Prisma SSR EyeLink

• The EyeLink Tray Mounted Camera needs to be placed before the study.
• We need to use the “fancy” first-surfaced mirror on the head coil.
  • This mirror needs extra care. It will scratch and smudge easily. It is difficult to clean.

Both of these are stored in the Prisma one scan room closet.

• 2025-08-26 - P2 mirror fell out! scuffed

Roughly

1. Connect network cables
2. Set IP (P1, no need P2)
3. calibrate with control.exe
4. clean up (remove network cable, undo IP on P1)

Also see https://wiki.mrrc.pitt.edu/doku.php?id=hardware:eyetracking:eyelink:taskpc_setup

Prisma 2s EPrime Computer IP does not need to be adjusted! But P1 does.

1. Ensure blue Ethernet coord is connected from the EyeLink Host PC to “EPrime” Task computer
2. Ensure EyeLink Host PC is turned on
3. Ensure Monitor and Keyboard working
   1. For P1: Confirm EyeLink mouse and Keyboard are accessible
   2. For P2: Ensure monitor and keyboard are switched to show the EyeLink computer (option #2)

1. Open the Manually_Set_IP.txt file on the task pc desktop (for IP address reference later)
2. Adjust Windows IP address settings
   1. Click on the control panel
   2. click View network status and task under Network and Internet section
   3. click change adapter on the left sidebar
   4. right-click on local area connection and select Properties
   5. enter the same luna creds used for login
   6. select Internet Protocol 4 from the connection items
   7. copy and paste address from the readme (both)

      100.1.1.2  -- is ip address
      100.1.1.1  -- is default gateway

   8. click OK and No (do not restart)

1. click the control program form the desktop (blue eye icon)
2. switch the projector display switch to “task computer” if not already there
3. enter an ID
4. push enter once the screen has flash to gray to display the eye camera feed on the projector
5. push the right arrow key to show the full feed instead of just the eye
6. confirm camera is in focus and thresholds are reasonable
   1. if pupil thresholding cannot be established with value above 65, the IR is likely not hitting the eye.

1. RESET THE IP ADDRESS BACK TO UPMC
   1. follow the same control panel → network properties → adapter settings as above but use

      10.48.88.???

2. remove the ethernet coord from the task computer (back to disconnected like before)
3. Gentle reminder to switch back eyetracking monitor and keyboard are switched back to show original screen (option #1)
4. save the (hopefully) amazing ET data then LogOff of Luna on EPrime