Ni 6024e manual

National Instruments Part Number A Impact Driver National Instruments National Instruments MID Label Maker National Instruments A National Instruments LabView. Laser Pointer National Instruments C Music Mixer National Instruments National Instruments cFP-Al National Instruments FP-Al Network Card National Instruments 3.

National Instruments NI National Instruments H Portable Generator National Instruments National Instruments PXI Printer Accessories National Instruments Refrigerator National Instruments NI Switch National Instruments National Instruments E.

Tool Storage National Instruments Toolkit. Vacuum Cleaner National Instruments A Webcam National Instruments NI For diagrams showing the signal paths of the three configurations, refer to the Analog Input Signal Overview section in Chapter 4, Signal Connections. The devices have a bipolar input range that changes with the programmed gain. You can program each channel with a unique gain of 0. With the proper gain setting, you can use the full resolution of the ADC to measure the input signal.

Table shows the input range and precision according to the gain used. Note: See Appendix A, Specifications , for absolute maximum ratings. When you enable dithering, you add approximately 0. This addition is useful for applications involving averaging to increase the resolution of your device, as in calibration or spectral analysis.

In such applications, noise modulation is decreased and differential linearity is improved by the addition of dithering. When taking DC measurements, such as when checking the device calibration, enable dithering and average about 1, points to take a single reading.

This process removes the effects of quantization and reduces measurement noise, resulting in improved resolution. For high-speed applications not involving averaging or spectral analysis, you may want to disable dithering to reduce noise. Your software enables and disables the dithering circuitry. The ADC quantization is clearly visible.

Figure b shows what happens when 50 such acquisitions are averaged together; quantization is still plainly visible. In Figure c, the sine wave is acquired with dithering on. There is a considerable amount of visible noise, but averaging about 50 such acquisitions, as shown in Figure d, eliminates both the added noise and the effects of quantization.

Dithering has the effect of forcing quantization noise to become a zero-mean random variable rather than a deterministic function of the input signal. The devices can scan multiple channels at the same maximum rate as their single-channel rate; however, pay careful attention to the settling times for each of the devices. No extra settling time is necessary between channels as long as the gain is constant and source impedances are low.

Refer to Appendix A, Specifications , for a complete listing of settling times for each of the devices. When scanning among channels at various gains, the settling times can increase. When the PGIA switches to a higher gain, the signal on the previous channel can be well outside the new, smaller range.

For instance, suppose a 4 V signal connects to channel 0 and a 1 mV signal connects to channel 1, and suppose the PGIA is programmed to apply a gain of one to channel 0 and a gain of to channel 1. In general, this extra settling time is not needed when the PGIA is switching to a lower gain. Settling times can also increase when scanning high-impedance signals due to a phenomenon called charge injection , where the analog input multiplexer injects a small amount of charge into each signal source when that source is selected.

If the impedance of the source is not low enough, the effect of the charge—a voltage error—has not decayed by the time the ADC samples the signal. Due to the previously described limitations of settling times resulting from these conditions, multiple-channel scanning is not recommended unless sampling rates are low enough or it is necessary to sample several signals as nearly simultaneously as possible.

The data is much more accurate and channel-to-channel independent if you acquire data from each channel independently for example, points from channel 0, then points from channel 1, then points from channel 2, and so on. In normal operation, a DAC output glitches whenever it is updated with a new value. The glitch energy differs from code to code and appears as distortion in the frequency spectrum. You can individually software-configure each line for either input or output.

You can program each port as an input or output port. In modes 1 and 2, the three ports are divided into two groups—group A and group B. Each group has eight data bits, plus control and status bits from Port C PC.

Modes 1 and 2 use handshaking signals from the computer to synchronize data transfers. Refer to Chapter 4, Signal Connections , for more detailed information. These connections are designed to enable the device to both control and be controlled by other devices and circuits. You can also control these timing signals by signals generated internally to the DAQ-STC, and these selections are fully software-configurable. Software can select any one of the PFI pins as the external source for a given timing signal.

It is important to note that you can use any of the PFI pins as an input by any of the timing signals and that multiple timing signals can use the same PFI simultaneously. This flexible routing. You can also individually enable each of the PFI pins to output a specific internal timing signal.

In addition, if you configure the device to use the internal timebase, you can also program the device to drive its internal timebase over the RTSI bus to another device that is programmed to receive this timebase signal.

