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The selection of whether the primary or external trigger is used occurs in the Main Controls window:
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When the EXT toggle button is depressed (as shown here), all ScanImage boards await their trigger on the external trigger input terminal during GRAB/LOOP acquisitions (but not FOCUS acquisitions).
Otherwise, all boards await their trigger on the trigger input terminal (which is generally connected to the trigger line output generated by ScanImage). | Wiki Markup |
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{center}[!ScanImage Pics^r3_5_MainControls_externalLoop.png|height=200!|ScanImage Pics^r3_5_MainControls_externalLoop.png]{center}
When the *EXT* toggle button is depressed (as shown here), all ScanImage boards await their trigger on the _external trigger input terminal_ during GRAB/LOOP acquisitions (but not FOCUS acquisitions).
Otherwise, all boards await their trigger on the _trigger input terminal_ (which is generally connected to the trigger line output generated by ScanImage).
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| title | INI File _Rig Configuration_ Changes |
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New VariablesexternalTriggerInputTerminal: Specifies the single Programmable Function Interface (PFI) terminal which the acquisition, mirror, and Pockels Cell board(s) can all use as their optional external trigger input, which can be enabled from the Main Controls window. externalTriggerTimeout: Specifies time to wait for external trigger input to arrive. When value is Inf (default), ScanImage will wait indedfinitely for the external trigger signal to arrive following a GRAB/LOOP start. | Wiki Markup |
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{center}{link-window:ScanImage Files^r3_5_standardINI_rigConfig.txt|target="_blank"}View _Rig Configuration_ Section of Model INI File{link-window}{center}
h5. New Variables
*externalTriggerInputTerminal*: Specifies the single _Programmable Function Interface (PFI) terminal_ which the acquisition, mirror, and Pockels Cell board(s) can all use as their optional external trigger input, which can be enabled from the *Main Controls* window.
*externalTriggerTimeout*: Specifies time to wait for external trigger input to arrive. When value is _Inf_ (default), ScanImage will wait indedfinitely for the external trigger signal to arrive following a GRAB/LOOP start.
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