When to use Initiate and when Start Trigger?

[HaD]

Hello I am talking about Scope5122 and DigitalIO6552.

Im little confuse, what is the relation between Initiate VI to Start Trigger trigger.

Thanks.

[nitad54448]

hi,

i don t know what these instruments are, but in my case, working with DMMs, Initiate is preparing the instrument to perform a measurement  (put the instrument in a "wait for trigger" state) and trigger is  to start the action. 

N

[Aaron_W.]

HaD,

Basically, the Initialize VI just gives you a session reference to the device where you can modify properties of the device and configure the device (sample rate, number of sample to acquire, channels to use, etc.). These properties all have to be configured before the device begins to acquire or generate. (Note: some properties can be modified or accessed after the device is acquiring or generating, but not all)  The Initiate VI will basically start the acquisition or generation to the device if some sort of trigger is not already configured. The Start Trigger VI allows you to configure a trigger for the device, if you do configure a trigger you will still have to call the Initiate VI, but only once you call this Initiate VI will it begin to wait for a trigger. If you do not configure a trigger the acquisition / generation would begin as soon as the Initiate VI was called. Hope this helps.