This clock source, whether local or from the RTSI bus, is used directly by the device as the primary frequency source. The default configuration at startup is to use the internal timebase without driving the RTSI bus timebase signal. This timebase is software selectable. These bidirectional lines can drive any of eight timing signals onto the RTSI bus and can receive any of these timing signals. RTSI Bus. PXI Bus. Refer to the Timing Connections section of Chapter 4, Signal Connections , for a description of the signals shown in Figures and Caution Connections that exceed any of the maximum ratings of input or output signals on the devices can damage the device and the computer.

Maximum input ratings for each signal are given in the Protection column of Table National Instruments is not liable for any damages resulting from such signal connections. A signal description follows the figures. Table Connection of these analog input signals to your device depends on the type of input signal source and the configuration of the analog input channels you are using.

This section provides an overview of the different types of signal sources and analog input configuration modes. More specific signal connection information is provided in the Analog Input Signal Connections section. When configuring the input channels and making signal connections, you must first determine whether the signal sources are floating or ground-referenced.

A floating signal source is not connected in any way to the building ground system, but has an isolated ground-reference point.

Some examples of floating signal sources are outputs of transformers, thermocouples, battery-powered devices, optical isolators, and isolation amplifiers. An instrument or device that has an isolated output is a floating signal source. You must tie the ground reference of a floating signal to the analog input ground of your device to establish a local or onboard reference for the signal.

Otherwise, the measured input signal varies as the source floats out of the common-mode input range. A ground-referenced signal source is connected in some way to the building system ground and is, therefore, already connected to a common ground point with respect to the device, assuming that the computer is plugged into the same power system.

Non-isolated outputs of instruments and devices that plug into the building power system fall into this category. The difference in ground potential between two instruments connected to the same building power system is typically between 1 and mV, but can be much higher if power distribution circuits are not properly connected.

If a grounded signal source is improperly measured, this difference can appear as an error in the measurement. The connection instructions for grounded signal sources are designed to eliminate this ground potential difference from the measured signal. With the different configurations, you can use the PGIA in different ways. Figure shows a diagram of the PGIA of your device. Exceeding the maximum input voltage rating can damage the device and the computer. The maximum input voltage ratings are listed in the Protection column of Table AIGND is an analog input common signal that routes directly to the ground connection point on the devices.

You can use this signal for a general analog ground connection point to your device if necessary. The PGIA applies gain and common-mode voltage rejection and presents high input impedance to the analog input signals connected to your device.

Signals are routed to the positive and negative inputs of the PGIA through input multiplexers on the device. The PGIA converts two input signals to a signal that is the difference between the two input signals multiplied by the. The amplifier output voltage is referenced to the ground for the device. Reference all signals to ground either at the source device or at the device. If you have a floating source, reference the signal to ground by using the RSE input mode or the DIFF input configuration with bias resistors see the.

The following sections discuss the use of single-ended and DIFF measurements and recommendations for measuring both floating and ground-referenced signal sources. Figure summarizes the recommended input configuration for both types of signal sources.

Welcome to ManualMachine. We have sent a verification link to to complete your registration. Log In Sign Up. Forgot password? Enter your email address and check your inbox. Please check your email for further instructions. Enter a new password. National Instruments. Worldwide Technical Support and Product Information ni.

In no event shall National Instruments be liable for any damages arising out of or related to this document or the information contained in it.

This limitation of the liability of National Instruments will apply regardless of the form of action, whether in contract or tort, including negligence. Copyright Under the copyright laws, this publication may not be reproduced or transmitted in any form, electronic or mechanical, including photocopying, recording, storing in an information retrieval system, or translating, in whole or in part, without the prior written consent of National Instruments Corporation.

Contents Waveform Generation Timing Connections Contents Figures Figure Differential Input Connections for Nonreferenced Signals Timing Specifications for Mode 1 Output Transfer Timing Specifications for Mode 2 Bidirectional Transfer Contents Figure B-3 Figure B B-4 Figure B B-5 Figure B B-6 Tables Table This icon denotes a note, which alerts you to important information. This icon denotes a caution, which advises you of precautions to take to avoid injury, data loss, or a system crash.

Bold text also denotes parameter names. This font also denotes text that is a placeholder for a word or value that you must supply. This font is also used for the proper names of disk drives, paths, directories,. About This Manual programs, subprograms, subroutines, device names, functions, operations, variables, filenames and extensions, and code excerpts.

