How can I create a AVD for tablet testing?

Check How to Test Your Application on Multiple Screens in fallowing link: http://developer.android.com/guide/practices/screens_support.html

its given there how can you test your app on tablet. you just have to change your avd according to extra large. remember one thing skin for tablet is available from 3.0 .

In 4.0 skin for tablet is not there. for that try 3.0 to 3.2 versions( which were made for tablets specifically. \

Android avd sucks,

I suggest, use genymotion its fast. faster then your phone

If you are looking for a skinned version of the Samsung Galaxy Tab, it is currently not available for any of the ICS API levels.

And using just the resolution to create Tablet emulator for ICS can be slightly tricky. For example, the Samsung Galaxy S II has a resolution of 720 * 1280 pixels.

To create an AVD for a tablet based on the ICS API, you should use the "WXGA800" from the drop down under the "Skin" option. I used this very option to create a tablet AVD and use it all the time.

Hope this helps.