Sync Detection in data_event

Zachj

Hello, I have a question regarding video sync detection on DX-TX's, mentioned in this archived thread.
https://proforums.harman.com/amx/discussion/comment/122654#Comment_122654

My question is, considering the switcher sends unsolicited video status queries, will the command in the data_event continuously execute every time a query made or will it only execute when the status changes? For instance if I have the following code:
data_event[dvTx]
{
command:
{
if(find_string(data.text, 'VALID SIGNAL', 1))
doSomething();
}
}

will 'doSomething()' continously execute while a valid signal is present or just when it changes from "NO SIGNAL' to 'VALID SIGNAL'?
Unfortunately I do not have a switcher present to test this at the moment. Thank you

richardherman

The event will only trigger when the signal state changes. I've used this with the DVX devices. IIRC there are 3 states: NO SIGNAL, UNKNOWN SIGNAL, or VALID SIGNAL. Depending on what you want, do not ommit the 'UNKNOWN SIGNAL', I used to get that with strange resolutions or while connecting/disconnecting.

The event can trigger quite a few times in a short time, for instance while the device is adjusting to the incoming signal, but nothing to worry about.

Zachj

That makes its easy for me, thank you!