There is not much needed to set up an NDI signal as input into Aximmetry. As soon as there is an NDI signal on the network, to which the PC running Aximmetry is connected to, Aximmetry will recognize it.
but i can't see my ndi signals in the device, Thanks a lot for your advice！
i just come across to axi, started it as Unlimited trial.
Is this the reason i can't see ndi option, must buy first?
You should look at what each version has and has not.
https://aximmetry.com/products
Ndi is available only in pro and broadcast versions. Studio and community do not have NDI
Do you have a professional license?