, and current events. NI 6230 User Manual ni.com...
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(LabVIEW), all data is collected, transferred into system memory, and analyzed for the trigger condition. When analog triggering is implemented in hardware, no data is transferred to system memory until the trigger condition has occurred. Analog output. NI 6230 User Manual ni.com...
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Plug-in products, PCMCIA cards, and devices such as the DAQPad-1200, which connects to your computer parallel port, are all examples of DAQ devices. SCXI modules are distinct from devices, with the exception of the SCXI-1200, which is a hybrid. NI 6230 User Manual ni.com...
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The condition where a common mode voltage exists, or may exist, between earth ground and the instrument or circuit of interest. Neither the high, nor the low side of a circuit is at earth potential. NI 6230 User Manual ni.com...
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1. A means for a device to notify another device that an event occurred. request line 2. A computer signal indicating that the CPU should suspend its current task to service a designated activity. Current, output high. Current, output low. See interrupt, interrupt request line. NI 6230 User Manual G-10 ni.com...
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National Instruments. NI-DAQ The driver software needed to use National Instruments DAQ devices and SCXI components. Some devices use Traditional NI-DAQ (Legacy); others use NI-DAQmx. NI 6230 User Manual G-12 ni.com...
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The time from the rising to the falling slope of a pulse (at 50% amplitude). A rugged, open system for modular instrumentation based on CompactPCI, with special mechanical, electrical, and software features. The PXIbus standard was originally developed by National Instruments in 1997, and is now managed by the PXIbus Systems Alliance. PXI Express PCI Express eXtensions for Instrumentation—The PXI implementation of...
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RTSI Real-Time System Integration. RTSI bus Real-Time System Integration bus—The National Instruments timing bus that connects DAQ devices directly, by means of connectors on top of the devices, for precise synchronization of functions. Seconds. Samples.
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Describes a device that acquires a specified number of samples from one or more channels and returns the data when the acquisition is complete. single-ended input A circuit that responds to the voltage on one input terminal and ground. See also differential input. NI 6230 User Manual G-16 ni.com...
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Universal Serial Bus—A 480 Mbit/s serial bus with up to 12-Mbps bandwidth for connecting computers to keyboards, printers, and other peripheral devices. USB 2.0 retains compatibility with the original USB specification. Volts. Common-mode voltage. Ground loop voltage. Volts, input high. NI 6230 User Manual G-18 ni.com...
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4-13 measurement, 7-19 differential for ground-referenced signal sources, 4-14 interface, 11-1 for ground-referenced signal RTSI, 10-3 sources, 4-14 for non-referenced signal sources, 4-16 single-ended considerations, 4-17 single-ended for floating signal sources, 4-18 NI 6230 User Manual ni.com...
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4-18 AO Sample Clock, 5-9 connections, NRSE configuration, 4-17 AO Sample Clock Timebase, 5-10 connections, RSE configuration, 4-17 AO Start Trigger, 5-6 connecting analog voltage input, 4-12 connecting analog voltage output, 5-5 connecting counter, B-3 NI 6230 User Manual ni.com...
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