'找不到有效的兼容AVD或设备

我是Eclipse ADT的新手,我试图在我的平板电脑上运行一个应用程序(三星Galaxy Note 10.1),但是出现如下错误:

[2013-12-26 12:37:41 - SDK_Example] ------------------------------

[2013-12-26 12:37:41 - SDK_Example] Android Launch!

[2013-12-26 12:37:41 - SDK_Example] adb is running normally.

[2013-12-26 12:37:41 - SDK_Example] Performing com.metaio.Example.MainActivity activity launch

[2013-12-26 12:37:41 - SDK_Example] No active compatible AVD's or devices found. Relaunch this configuration after connecting a device or starting an AVD.

谁能告诉我为什么找不到我的设备？