Tiernan TDR60, Инструкция по установке и эксплуатации

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Troubleshooting
01-0868-401B 12/02 47
For example, assume that the video input source is interrupted or disconnected.
You issue the
FC
command to view the current faults. The remote unit displays:
Current Faults
--------------------------------------------------
DC Input Signal Loss
The query response shows:
■
The type of information queried —
current faults
■
A listing of all current faults. Individual faults do not include a time tag since
they were occurring at the time the query was issued.
To determine the time that the fault initially occurred, you must query the fault
history log. For example, the loss of input could have initially occurred several
hours prior to this query.
Fault History Log
The fault history log is more than just a list of current faults that have occurred
over a period of time. The TDR60 can detect a variety of other hardware and
operational faults that are not reported as current faults. These faults are stored in
the fault history log in addition to any current faults that have occurred.
All faults are saved in the fault history log until one of the following events occur:
■
The unit’s power is turned off or the unit is reset
■
The fault history log is cleared by selecting Faults>Clear from the front panel
or issuing the remote command
FH 0
.
The fault history log stores up to 20 occurrences of each type of fault. After 20 occurrences of one
fault have been logged, the TDR60 stops logging that fault until the fault history log is cleared.
Therefore, you should periodically view and record any faults stored in the fault history log, then
clear the log to ensure that an accurate history of all faults is recorded.
Individual faults include a time tag. The time tag allows you to determine how
often a particular event or fault is occurring and to track the performance of
internal components. The TDR60 maintains an internal run- time clock, which is
used to time- tag faults and other events to help you monitor system performance
and diagnose problems.
Viewing Fault History Log on the Front Panel
To view the fault history log on the front panel, perform these steps.
1. From the main menu, select Faults.
2. The Fault menu displays. Select History.
NOTE
MPEG2 Receiver/Decoder
Input
Service Faults
→
Fault Menu
Current
History Clear