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The following table lists the revised names for analog input terminal names. Original Terminal Names Revised Terminal Names Explanation AIGND, ACHGND AIGND The reference point for referenced single-ended ...

The full-bridge type I configuration only measures the bending strain. The following figure shows how to position strain gage resistors in a bending configuration for the full-bridge type I. Full-bridge ...

The full-bridge type II configuration only measures bending strain. The following figure shows how to position strain gage elements in a bending configuration for the full-bridge type II. Full-bridge type ...

The following figure shows how to position strain gage resistors in an axial configuration for the full-bridge type III. The full-bridge type III configuration only measures the axial configuration. Full-bridge ...

A grounded source is one in which the voltage signals are referenced to a system ground, such as earth or building ground, as shown in the following figure. Because such sources use the system ground, ...

The following figure shows how to position strain gage resistors in an axial configuration for the half-bridge type I. The following figure shows how to position strain gage resistors in a bending configuration ...

The half-bridge type II configuration only measures bending strain. The following figure shows how to position strain gage resistors in a bending configuration for the half-bridge type II. Half-bridge ...

Integrated Electronics Piezoelectric (IEPE) is a type of transducer that is packaged with a built-in amplifier. Because the charge produced by some sensors is very small, the electrical signal produced ...

S Series and X Series simultaneous sampling devices use simultaneous sampling. M Series, E Series, all other X Series devices use multiplexed sampling. C Series devices in an NI CompactDAQ chassis use ...

If you have multiple devices that support the 802.11as standard, you can use Start Trigger synchronization to trigger at a specific time. These devices must either be connected through a daisy chain or ...

For devices that support burst handshake timing, three signals are used: Pause Trigger (formerly called REQ) Ready for Transfer Event (formerly called ACK) sample clock For digital input tasks, when the ...

Many applications that require a real-time operating system are cyclic, such as a control application. The time between the start and finish of each cycle, T, is called the loop cycle time (or sample period). ...

You can configure a variety of triggers with pulse generations. All pulse generations support Start Triggers. Single pulse generation and finite pulse train generation also support the Retriggerable attribute/property, ...

December 2015 Measurement Fundamentals covers API-independent information that might help you as you develop applications. Topics include an explanation of different signal types and sensors commonly used ...

A microphone is a transducer that converts acoustical waves into electrical signals. The most common instrumentation microphone, a condenser microphone, uses a capacitive sensing element. A condenser microphone ...

The cDAQ-9132, 9133, 9134, 9135, 9136, 9137, 9138, 9139, 9174, 9178, 9179, 9184, 9185, 9188, 9188XT, and 9189 chassis provide three timing engines for analog input. Multiple timing engines allow those ...

On devices with built-in cold-junction compensation (CJC) channels, the CJC channel is read once per sample clock edge.

Frequencies of clocks must be evenly divisible into the frequency of their timebase. For example, the rate of the Sample Clock must be evenly divisible into the frequency of the Sample Clock Timebase. ...

Periodic digital edges measure time and are called clocks. Clocks such as a sample timebase clock and the 20 MHz timebase clock mark the passing of time or are used to align other signals in time. Clocks ...

When a value you set cannot be met exactly, NI-DAQmx sometimes adjusts—or coerces—that value to a valid one. Coercion often occurs when an attribute/property supports a set of discrete ranges. After you ...

NI-DAQmx programs some of the settings for the resources when the task is committed. These settings might be the rate of a clock or the input limits of a channel on a device, the direction of a trigger ...

When the task resources that perform the specified operation are released, the task transitions from the Committed state to the Verified state. These resources may be clocks or channels on a device, trigger ...

To configure a measurement, you specify the expected range of the input signal. Based on this range, NI-DAQmx automatically picks the internal timebase that provides the highest resolution for your measurement ...

There are four primary ways to transfer data across the PCI bus: Direct Memory Access (DMA), Interrupt Request (IRQ), Programmed I/O, and USB Bulk. Direct Memory Access (DMA) DMA is a mechanism to transfer ...

Requirement The I/O must be hardware-timed. All output values need to simultaneously update at the arrival of the sample clock edge. Solution Use the DAQmx Wait For Next Sample Clock function/VI to verify ...

Generating the same data more than once is called regeneration. You can configure NI-DAQmx to allow or disallow regeneration by setting the Regeneration Mode attribute/property. By default, NI-DAQmx allows ...

Requirement An analog input task must be hardware-timed. The output task does not need hardware synchronization with the sample clock edge. Solution Use the DAQmx real-time Report Missed Samples attribute/property, ...

To find the device routing table for your device, launch MAX and select Devices and Interfaces. Click a device to open a tabbed window in the middle pane. Click the Device Routes tab at the bottom of the ...

Requirement The I/O tasks do not support hardware-timed operations. Solution Apply software timing to your time-critical loop by using the Timed Loop in LabVIEW or asynchronous timers in LabWindows/CVI. ...

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