1. On/off 10. System functions
2. USB interface 11. Numeric keypad
3. Protocol interface 12. Direction keys
4. CH1 output/sync 13. Multi-function knob/key
5. CH1 control 14. Menu
6. Sync setting 15. Waveform quick select
7. CH2 control 16. Page up/down
8. CH2 ouput/sync 17. Soft function keys
9. Manual trigger 18. 8 inch TFT LCD screen