== P1.7	Motor/light sources functional verification and filter artifacts/defects verification == 

- **Phase**		:	1  
- **Status**		: 	Draft	 
- **Category**	: 	Unpack, Assemble, and Verification (C1)
- **Recurrence**	: 	once
- **Duration**	: 	1.5 days

**Description**
- Checking the working of motors and light sources within SHARK-NIR using optical feedback. Finding the filter defects/artefacts using an internal calibration source (flat-field) within the instrument.

**Prerequisites**
- SHARK-NIR connected to LBT network.
- Electronics racks on.
- DM best shape uploaded (shape minimizing internal aberrations)
- The cryostat should be running and cooled down.

**Procedure**
- When the services are up and running, after the motors are sent to home positions, each of the individual motors is individually tested for their different named/nominal positions. 
- The light sources within SHARK-NIR are used simultaneously to check the working of the motors looking at the optical feedback.
- Check the CRED-2 and ALPAO-DM SW using optical feedback.
- Take the images of all the filters using the internal calibration source (flat-field) within the instrument to locate/find out the filter defects/artefacts, if any. You may take short- and long-exposures to get better contrast of the features if required.
- Check the filter wheel position monitoring script detailed in [wiki:/docs/Commissioning/SNM1 SNM1]. Save the data in the repository.

**Templates**
- SHARKNIR_ci_mon_LyotMaskPos (not released)
- SHARKNIR_di_mon_MaskRepeatability (not released)

**Success criteria**
- All the motors can reach the named positions / nominal positions.
- All the light sources are working and confirmed through optical feedback at the SCICAM.
- Filter wheel position monitoring script is run successfully and data is saved in the repository.
- CRED-2 AND ALPAO-DM working normally.
- All the filter images are saved.

**Notes**

**LBTO support**
- Liquid Nitrogen refill is required in the cleanroom.

**Date performed and by whom**