That is good to hear about the wireless. How close to completely shut down can the tablet be while still looking for wireless?

I'm still interested in how close to shut down the device can be and still run cron jobs - if someone could test this for me, or perhaps explain what the different power modes of the device are, I'd appreciate it. Just for explanation, I am curious how close to "completely off" the device can be and still run a task of my choosing every 15 minutes.