== P2.2 Instrument operability and functioning == • **Phase** : 2 • **Status** : Draft • **Category** : Daytime testing (functionality and operability) (C3) • **Recurrence** : after instrument installation at telescope platform • **Duration** : 2 days **Description** • The functionality and operability of individual components/subsystems are tested. This is followed by the checking of the internal alignment of the instrument using the light source within. The final step is the performance of the system. **Prerequisites** • All electronics and services up and running. **Procedure** • Initialize all the motors/sub-systems. • Check the functionality of all the motors (home position, named/nominal positions, and reaching software limits). • Check the working of all the light sources. • Using the on-axis diffraction-limited light source, check the internal alignment of the SHARK-NIR. * Check of on-axis optical quality using phase diversity and of the relative positions of the coronagraphic masks. **Success criteria** • Motors and light sources working as they should. • The internal alignment is preserved. • Performance of the system is acceptable. **Notes** **LBTO support** **Associated SHARK-NIR personnel** **Date performed and by whom** **Comments**