10Chapter 2 Connections and Controls2.1 Main Unit – Front PanelThe front panel on the SE-2850 main unit has a grille for two airflow cooling fans. Please donot block or cover this grille as the unit may overheat. This grille should also be kept free ofdust. The front panel can be removed by removing the four thumbscrews. A soft brush orcloth can then be used to clean the grille before attaching it back to the unit.The power button starts and shuts down both the SE-2850 main unit and its attachedkeyboard.2.2 Main Unit – Rear Panel Overview1. Input 1 – SD / HD-SDI 13. Connect the SE-2850 keyboard here2. Input 2 – SD / HD-SDI 14. External Sync Input3. Input 3 – SD / HD-SDI 15. User Defined SDI Outputs 1~44. Input 4 – SD / HD-SDI / HDMI 16. Sync Output / Ref Loop5. Input 5 – SD / HD-SDI 17. User Defined Multi view Outputs6. Input 6 – SD / HD-SDI 18. Ethernet port for PC control & updates7. Input 7 – SD / HD-SDI 19. Tally Output connector8. Input 8 – SD / HD-SDI / HDMI 20. GPI connector9. Input 9 – SD / HD-SDI** 21. RS-422 connector (not currently used)10. Input10 – SD / HD-SDI** 22. 4pin XLR Power Input connector11. Input11 – SD / HD-SDI** 23. Grounding Terminal12. Input12 – SD / HD-SDI / HDMI** 24. 3pin XLR Audio Inputs25. 3pin XLR Audio Outputs** Please note inputs 9 to 12 are not present if you have purchased the eight channel SE-2850. Eight channel units can be upgraded to twelve inputs, please speak with your localdealer.1 2 3 45 6 7 89 10 11 1213 1415 16 17 18 19 20 21 22 232425