Configures the device to wait for a digital edge trigger and then marks a reference point within the record.

On a MIMO session, this VI configures the digital edge trigger on the master port. By default, the Selected Ports property is configured to "segment0/chain0" and is considered as the master port.

Spectral measurements are sometimes implemented with multiple acquisitions and therefore will require that digital triggers are sent for each acquisition. Multiple factors, including the desired span versus the realtime bandwidth of the hardware, affect the number of acquisitions. RFmx recommends repeating the generation until the measurement is completed in order to ensure that all the acquisitions are triggered.


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Inputs/Outputs

  • cbool.png Enable Trigger? —

    Enable Trigger? specifies whether to enable the trigger. The default value is TRUE.

  • cstr.png Selector String —

    Selector String specifies a selector string comprising of the signal name. If you do not specify the signal name, the default signal instance is used. The default value is "" (empty string).

    Example:

    ""

    "signal::sig1"

    You can use the RFmxWLAN Build Signal String VI to build the selector string.

  • cgenclassrntag.png Instrument Handle In —

    Instrument Handle In specifies the RFmx session refnum. Instrument Handle In is obtained from the RFmxInstr Initialize NIRFSA VI or the RFmxInstr Initialize NIRFSA (Array) VI.

  • cstr.png Digital Edge Source —

    Digital Edge Source specifies the source terminal for the digital edge trigger. This parameter is used only when you set the Trigger Type property to Digital Edge. The default value of this property is hardware dependent.

    To make a specific MIMO port as the trigger master, you must use the port specifier format "port::<device_name>/<source_terminal>".

    Example:

    "port::myrfsa1/PFI0"

    PFI0 (PFI0)

    The trigger is received on PFI 0.
    PFI1 (PFI1)

    The trigger is received on PFI 1.
    PXI_Trig0 (PXI_Trig0)

    The trigger is received on PXI trigger line 0.
    PXI_Trig1 (PXI_Trig1)

    The trigger is received on PXI trigger line 1.
    PXI_Trig2 (PXI_Trig2)

    The trigger is received on PXI trigger line 2.
    PXI_Trig3 (PXI_Trig3)

    The trigger is received on PXI trigger line 3.
    PXI_Trig4 (PXI_Trig4)

    The trigger is received on PXI trigger line 4.
    PXI_Trig5 (PXI_Trig5)

    The trigger is received on PXI trigger line 5.
    PXI_Trig6 (PXI_Trig6)

    The trigger is received on PXI trigger line 6.
    PXI_Trig7 (PXI_Trig7)

    The trigger is received on PXI trigger line 7.
    PXI_STAR (PXI_STAR)

    The trigger is received on the PXI star trigger line.
    PXIe_DStarB (PXIe_DStarB)

    The trigger is received on the PXIe DStar B trigger line.

    TimerEvent (TimerEvent)

    The trigger is received from the timer event.

  • ci32.png Digital Edge —

    Digital Edge specifies the active edge for the trigger. This parameter is used only when you set the Trigger Type property to Digital Edge. The default value is Rising Edge.

    Rising Edge (0)

    The trigger asserts on the rising edge of the signal.
    Falling Edge (1)

    The trigger asserts on the falling edge of the signal.
  • cdbl.png Trigger Delay (s) —

    Trigger Delay specifies the trigger delay time. This value is expressed in seconds. The default value is 0. If the delay is negative, the measurement acquires pretrigger samples. If the delay is positive, the measurement acquires posttrigger samples.

  • cerrcodeclst.png error in (no error) —

    error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

  • igenclassrntag.png Instrument Handle Out —

    Instrument Handle Out passes a reference of your RFmx session to the next VI.

  • ierrcodeclst.png error out —

    error out contains error information. This output provides standard error out functionality.