Chapter 3. Operation3-4 TSU 600 User Manual 61202076L1-1.Figure 3-1. TSU 600 Front Panel Layout1. LCD Window Displays menu items and messages in 2 lines by 16 characters.2. Cancel Stops current activity and returns to the previous menu.3. Enter Selects active menu item4. Copy Copies last data entered into the current DS0.5. Home Returns to the main menu.6. Alarm Quick access to the active alarm display menus.7. Clear Clears data/results fields8. Shift Provides access to special function keys9. Alarm (Module Status) Active when an alarm condition has been detected.10. Test (Module Status) Active when the module is in test mode.11. OK (Module Status) Operation is in normal mode with no detected errors.12. System LED Indicates status of power supplies (600e only)13. Up and Down Arrows Scroll through and activate the submenu items available in thecurrent menu. The flashing cursor indicates the active parame-ter.14. OK (CSU Status) Operation is in normal mode with no detected errors.15. Test (CSU Status) Active when the network interface is in test mode.16. Error (CSU Status) Indicates errors such as BPV, OOF, and CRC.17. Alarm (CSU Status) Active when an alarm condition has been detected on the net-work interface.TSU 6001 2 3COPY* HOME0SHIFT#7ALARM8CLEAROKALARMTEST94 5 6ENTERCANCEL1SYSTEM CSU 2 3 4 5 6OK TEST ERROR ALARM1 32 4 5 6 789 10 1112 13 141516 17