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DAQmx Export Signal (VI)

DAQmx - Data Acquisition VIs and Functions

Edition Date: January 2019

Part Number: 370469AP-01

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Owning Palette: DAQmx Export Signal VI and Functions
Installed With: NI-DAQmx

Routes a control signal to the terminal you specify. The output terminal can reside on the device that generates the control signal or on a different device. You can use this VI to share clocks and triggers among multiple tasks and devices. The routes this VI creates are task-based routes.

DAQmx Export Signal

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task/channels in is the name of the task or a list of virtual channels to which the operation applies. If you provide a list of virtual channels, NI-DAQmx creates a task automatically.

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signal is the name of the trigger, clock, or event to export.

10 MHz Reference Clock (12536)

Output of an oscillator that you can use to synchronize multiple devices.

20Mhz Timebase Clock (12486)

Output of an oscillator that is the onboard source of the Master Timebase. Other timebases are derived from this clock.

Advance Complete Event (12492)

Signal a switch product generates after it both executes the command(s) in a scan list entry and waits for the settling time to elapse.

Advance Trigger (12488)

Trigger that moves a switch to the next entry in a scan list.

AI Convert Clock (12484)

Clock that causes an analog-to-digital conversion on a multiplexed device. One conversion corresponds to a single sample from one channel.

AI Hold Complete Event (12493)

Signal a multiplexed device generates when the device latches analog input data (the ADC enters "hold" mode) and it is safe for any external switching hardware to remove the signal and replace it with the next signal. This event does not indicate the completion of the actual analog-to-digital conversion.

Change Detection Event (12511)

Signal a static DIO device generates when the device detects a rising or falling edge on any of the lines or ports you selected when you configured change detection timing.

Counter Output Event (12494)

Signal a counter generates. Each time the counter reaches terminal count, this signal toggles or pulses. This also applies to counter output tasks.

Reference Trigger (12490)

Trigger that establishes the reference point between pretrigger and posttrigger samples.

Sample Clock (12487)

Clock the device uses to time each sample.

Start Trigger (12491)

Trigger that begins a measurement or generation.

Watchdog Timer Expired Event (12512)

Signal a static DIO device generates when the watchdog timer expires.

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output terminal is the destination of the exported signal. A DAQmx terminal constant lists all terminals on installed devices. You can also specify a string containing a comma-delimited list of terminal names.

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error in describes error conditions that occur before this VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. If an error occurs while this VI or function runs, the VI or function runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.

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status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.

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code is the error or warning code. The default is 0. If status is TRUE, code is a negative error code. If status is FALSE, code is 0 or a warning code.

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source identifies where an error occurred. The source string includes the name of the VI that produced the error, what inputs are in error, and how to eliminate the error.

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task out is a reference to the task after this VI or function runs. If you wired a channel or list of channels to task/channels in, NI-DAQmx creates this task automatically.

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error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, error out describes the error status that this VI or function produces. Right-click the error out indicator on the front panel and select Explain Error from the shortcut menu for more information about the error.

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status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.

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code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.

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source identifies where and why an error occurred. The source string includes the name of the VI that produced the error, what inputs are in error, and how to eliminate the error.

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