Comtech EF Data SDM-100A - Manual (Page 69)

SDM-100A Satellite Modem Operation
Rev. 0 3–35
3.2.1.4 Stored Faults/Alarms
The modem stores the first 10 (Flt0 through Flt9) occurrences of fault status changes in
each of the seven major fault categories. Each fault status change is stored with the time
and date of the occurrence. Stored faults may be viewed by entering the “Stored Faults”
level from the “FUNCTION SELECT” menu.
All stored faults may be cleared by executing the “CLEAR Stored Faults?” command
from the “Stored Faults” level.
Stored faults are not maintained through a controller power-on reset cycle. However, the
last known time is maintained in non-volatile RAM, and upon power-down, a common
equipment fault is logged (Flt0) with that time and date. On power-up, an additional
common equipment fault is also logged (Flt1) to indicate the power-up time and date. On
power-up, the power-down and power-up times are logged as common equipment fault 0
and common equipment fault 1.
Upon entering the “Stored Faults” level, press [
← ] or [ → ] to move between the fault
groups and the “CLEAR Stored 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 [
↑ ] or [ ↓ ] to cycle 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]. At this time, press [
← ] or [ → ] to move the flashing cursor to the fault to be
identified.
To clear the stored faults currently logged, simply 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.
An Unavailable Seconds Fault will occur if the Reed-Solomon code could not correct bit
errors in one block of serialized data in any given second. (Reed-Solomon only.)