ETT Olfactometer 2, Руководство пользователя

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Using Triggers in ETTDirectControl
TTL IN (Externally triggered start)
ETTDirectControl allows paradigms to be triggered by external TTL pulses. Once a BNC cable with a
trigger source is connected to the device, and the ETT Olfactometer is connected to the computer,
ETTDirectControl will automatically recognize the device. Once the device is connected to the software
as shown in Figure 65, valves can be switched and sensors like external TTL trigger or respiratory
information can be activated (Figure 66). A click on the same button again will disable.
Figure 65 – The Manual Mode tab in ETTDirectControl gives an overview on valve states and other device parameters like TTL
Trigger on connected device (off in this case)
Figure 66 – The TTL Trigger and Respiratory sensor signals can be activated with a click on the respective buttons
To start a specific paradigm with an external TTL, switch the context to the Paradigm Designer tab. The
checkbox External TTL Triggered Start in the Paradigm Settings tab of the Paradigm Designer will need
to be checked (Figure 67). Save the change to the paradigm. Upon the next start of the paradigm it will
delay the paradigm start until a TTL pulse is received. The time point of that trigger will form time zero
or the origin of all log files. Externally triggered paradigms can be manually triggered via the user
interface to test behavior while a true trigger might not be available (Figure 68).