Inventory update after accepting a device

Hi,

When will a client send his first inventory update after installation?
I thought that after successful authorization it should, however looking at the client logs I see it checks for an update but does not send an inventory.
Will he send it only after InventoryPollIntervalSeconds?

According to documentation, the client send an inventory update:

the client may occasionally post its inventory more often if there has been recent activity on the device

Thanks,
Neta