Comtech EF Data SDM-650B - Manual (Page 291)

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit
Rev. 5 F–33
F.5.2.4 Select Stored Faults (StFaults)
Refer to Table F-10.
The modem stores the first 10 (Flt0 to Flt9) occurrences of fault status changes in each of
the six major fault categories. Each stored fault status change is stored with the time and
date of the occurrence. Stored faults may be viewed by entering the StFaults level from
the Select menu. All stored faults may be cleared by executing the “CLEAR ?? StFaults”
command from the StFaults level.
Stored faults are not maintained through a controller power-on reset cycle. However, the
last known time is maintained in non-volatile RAM. Upon power-up, a common
equipment fault is logged (Flt0) with that time and date. Also upon 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, respectively.
Upon entering the StFaults level, use
[ ← ] and [ → ] to move between the six fault groups
and the “CLEAR ?? StFaults” 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. Use
[ ↑ ]
and [ ↓ ] to cycle through the selected group’s stored fault status (Flt0 to Flt9). Press
[ENTER] to display the fault status associated with the displayed time and date. At this
time, use
[ ← ] and [ → ] to move the flashing cursor to the fault to be identified.
To clear the stored faults currently logged, press [ENTER] when the “CLEAR ??
StFaults” 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.