Table Of Contents

IviDmm Configure Trigger (G Dataflow)

Last Modified: September 7, 2018

Configures the common DMM trigger properties. These properties are the trigger source and trigger delay

connector_pane_image
datatype_icon

instrument handle

The instrument handle that you obtain from the IviDmm Initialize Node. The handle identifies a particular instrument session.

Default: None

datatype_icon

error in

Error conditions that occur before this node runs.

The node responds to this input according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Default: No error

datatype_icon

trigger source

Value that specifies the trigger source you want to use. . The driver sets the IviDmm>Trigger>Trigger Source property to this value. After you call the Read or Initiate Node, the DMM waits for the trigger you specify in this parameter. After it receives the trigger, the DMM waits the length of time you specify in the Trigger Delay parameter. The DMM then takes a measurement. Valid Values:

IVIDMM_VAL_IMMEDIATE Immediate: The DMM does not wait for a trigger of any kind.
IVIDMM_VAL_EXTERNAL External: The DMM waits for a trigger on the external trigger input.
IVIDMM_VAL_SOFTWARE_TRIG Software Trigger Function: The DMM waits until you call the Send Software Trigger [SWT] Node.
IVIDMM_VAL_TTL0 PXI TRIG0 or VXI TTL0
IVIDMM_VAL_TTL1 PXI TRIG1 or VXI TTL1
IVIDMM_VAL_TTL2 PXI TRIG2 or VXI TTL2
IVIDMM_VAL_TTL3 PXI TRIG3 or VXI TTL3
IVIDMM_VAL_TTL4 PXI TRIG4 or VXI TTL4
IVIDMM_VAL_TTL5 PXI TRIG5 or VXI TTL5
IVIDMM_VAL_TTL6 PXI TRIG6 or VXI TTL6
IVIDMM_VAL_TTL7 PXI TRIG7 or VXI TTL7
IVIDMM_VAL_ECL0 VXI ECL0
IVIDMM_VAL_ECL1 VXI ECL1
IVIDMM_VAL_PXI_STAR PXI Star
IVIDMM_VAL_RTSI_0 RTSI line 0
IVIDMM_VAL_RTSI_1 RTSI line 1
IVIDMM_VAL_RTSI_2 RTSI line 2
IVIDMM_VAL_RTSI_3 RTSI line 3
IVIDMM_VAL_RTSI_4 RTSI line 4
IVIDMM_VAL_RTSI_5 RTSI line 5
IVIDMM_VAL_RTSI_6 RTSI line 6

Default: IVIDMM_VAL_IMMEDIATE

datatype_icon

trigger delay

Value you pass to use for the trigger delay. Express this value in seconds. The driver sets the IviDmm>>Basic Operation>>Trigger Delay property to this value. The trigger delay specifies the length of time the DMM waits after it receives the trigger and before it takes a measurement. Use positive values to set the trigger delay in seconds. The driver reserves negative values for configuring the DMM to calculate the trigger delay automatically.

spd-note-note
Note  

Setting this parameter to IVIDMM_VAL_AUTO_DELAY_ON (-1.0) configures the DMM to calculate the trigger delay before each measurement.

spd-note-note
Note  

Setting this parameter to IVIDMM_VAL_AUTO_DELAY_OFF (-2.0) stops the DMM from calculating the trigger delay and sets the trigger delay to the last automatically calculated value.

Default: 0.0 (seconds)

datatype_icon

instrument handle out

The instrument handle that you obtain from the IviDmm Initialize Node. The handle identifies a particular instrument session.

Default: None

datatype_icon

error out

Error information.

The node produces this output according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

Web Server: Not supported in VIs that run in a web application


Recently Viewed Topics