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TRIGGERS Panel

Description


Assign and configure External Trigger signals to synchronize image acquisition with experimental events.

 

To open this dialog, select the menu item from the Main Controls >> Settings Menu >> Triggers...

 

The terminals available in the External Trigger Configuration depends on the "digitalIODeviceName" variable in the Machine Data File . The following table describes what terminals are available:

Type of digitialIODeviceNameAvailable Trigger TerminalsNotes
DAQmx Device

PFI1

Usually connected to a PXIe Data Acquisition Card (e.g. NI PXIe-6356 or NI PXIe-6341).

 

These correspond to the PFI terminals on the Scan Control DAQ to use for external triggering.

PFI2
PFI3
PFI4
FPGA/RIO Device

DIO0.0

Usually connected to a National Instruments SCB-68A or other terminal block.

DIO0.1
DIO0.2
DIO0.3

 

 

External Trigger Configuration


Assign a role to an external trigger. See Acquisition Triggering for a description of each role. This is the physical terminal to which your trigger signal is attached.

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Each physical terminal can be connected to one or more trigger functions.

Configure the input terminal to expect either a rising or falling TTL transition. The edge on which the trigger signal generates the selected trigger function.

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A trigger function can be assigned to the rising edge and falling edges of a single physical terminal.

External Trigger Test Panel


Generates an "Acquisition Start" trigger signal.
Generates an "Acquisition Stop" trigger signal.
Generates a "Next File Marker" trigger signal.
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The External Trigger Test Panel buttons can only be used if External Triggering is enabled in the Main Controls Window.

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You can use the External Trigger Test Panel to test your scanimage configuration without having to actually generate external hardware test signals.

 

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