TECHNICAL NOTE – OPERATION OF MT4000 TWTA
10/24/03
TN4000-3
MCL, INC.
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3.2.8 Event Log Screen
This screen is accessed from the menu screen. When the screen shown below is displayed the
most recent event in the log will be presented.
The event log is stored in Non-Volatile memory on the HPA and will contain operational state
changes, alarms, and faults, which have occurred in the HPA. The event log will contain the
event name with a date and time stamp for when the event occurred. Events that can be stored in
the log are listed in the following table. If one of the user adjustable trip levels are exceeded
causing an event entry, the level that was exceeded will also be stored in the log and presented on
the fourth line of the display.
The time resolution of the log will be to the nearest second (
±
1 second). The event log is able to
store 200 events. If the log size exceeds the available memory size the oldest events will scroll
out of the log. The log is purged only through a diagnostic interface command. The event log can
be downloaded through the diagnostic interface.
The operator can use the adjustment knob to scroll through the events in time sequence one at a
time. By rotating the knob CW these selections will scroll backwards in time, and CCW forward
in time. If the operator were to press the menu select button from this screen the menu screen.
