Ericsson TT1222 Guia do Utilizador Página 183

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Alarm Categories and Conditions
D.1 Alarm Conditions
This chapter lists the alarm conditions detected by the unit. It also lists a description
for the alarm, a possible remedy, and the default state of the alarm in the alarm
configuration menu.
D.2 Input Stage Alarms
D.2.1 QPSK Input Alarms
The QPSK input alarms relate to alarms received from the DVB-S QPSK
demodulator, or the lack of communication with this component.
Table D.1: QPSK Alarm Categories and Conditions
Alarm
Category
Contents
Alarm Description Remedy Default
Tuner fail
This alarm is set if the
communication with the
tuner is lost.
A
No signal
Alarm only if the RF
level has been zero for
more than 2 consecutive
times
Check signal
source
A
No lock
Demod will not be
deemed to be locked
until full lock status has
occurred for 3
consecutive polls
Check input
settings
(frequency, FEC,
symbol rate etc.)
A
QPSK Input:
BER
exceeded
BER TOO HIGH is
declared when BER
estimate exceeds #
defined value for FEC
rate.
The input signal
strength or
quality is not
adequate.
W
Note: These alarms are only available when the QPSK input module is fitted in the
receiver.
EN/LZT 790 0002/2 R1A
D-3
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