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SLM-3650 Satellite Modem
Operation
3.4.11
Function Select: Stored Faults/Alarms
Refer to Figure 3-14.
The modem stores the first 10 (Flt0 through Flt9) occurrences of fault status changes in
each of the following major fault categories:
•
Modulator
•
Demodulator
•
TX Interface
•
RX Interface
•
Common Equipment
•
Backward Alarms (IDR option only)
Each fault status change is stored with the time and date of the occurrence of the fault.
Stored faults may be viewed by entering the stored faults level from the Select menu.
Refer to Faults and Alarms menus for fault explanations. UNAVAL SECONDS fault
information appears in Section 3.4.11.1.
Stored faults are not maintained through controller power-on reset cycle. However, the
last known time is maintained in non-volatile Random Access Memory (RAM). On
power-up, a common equipment fault is logged (Flt0) with that last known time and date.
Also on power-up, an additional common equipment fault is logged (Flt1) to indicate the
power-up time and date. The power-down and power-up times are logged as common
equipment fault 0 and common equipment fault 1, respectively. On entering the stored
faults level, press [
Faults?" selections. The time and date of the first stored fault status (Flt0) for the selected
group will be displayed alternately on Line 2 of the display. Press [
through the selected group's stored fault status (Flt0 through Flt9). To display the fault
status associated with the displayed time and date, press [ENTER]. To identify the fault,
press [
] or [
←
press [ENTER] when the "Clear Stored Faults/Yes?" selection is displayed.
Note: Faults are stored in time sequence, with the oldest fault status change stored in
Flt0, and the most recent in Flt9. Only the first 10 fault status changes are stored. All
stored faults which have not been used indicate "No Fault" on the display.
3.4.11.1
Function Select: Stored Faults/Alarms:
Unavailable Seconds Fault
UNAVAL SECONDS x
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] or [
] to move between the fault groups and the "Clear Stored
←
→
] to move the flashing cursor. To clear the currently logged stored faults,
→
A fault is indicated if the Reed-Solomon Codec could not correct bit errors in
one block of serialized data in any given second.
Note: This is available only with the Reed-Solomon option.
3–47
Revision 3
MN/SLM3650.IOM
] or [
] to cycle
↑
↓
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