After you spin up the gyro on the ground, you will ned to cage it with the knob! To set it level!
Depending on the gyro system, if you cage it in a turn, it will show a wrong indication when you level out!
You can have different warning flags, but an off flag (orange) could show in top right hand corner!
Some attitude indicators spin at aprox, 18000 to 22000 Rpm, hence it will take a little while for it to slow down! But the flag will show right away!
http://www.faa.gov/library/manuals/a...ying_handbook/