User's Manual
ISO 9001:2000 Cert. N°4500/1
Version 1.1 SDT_ARK6_User_Manual_ENG_vATSC Page 115 of 206
Alarm
Description and limitations
Troubleshooting
Mode(2)
RF mask (1)
[ATSC] MEAS SNR
Low
Measure SNR goes under the alarm
threshold.
Check the configuration
ATSC
0
[ATSC] FE
Demodulator Not
Locked
ATSC demodulator of the Front-End board
not locked.
Check input signal
ATSC
X
[ATSC] FE SNR Low
Front-End SNR goes under the alarm
threshold.
Check input signal
ATSC
X
[ATSC] No TVCT
Input TVCT table not present.
Check input signal
ATSC
X
Notes to the table:
(1) 0/1 stands for disabled/enabled and is fixed, X stands for not fixed.
(2) C stands for Common alarm. T2/T/ATSC/ITU/ISDB-T specifies the mode the alarm belongs to. Alarms are divided in two different classes: common
alarms and mode-specific alarms.
Common alarms are those which are HW dependant or are dependent on how the operating system has been designed. Common alarms are
shared by all the operational modes.
Mode-specific alarms are those which depend on the implemented functionalities and standards. Mode-specific alarms can be easily recognized
thanks to the addition of the mode prefix enclosed in squared brackets.