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If you attach an IEPE accelerometer or microphone to an AI channel that requires excitation from a device such as a DSA device, NI 9230, NI 9231, NI 9232, NI 9234 or an NI 9250Devices are listed as examples ...

Connect strain gages in a variation on a generic Wheatstone bridge configuration. These configurations vary based on the placement of strain gages within the bridge; their location and orientation on the ...

Digital I/O module capabilities depend on the type of digital signals that the module can measure or generate and the chassis the module is used in. Serial digital I/O modules: NI 9375, NI 9403, NI 9425, ...

Bridge-based sensors require a constant voltage to power the bridge. Bridge signal conditioners typically include a voltage source. While there is no standard voltage level that is recognized industry ...

Sensors for measuring force, pressure, and torque, such as a load cell, are often based on a Wheatstone bridge. These sensors typically use a full-bridge configuration with a 350 Ω nominal bridge resistance. ...

A thermistor is a piece of semiconductor made from metal oxides, pressed into a small bead, disk, wafer, or other shape, heated at high temperatures, and coated with epoxy or glass. Like RTDs, by passing ...

On a DSA device, you can either acquire a signal present on the I/O connector, or you can acquire a signal that is generated from the internal calibration multiplexer. The channels available on this multiplexer ...

Signal conditioning systems can generate excitation for some transducers. Strain gages and RTDs require external voltage and current, respectively, to excite their circuitry into measuring physical phenomena. ...

A two pulse encoder is a position measurement sensor that has two channels, A and B. When the encoder is moved, either signal A or signal B on the encoder pulses. A pulse on signal A represents a movement ...

On an NI 4300 or NI 433x device, you can either acquire a signal present on the I/O connector, or you can acquire an onboard signal, via an internal multiplexer. The channels available on this multiplexer ...

Encoders typically use a third signal for Z indexing, which produces a pulse at fixed positions that you can use for precise determination of a reference position. For instance, if the Z index is 45° for ...

Devices that emulate the 8255 protocol support two handshaking signals: Handshake Trigger Also called Strobe Input (STB) and Acknowledge Input (ACK) Handshake Event Also called Input Buffer Full (IBF) ...

For analog edge triggering, you configure the measurement device to look for a certain signal level and slope (either rising or falling). After the device identifies the trigger condition, the device performs ...

Master Timebase synchronization is the most flexible and powerful synchronization method available on supported devices. It allows you to synchronize all timing for the synchronized devices, even at different ...

When you configure an Arm Start Trigger, a counter task does not respond to any Start Triggers until after the Arm Start Trigger occurs. You can configure this trigger to occur on a digital edge or at ...

For some applications, the other synchronization methods might not be sufficient. In such cases, you might be able to synchronize by using a clock from one device as a different clock on another device. ...

Input Tasks If your acquisition is finite (sample mode on the Timing function/VI set to Finite Samples), NI-DAQmx allocates a buffer equal in size to the value of the samples per channel attribute/property. ...

You can specify the size of the buffer by calling the DAQmx Configure Buffer function/VI, by specifying the buffer size attribute/property in the buffer property node, or by writing a number of pulse specifications ...

Sample Clock Timebase synchronization allows you to synchronize devices at different rates. Use Sample Clock Timebase synchronization to synchronize a combination of devices for which Reference Clock, ...

For synchronizing multiple tasks on a single device, even at different rates and on different subsystems, you do not need to synchronize any clocks. Because the device derives those clocks from the same ...

When sharing a trigger across multiple devices, the master device must respond to and export the trigger, and the trigger signal must travel from the master device to slave devices. This results in skew ...

Task-based routing is the most common form of routing. When you create a hardware trigger or export a hardware signal, you create a task-based route. These routes are embedded in a task. You can use Export ...

Some state transitions require the task to move through one or more states to reach the specified state. For example, if the task is in the Unverified state, and you call the Control Task function/VI, ...

NI-DAQmx tasks using NI-DAQmx simulated devices are verified just as tasks are on physical devices. If a property is set to an invalid value, the error returned for an NI-DAQmx simulated device is identical ...

Requirement The I/O needs to be hardware-timed. All output values need to simultaneously update at the arrival of the sample clock edge. Data needs to be exchanged between a time-critical loop and lower-priority ...

Specifies in seconds the minimum pulse width the filter recognizes. Not supported Not supported in VIs that run in a web application 2F07 attr2F07.html

Specifies the terminal to which signal A is connected. Not supported Not supported in VIs that run in a web application 219D attr219D.html

Specifies whether to apply the pulse width filter to the signal. Not supported Not supported in VIs that run in a web application 2200 attr2200.html

Specifies in seconds the minimum pulse width the filter recognizes. Not supported Not supported in VIs that run in a web application 2201 attr2201.html

Specifies in hertz the rate of the pulse width filter timebase. NI-DAQmx uses this value to compute settings for the filter. Not supported Not supported in VIs that run in a web application 2203 attr2203.html ...

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