PXI is an open specification that builds off the CompactPCI specification by adding instrumentation-specific features. Chapter 1 Introduction These devices can interface to an SCXI system—the instrumentation front end for plug-in DAQ devices—so that you can acquire analog signals from thermocouples, RTDs, strain gauges, voltage sources, and current sources.

National Instruments Application Software LabVIEW features interactive graphics, a state-of-the-art user interface, and a powerful graphical programming language. Chapter 1 Introduction programming interface for building virtual instruments.

Chapter 1 Introduction For more information about these products, refer to the National Instruments catalogue or web site or call the office nearest you. Software Installation Install your software before installing your device. Unpacking Your device is shipped in an antistatic package to prevent electrostatic damage to the device.

Never touch the exposed pins of connectors. Chapter 2 Installation and Configuration Hardware Installation After installing your software, you are ready to install your hardware. Chapter 2 Installation and Configuration 4. Hardware Configuration National Instruments standard architecture for data acquisition and standard bus specifications, makes these devices completely software-configurable. Chapter 3 Hardware Overview Table One line connects to the positive input of the programmable gain instrumentation amplifier PGIA of the device, and the other connects to the negative input of the PGIA.

Input Range The devices have a bipolar input range that changes with the programmed gain. Chapter 3 Hardware Overview Dithering When you enable dithering, you add approximately 0.

Figure illustrates the effect of dithering on signal acquisition. Dither disabled; no averaging b. Dither enabled; no averaging d. Dither enabled; average of 50 acquisitions Figure Dithering Multichannel Scanning Considerations The devices can scan multiple channels at the same maximum rate as their single-channel rate; however, pay careful attention to the settling times for each of the devices. Chapter 4 Signal Connections assignments of the optional 50and pin connectors. PA7 is the MSB.

PA0 is the LSB. PB7 is the MSB. PB0 is the LSB. PC7 is the MSB. PC0 is the LSB. The fuse is self-resetting. Chapter 4 Signal Connections Table The low-to-high edge indicates when the input signal can be removed from the input or switched to another signal.

PFI signals are explained in the Timing Connections section in this chapter. Output In posttrigger data acquisition sequences, a low-to-high transition indicates the initiation of the acquisition sequence. In pretrigger applications, a low-to-high transition indicates the initiation of the pretrigger conversions.

In pretrigger applications, a low-to-high transition indicates the initiation of the posttrigger conversions. TRIG2 is not used in posttrigger applications. This signal reflects the actual source connected to the general-purpose counter 1. This signal reflects the actual gate signal connected to the general-purpose counter 1. In timed analog output sequences, a low-to-high transition indicates the initiation of the waveform generation.

This pin pulses once at the start of each analog input scan in the interval scan. A low-to-high transition indicates the start of the scan. This signal reflects the actual source connected to the general-purpose counter 0. This signal reflects the actual gate signal connected to the general-purpose counter 0. Types of Signal Sources When configuring the input channels and making signal connections, you must first determine whether the signal sources are floating or ground-referenced.

Chapter 4 Signal Connections Floating Signal Sources A floating signal source is not connected in any way to the building ground system, but has an isolated ground-reference point. Ground-Referenced Signal Sources A ground-referenced signal source is connected in some way to the building system ground and is, therefore, already connected to a common ground point with respect to the device, assuming that the computer is plugged into the same power system.

Chapter 4 Signal Connections gain setting of the amplifier. Analog Input Signal Connections The following sections discuss the use of single-ended and DIFF measurements and recommendations for measuring both floating and ground-referenced signal sources.

You can only view or download manuals with. Sign Up and get 5 for free. Upload your files to the site. You get 1 for each file you add. Get 1 for every time someone downloads your manual. Buy as many as you need. View and download manuals available only for. Register and get 5 for free. Upload manuals that we do not have and get 1 for each file. Get 1 for every download of your manual. Buy as much as you need.

Differential Connections for Nonreferenced or Floating Signal. Angle brackets containing numbers separated by an ellipsis represent a. This icon denotes a caution, which advises you of precautions to take to. Bold text denotes items that you must select or click on in the software,. Bold text also denotes. Italic text denotes variables, emphasis, a cross reference, or an introduction. This font also denotes text that is a placeholder for a word.

Monospace font denotes text or characters that you should enter from the.