Chapter 3. Operation3-12 TSU User Manual 61200060L1-1CURR ERR/ALM Submenu of 1)StatusThe Current Error/Alarm menu is used for viewing currentlyActive/Inactive errors and alarms.1. With the cursor on main menu item 1)S TATUS, pressENTER. The first of three Status submenu items with thecursor on 1)NI PERF RPTS displays.2. Press the down scroll key.3. Press ENTER.The results display the first current ERRORS /A LARMS screen.The up and down scroll keys are used to access the completedisplay of the errors/alarms that are currently active. Thealarms and errors which can be seen are shown below.L O S S O F S I G N A LA C T I V EAlarm InvestigatedState (Active/Inactive)Loss of Signal No pulses received at NI.AIS Alarm Unframed All-Ones received at NI.Out of Frame No framing pattern sync at NIYellow Alarm Receiving yellow alarm pattern fromNI.Red Alarm LOS/OOF causing red alarm at NI.Code Violations CRC errors in ESF, or BPVs in SF werereceived at NI.Bipolar Violations BPVs in SF or ESF.Frame Bit Errors Frame Bits received incorrectly at NI.PLL Alarm Unable to sync up to selected clocksource.
