User's Manual
ISO 9001:2000 Cert. N°4500/1
Version 1.1 SDT_ARK6_User_Manual_ENG_vATSC Page 110 of 206
Alarm
Description and limitations
Troubleshooting
Mode(2)
RF mask (1)
[DVB-T] FE MER Low
Front-End MER goes under the alarm
threshold.
Check input signal and cable
T
X
[DVB-T] FE Signal
Quality Low
Front-End Signal Quality goes under the
alarm threshold.
Check input signal and cable
T
X
[DVB-T] MEAS Not
Locked
Logical AND between Meas TS lock and
Meas demodulator ready (SyncStat equals to
6).
Check the configuration
Check if the configuration has been loaded
T
0
[DVB-T] MEAS Pre
Viterbi BER High
Measure Pre Viterbi BER goes over the alarm
threshold.
Check the configuration
Check if the configuration has been loaded
T
0
[DVB-T] MEAS SNR
Low
Measure SNR goes under the alarm
threshold.
Check the configuration
Check if the configuration has been loaded
T
0
[DVB-T] MEAS MER
Low
Measure MER goes under the alarm
threshold.
Check the configuration
Check if the configuration has been loaded
T
0
[DVB-T] MEAS Signal
Quality Low
Measure Signal Quality goes under the alarm
threshold.
Check the configuration
Check if the configuration has been loaded
T
0
[DVB-T] Holdover
An alarm that is raised when the Holdover
function is enabled and the set timeout period
elapsed prior to regain the lock of the
frequency reference.
Check input frequency reference source.
T
X
[ITU] No video input
Selected input not locked.
Check input cable
Check input statistics
ITU
X