TANDBERG SM6610, Справочное руководство

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Preventive Maintenance and Fault-finding
Reference Guide: SM6610, SM6615, SM6620 and SM6625 Satellite Modulators Page 8-9
ST.RE.E10152.2
8.8 VT100 Terminal Emulation Program Problems
Ensure that the terminal emulation program is set up correctly. See
Section 3.1.2, Setting up the VT100 Terminal Emulation Program for the
complete procedure.
8.9 Alarm and Failure Reporting
8.9.1 Introduction
This section describes the alarm and fail conditions which cause the
alarm/fail relays to be actuated and which are recorded in the Alarm log.
They are dependent on the cards fitted and, in some cases, the mode of
operation of the Modulator. The alarms reported are dependent upon the
Alarm Mask settings. See Section 3.5.2 for further details.
This section defines the alarm-reporting scheme in the SM6600 range of
Satellite Modulators.
8.9.2 Alarm Severity Levels
Each alarm is assigned one of six severity levels. These levels provide an
indication of how it is perceived that the capability of the Modulator has
been affected. Those severity levels which represent service affecting
conditions ordered from most severe to least severe are critical, major,
minor and warning. The six severity levels are defined below.
1. The cleared severity level indicates the clearing of one or more
previously reported alarms. This alarm clears all alarms for the
Modulator that have the same alarm type, probable cause and specific
problems (if given).
2. The indeterminate severity level indicates that the severity level
cannot be determined.
3. The warning severity level indicates the detection of a potential or
impending service affecting fault, before any significant effects have
been felt. Action should be taken to further diagnose (if necessary) and
correct the problem in order to prevent it from becoming a more
serious service affecting fault.
4. The minor severity level indicates the existence of a non-service
affecting fault condition and that corrective action should be taken in
order to prevent a more serious (for example, service affecting) fault.
Such a severity can be reported, for example, when the detected alarm
condition is not currently degrading the capacity of the Modulator.
5. The major severity level indicates that a service affecting condition
has developed and an urgent corrective action is required. Such a
severity can be reported, for example, when there is a severe
degradation in the capability of the Modulator and its full capability
must be restored.
6. The critical severity level indicates that a service affecting condition
has occurred and an immediate corrective action is required. Such a
severity can be reported, for example, when the Modulator becomes
totally out of service and its capability must be restored.